Adding upstream version 1:2.3.21+dfsg1.upstream/1%2.3.21+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 2528 insertions, 0 deletions

diff --git a/src/lib/test-event-log.c b/src/lib/test-event-log.c
new file mode 100644
index 0000000..286a981
--- /dev/null
+++ b/src/lib/test-event-log.c
@@ -0,0 +1,2528 @@
+/* Copyright (c) 2018 Dovecot authors, see the included COPYING file */
+
+#include "test-lib.h"
+#include "ioloop.h"
+#include "str.h"
+#include "failures-private.h"
+
+#include <unistd.h>
+
+enum test_log_event_type {
+	TYPE_END,
+	TYPE_PREFIX_APPEND,
+	TYPE_PREFIX_REPLACE,
+	TYPE_PREFIX_APPEND_CB,
+	TYPE_PREFIX_REPLACE_CB,
+	TYPE_MESSAGE_AMEND,
+	TYPE_SKIP,
+};
+
+enum test_log_event_flag {
+	FLAG_BASE_EVENT = BIT(0),
+	FLAG_DROP_PREFIXES_1 = BIT(1),
+	FLAG_DROP_PREFIXES_2 = BIT(2),
+	FLAG_DROP_PREFIXES_4 = BIT(3),
+};
+
+enum test_log_flag {
+	FLAG_NO_SEND = BIT(0),
+};
+
+struct test_log_event {
+	enum test_log_event_type type;
+	const char *str;
+	enum test_log_event_flag flags;
+};
+
+struct test_log {
+	const struct test_log_event *prefixes;
+	const char *global_log_prefix;
+	const char *base_send_prefix;
+	const char *base_str_prefix;
+	const char *result;
+	const char *result_str_out;
+	enum test_log_flag flags;
+};
+
+static char *test_output = NULL;
+
+static void ATTR_FORMAT(2, 0)
+info_handler(const struct failure_context *ctx,
+	     const char *format, va_list args)
+{
+	size_t prefix_len;
+
+	i_assert(ctx->type == LOG_TYPE_INFO);
+
+	i_free(test_output);
+	T_BEGIN {
+		string_t *str = failure_handler.v->format(ctx, &prefix_len,
+							  format, args);
+		test_output = i_strdup(str_c(str));
+	} T_END;
+}
+
+static void ATTR_FORMAT(2, 0)
+error_handler(const struct failure_context *ctx,
+	     const char *format, va_list args)
+{
+	size_t prefix_len;
+
+	i_assert(ctx->type == LOG_TYPE_WARNING ||
+		 ctx->type == LOG_TYPE_ERROR);
+
+	i_free(test_output);
+	T_BEGIN {
+		string_t *str = failure_handler.v->format(ctx, &prefix_len,
+							  format, args);
+		test_output = i_strdup(str_c(str));
+	} T_END;
+}
+
+static const char *
+test_event_log_prefix_cb(char *prefix)
+{
+	return t_strdup_printf("callback(%s)", prefix);
+}
+
+static const char *
+test_event_log_message_cb(char *prefix,
+			  enum log_type log_type ATTR_UNUSED,
+			  const char *message)
+{
+	return t_strdup_printf("[%s%s]", prefix, message);
+}
+
+static void test_event_log_message(void)
+{
+	struct test_log tests[] = {
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global1.",
+			.result = "global1.Info: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global2.",
+			.result = "global2.Info: appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended1,appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				  "appended1,appended2.appended3.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: appended3#TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND_CB, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: callback(appended1-)TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced2-)Info: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced1.)Info: appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2-Info: TEXT",
+		},
+		/* Tests involving event_set_log_message_callback() */
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-" , 0},
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-[amended2-TEXT]]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: appended1-[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: "
+				"appended1-[amended1-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: [amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2,Info: [amended2-TEXT]",
+		},
+		/* Tests with params->base_str_out != NULL */
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global1.",
+			.result = "global1.Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: appended2.TEXT",
+			.result_str_out = "appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: appended2.TEXT",
+			.result_str_out = "appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: appended2.TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global2.",
+			.result = "global2.Info: appended1,TEXT",
+			.result_str_out = "appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global2.",
+			.result = "global2.Info: appended1,TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended1,appended2.TEXT",
+			.result_str_out = "appended1,appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended1,appended2.TEXT",
+			.result_str_out = "appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended1,appended2.TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				  "appended1,appended2.appended3.TEXT",
+			.result_str_out = "appended1,appended2.appended3.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				  "appended1,appended2.appended3.TEXT",
+			.result_str_out = "appended2.appended3.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				  "appended1,appended2.appended3.TEXT",
+			.result_str_out = "appended3.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				  "appended1,appended2.appended3.TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: appended3#TEXT",
