1 files changed, 52 insertions, 0 deletions
diff --git a/src/lib-mail/test-quoted-printable.c b/src/lib-mail/test-quoted-printable.c
new file mode 100644
index 0000000..3cce59e
--- /dev/null
+++ b/src/lib-mail/test-quoted-printable.c
@@ -0,0 +1,52 @@
+/* Copyright (c) 2007-2018 Dovecot authors, see the included COPYING file */
+
+#include "lib.h"
+#include "buffer.h"
+#include "str.h"
+#include "quoted-printable.h"
+#include "test-common.h"
+
+static void test_quoted_printable_q_decode(void)
+{
+	const char *data[] = {
+		"=0A=0D  ", "\n\r  ",
+		"__foo__bar__", "  foo  bar  ",
+		"foo=", "foo=",
+		"foo=A", "foo=A",
+		"foo=Ax", "foo=Ax",
+		"foo=Ax=xy", "foo=Ax=xy",
+		"=C3=9Cberm=C3=A4=C3=9Figer Gebrauch", "\xc3\x9c""berm\xc3\xa4\xc3\x9figer Gebrauch",
+		/* Lowercase formally illegal but allowed for robustness */
+		"=c3=9cberm=c3=a4=c3=9figer Gebrauch", "\xc3\x9c""berm\xc3\xa4\xc3\x9figer Gebrauch",
+		/* Unnecessarily encoded */
+		"=66=6f=6f=42=61=72", "fooBar",
+		/* Expected to be encoded but not */
+		"\xc3\x9c""berm=c3=a4\xc3\x9figer Gebrauch", "\xc3\x9c""berm\xc3\xa4\xc3\x9figer Gebrauch",
+		/* Decode control characters */
+		"=0C=07", "\x0C\x07",
+		"=DE=AD=BE=EF", "\xDE\xAD\xBE\xEF",
+		/* Non-Hex data */
+		"=FJ=X1", "=FJ=X1",
+	};
+	buffer_t *buf;
+	unsigned int i;
+
+	test_begin("quoted printable q decode");
+	buf = t_buffer_create(128);
+	for (i = 0; i < N_ELEMENTS(data); i += 2) {
+		quoted_printable_q_decode((const void *)data[i], strlen(data[i]),
+					  buf);
+		test_assert_strcmp_idx(data[i+1], str_c(buf), i/2);
+		buffer_set_used_size(buf, 0);
+	}
+	test_end();
+}
+
+int main(void)
+{
+	static void (*const test_functions[])(void) = {
+		test_quoted_printable_q_decode,
+		NULL
+	};
+	return test_run(test_functions);
+}