+			.result_str_out = "appended3#TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: appended3#TEXT",
+			.result_str_out = "appended3#TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: appended3#TEXT",
+			.result_str_out = "appended3#TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2.Info: appended3#TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND_CB, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: callback(appended1-)TEXT",
+			.result_str_out = "callback(appended1-)TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND_CB, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: callback(appended1-)TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced2-)Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced2-)Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced2-)Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced2-)Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced1.)Info: appended1,TEXT",
+			.result_str_out = "appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced1.)Info: appended1,TEXT",
+			.result_str_out = "appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "callback(replaced1.)Info: appended1,TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2-Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2-Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2-Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-" , 0},
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-TEXT]",
+			.result_str_out = "[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-" ,
+				  FLAG_BASE_EVENT},
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-TEXT]",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-[amended2-TEXT]]",
+			.result_str_out = "[amended1-[amended2-TEXT]]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-[amended2-TEXT]]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-[amended2-TEXT]]",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-TEXT]",
+			.result_str_out = "[amended1-appended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-TEXT]",
+			.result_str_out = "appended1-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-TEXT]",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: appended1-[amended1-TEXT]",
+			.result_str_out = "appended1-[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: appended1-[amended1-TEXT]",
+			.result_str_out = "[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: appended1-[amended1-TEXT]",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: "
+				"appended1-[amended1-appended2-TEXT]",
+			.result_str_out = "appended1-[amended1-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: "
+				"appended1-[amended1-appended2-TEXT]",
+			.result_str_out = "[amended1-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: "
+				"appended1-[amended1-appended2-TEXT]",
+			.result_str_out = "appended2-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: "
+				"appended1-[amended1-appended2-TEXT]",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "[amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "appended1-[amended2-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "[amended2-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "appended2-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: [amended1-TEXT]",
+			.result_str_out = "[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: [amended1-TEXT]",
+			.result_str_out = "[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced1,Info: [amended1-TEXT]",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "TEXT",
+		},
+		/* Tests involving params->no_send */
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = NULL,
+			.result_str_out = "appended3.TEXT",
+			.flags = FLAG_NO_SEND,
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.result = NULL,
+			.result_str_out = "[amended2-appended2-TEXT]",
+			.flags = FLAG_NO_SEND,
+		},
+		/* Tests with params->base_*_prefix assigned */
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global1.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global1.Info: PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2.Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2.Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2.Info: PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: appended2.TEXT",
+			.result_str_out = "appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: PREFIX: appended2.TEXT",
+			.result_str_out = "STR_PREFIX: appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: appended2.PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global2.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global2.Info: PREFIX: appended1,TEXT",
+			.result_str_out = "STR_PREFIX: appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global2.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global2.Info: appended1,PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: PREFIX: "
+				"appended1,appended2.TEXT",
+			.result_str_out = "STR_PREFIX: "
+				"appended1,appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: appended1,PREFIX: "
+				"appended2.TEXT",
+			.result_str_out = "STR_PREFIX: appended2.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: appended1,appended2."
+				"PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: PREFIX: "
+				"appended1,appended2.appended3.TEXT",
+			.result_str_out = "STR_PREFIX: "
+				"appended1,appended2.appended3.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: appended1,PREFIX: "
+				"appended2.appended3.TEXT",
+			.result_str_out = "STR_PREFIX: "
+				"appended2.appended3.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: appended1,appended2.PREFIX: "
+				"appended3.TEXT",
+			.result_str_out = "STR_PREFIX: appended3.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: "
+				"appended1,appended2.appended3.PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2.Info: appended3#TEXT",
+			.result_str_out = "appended3#TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2.Info: appended3#TEXT",
+			.result_str_out = "appended3#TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2.Info: PREFIX: appended3#TEXT",
+			.result_str_out = "STR_PREFIX: appended3#TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2.Info: appended3#PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: appended5-TEXT",
+			.result_str_out = "appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended5-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: PREFIX: appended5-TEXT",
+			.result_str_out = "STR_PREFIX: appended5-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3#", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced4;", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced4;Info: appended5-PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND_CB, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: PREFIX: "
+				"callback(appended1-)TEXT",
+			.result_str_out = "STR_PREFIX: "
+				"callback(appended1-)TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND_CB, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global3.Info: callback(appended1-)PREFIX: "
+				"TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "callback(replaced2-)Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "callback(replaced2-)Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "callback(replaced2-)Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE_CB, "replaced2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "callback(replaced2-)Info: PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "callback(replaced1.)Info: appended1,TEXT",
+			.result_str_out = "appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "callback(replaced1.)Info: PREFIX: "
+				"appended1,TEXT",
+			.result_str_out = "STR_PREFIX: appended1,TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "callback(replaced1.)Info: appended1,PREFIX: "
+				"TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2-Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2-Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE_CB, "replaced1.", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2-Info: PREFIX: TEXT",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-" , 0},
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: PREFIX: [amended1-TEXT]",
+			.result_str_out = "STR_PREFIX: [amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-" ,
+				  FLAG_BASE_EVENT},
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-PREFIX: TEXT]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: PREFIX: "
+				"[amended1-[amended2-TEXT]]",
+			.result_str_out = "STR_PREFIX: "
+				"[amended1-[amended2-TEXT]]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-PREFIX: "
+				"[amended2-TEXT]]",
+			.result_str_out = "STR_PREFIX: [amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-[amended2-PREFIX: "
+				"TEXT]]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: PREFIX: "
+				"[amended1-appended1-TEXT]",
+			.result_str_out = "STR_PREFIX: "
+				"[amended1-appended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-PREFIX: "
+				"appended1-TEXT]",
+			.result_str_out = "STR_PREFIX: appended1-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-appended1-PREFIX: "
+				"TEXT]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: PREFIX: "
+				"appended1-[amended1-TEXT]",
+			.result_str_out = "STR_PREFIX: "
+				"appended1-[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: appended1-PREFIX: "
+				"[amended1-TEXT]",
+			.result_str_out = "STR_PREFIX: [amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: appended1-[amended1-PREFIX: "
+				"TEXT]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: PREFIX: "
+				"appended1-[amended1-appended2-TEXT]",
+			.result_str_out = "STR_PREFIX: "
+				"appended1-[amended1-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: appended1-PREFIX: "
+				"[amended1-appended2-TEXT]",
+			.result_str_out = "STR_PREFIX: "
+				"[amended1-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: appended1-[amended1-PREFIX: "
+				"appended2-TEXT]",
+			.result_str_out = "STR_PREFIX: appended2-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: "
+				"appended1-[amended1-appended2-PREFIX: TEXT]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: PREFIX: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "STR_PREFIX: [amended1-appended1-"
+				"[amended2-appended2-TEXT]]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-PREFIX: appended1-"
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "STR_PREFIX: "
+				"appended1-[amended2-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-appended1-PREFIX: "
+				"[amended2-appended2-TEXT]]",
+			.result_str_out = "STR_PREFIX: "
+				"[amended2-appended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_APPEND, "appended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-PREFIX: appended2-TEXT]]",
+			.result_str_out = "STR_PREFIX: appended2-TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended1-", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global4.",
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "global4.Info: [amended1-appended1-"
+				"[amended2-appended2-PREFIX: TEXT]]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: [amended1-TEXT]",
+			.result_str_out = "[amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: PREFIX: [amended1-TEXT]",
+			.result_str_out = "STR_PREFIX: [amended1-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced1,Info: [amended1-PREFIX: TEXT]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-",
+				  FLAG_BASE_EVENT },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2,Info: [amended2-TEXT]",
+			.result_str_out = "[amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,",
+				  FLAG_BASE_EVENT },
+				{ TYPE_MESSAGE_AMEND, "amended2-", 0 },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2,Info: PREFIX: [amended2-TEXT]",
+			.result_str_out = "STR_PREFIX: [amended2-TEXT]",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_REPLACE, "replaced1,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended1-", 0 },
+				{ TYPE_PREFIX_REPLACE, "replaced2,", 0 },
+				{ TYPE_MESSAGE_AMEND, "amended2-",
+				  FLAG_BASE_EVENT },
+				{ .type = TYPE_END }
+			},
+			.base_send_prefix = "PREFIX: ",
+			.base_str_prefix = "STR_PREFIX: ",
+			.result = "replaced2,Info: [amended2-PREFIX: TEXT]",
+			.result_str_out = "STR_PREFIX: TEXT",
+		},
+		/* Tests in which parent log prefixes are dropped by an event
+		   lower in the hierarchy. */
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.", 0 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				"appended1,appended2.appended3."
+				"appended4.appended5.TEXT",
+			.result_str_out = "appended1,appended2.appended3."
+				"appended4.appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				"appended1,appended2.appended3."
+				"appended5.TEXT",
+			.result_str_out = "appended1,appended2.appended3."
+				"appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.", 0 },
+				{ TYPE_SKIP, NULL, FLAG_DROP_PREFIXES_1 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				"appended1,appended2.appended3."
+				"appended4.TEXT",
+			.result_str_out = "appended1,appended2.appended3."
+				"appended4.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  FLAG_DROP_PREFIXES_2 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				"appended1,appended2.appended5.TEXT",
+			.result_str_out = "appended1,appended2.appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  (FLAG_DROP_PREFIXES_1 |
+				   FLAG_DROP_PREFIXES_2) },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended1,appended5.TEXT",
+			.result_str_out = "appended1,appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  FLAG_DROP_PREFIXES_4 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended5.TEXT",
+			.result_str_out = "appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  (FLAG_DROP_PREFIXES_1 |
+				   FLAG_DROP_PREFIXES_2 |
+				   FLAG_DROP_PREFIXES_4) },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended5.TEXT",
+			.result_str_out = "appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.", 0 },
+				{ TYPE_SKIP, NULL, (FLAG_DROP_PREFIXES_1 |
+						    FLAG_DROP_PREFIXES_2 |
+						    FLAG_DROP_PREFIXES_4) },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: TEXT",
+			.result_str_out = "TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				"appended2.appended3.appended5.TEXT",
+			.result_str_out = "appended2.appended3.appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,",
+				  FLAG_DROP_PREFIXES_1 },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ TYPE_PREFIX_APPEND, "appended3.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ TYPE_PREFIX_APPEND, "appended4.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended5.TEXT",
+			.result_str_out = "appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ .type = TYPE_SKIP },
+				{ TYPE_PREFIX_APPEND, "appended2.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ .type = TYPE_SKIP },
+				{ TYPE_PREFIX_APPEND, "appended3.", 0 },
+				{ .type = TYPE_SKIP },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ .type = TYPE_SKIP },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ .type = TYPE_SKIP },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: "
+				"appended2.appended3.appended5.TEXT",
+			.result_str_out = "appended2.appended3.appended5.TEXT",
+		},
+		{
+			.prefixes = (const struct test_log_event []) {
+				{ TYPE_PREFIX_APPEND, "appended1,", 0 },
+				{ TYPE_PREFIX_APPEND, "appended2.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended3.",
+				  FLAG_DROP_PREFIXES_1 },
+				{ TYPE_PREFIX_APPEND, "appended4.", 0 },
+				{ TYPE_PREFIX_APPEND, "appended5.",
+				  (FLAG_DROP_PREFIXES_1 |
+				   FLAG_DROP_PREFIXES_2) },
+				{ .type = TYPE_END }
+			},
+			.global_log_prefix = "global3.",
+			.result = "global3.Info: appended5.TEXT",
+			.result_str_out = "appended5.TEXT",
+		},
+	};
+
+	test_begin("event log message");
+
+	failure_callback_t *orig_fatal, *orig_error, *orig_info, *orig_debug;
+	i_get_failure_handlers(&orig_fatal, &orig_error, &orig_info, &orig_debug);
+	i_set_info_handler(info_handler);
+	for (unsigned int i = 0; i < N_ELEMENTS(tests); i++) T_BEGIN {
+		const struct test_log *test = &tests[i];
+		struct event_log_params params = {
+			.log_type = LOG_TYPE_INFO,
+			.base_send_prefix = test->base_send_prefix,
+			.base_str_prefix = test->base_str_prefix,
+			.no_send = ((test->flags & FLAG_NO_SEND) != 0),
+		};
+
+		i_free(test_output);
+		if (test->global_log_prefix != NULL)
+			i_set_failure_prefix("%s", test->global_log_prefix);
+		else
+			i_set_failure_prefix("UNEXPECTED GLOBAL PREFIX");
+
+		struct event *event, *parent;
+		event = parent = event_create(NULL);
+		for (unsigned int j = 0; test->prefixes[j].type != TYPE_END; j++) {
+			unsigned int drop_prefixes = 0;
+
+			if (event == NULL) {
+				struct event *child = event_create(parent);
+				event_unref(&parent);
+				event = parent = child;
+			}
+			if ((test->prefixes[j].flags & FLAG_BASE_EVENT) != 0) {
+				i_assert(params.base_event == NULL);
+				params.base_event = event;
+			}
+			if ((test->prefixes[j].flags &
+			     FLAG_DROP_PREFIXES_1) != 0)
+				drop_prefixes += 1;
+			if ((test->prefixes[j].flags &
+			     FLAG_DROP_PREFIXES_2) != 0)
+				drop_prefixes += 2;
+			if ((test->prefixes[j].flags &
+			     FLAG_DROP_PREFIXES_4) != 0)
+				drop_prefixes += 4;
+			event_drop_parent_log_prefixes(event, drop_prefixes);
+
+			switch (test->prefixes[j].type) {
+			case TYPE_END:
+				i_unreached();
+			case TYPE_PREFIX_APPEND:
+				event_set_append_log_prefix(event, test->prefixes[j].str);
+				break;
+			case TYPE_PREFIX_REPLACE:
+				event_replace_log_prefix(event, test->prefixes[j].str);
+				break;
+			case TYPE_PREFIX_APPEND_CB:
+				event_set_log_prefix_callback(event, FALSE,
+							      test_event_log_prefix_cb,
+							      (char*)test->prefixes[j].str);
+				break;
+			case TYPE_PREFIX_REPLACE_CB:
+				event_set_log_prefix_callback(event, TRUE,
+							      test_event_log_prefix_cb,
+							      (char*)test->prefixes[j].str);
+				break;
+			case TYPE_MESSAGE_AMEND:
+				event_set_log_message_callback(event,
+							       test_event_log_message_cb,
+							       (char*)test->prefixes[j].str);
+				break;
+			case TYPE_SKIP:
+				break;
+			}
+			event = NULL;
+		}
+		event = parent;
+
+		if (test->result_str_out != NULL) {
+			/* Use small value so buffer size grows. This way the
+			   unit test fails if anyone attempts to add data-stack
+			   frame to event_log(). */
+			params.base_str_out = t_str_new(1);
+		}
+		event_log(event, &params, "TEXT");
+
+		test_assert_strcmp(test->result, test_output);
+		if (test->result_str_out != NULL) {
+			test_assert_strcmp(test->result_str_out,
+					   str_c(params.base_str_out));
+		}
+		event_unref(&event);
+	} T_END;
+	i_set_info_handler(orig_info);
+	i_unset_failure_prefix();
+	i_free(test_output);
+	test_end();
+}
+
+static void test_event_duration()
+{
+	uintmax_t duration;
+	test_begin("event duration");
+	struct event *e = event_create(NULL);
+	usleep(10);
+	e_info(e, "Submit event");
+	event_get_last_duration(e, &duration);
+	test_assert(duration > 0);
+	event_unref(&e);
+	test_end();
+}
+
+static void test_event_log_level(void)
+{
+	test_begin("event log level");
+	failure_callback_t *orig_fatal, *orig_error, *orig_info, *orig_debug;
+	i_get_failure_handlers(&orig_fatal, &orig_error, &orig_info, &orig_debug);
+	i_set_info_handler(info_handler);
+	i_set_error_handler(error_handler);
+
+	struct event *event = event_create(NULL);
+	event_set_min_log_level(event, LOG_TYPE_WARNING);
+	errno = EACCES;
+	e_info(event, "Info event");
+	test_assert(test_output == NULL);
+	e_warning(event, "Warning event");
+	test_assert_strcmp(test_output, "Warning: Warning event");
+	event_unref(&event);
+	i_set_info_handler(orig_info);
+	i_set_error_handler(orig_error);
+	i_free(test_output);
+	test_assert(errno == EACCES);
+	test_end();
+}
+
+void test_event_log(void)
+{
+	test_event_log_message();
+	test_event_duration();
+	test_event_log_level();
+}