diff options
Diffstat (limited to 'lib/kunit/assert.c')
-rw-r--r-- | lib/kunit/assert.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/lib/kunit/assert.c b/lib/kunit/assert.c new file mode 100644 index 000000000..d00d6d181 --- /dev/null +++ b/lib/kunit/assert.c @@ -0,0 +1,206 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Assertion and expectation serialization API. + * + * Copyright (C) 2019, Google LLC. + * Author: Brendan Higgins <brendanhiggins@google.com> + */ +#include <kunit/assert.h> +#include <kunit/test.h> + +#include "string-stream.h" + +void kunit_assert_prologue(const struct kunit_loc *loc, + enum kunit_assert_type type, + struct string_stream *stream) +{ + const char *expect_or_assert = NULL; + + switch (type) { + case KUNIT_EXPECTATION: + expect_or_assert = "EXPECTATION"; + break; + case KUNIT_ASSERTION: + expect_or_assert = "ASSERTION"; + break; + } + + string_stream_add(stream, "%s FAILED at %s:%d\n", + expect_or_assert, loc->file, loc->line); +} +EXPORT_SYMBOL_GPL(kunit_assert_prologue); + +static void kunit_assert_print_msg(const struct va_format *message, + struct string_stream *stream) +{ + if (message->fmt) + string_stream_add(stream, "\n%pV", message); +} + +void kunit_fail_assert_format(const struct kunit_assert *assert, + const struct va_format *message, + struct string_stream *stream) +{ + string_stream_add(stream, "%pV", message); +} +EXPORT_SYMBOL_GPL(kunit_fail_assert_format); + +void kunit_unary_assert_format(const struct kunit_assert *assert, + const struct va_format *message, + struct string_stream *stream) +{ + struct kunit_unary_assert *unary_assert; + + unary_assert = container_of(assert, struct kunit_unary_assert, assert); + + if (unary_assert->expected_true) + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s to be true, but is false\n", + unary_assert->condition); + else + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s to be false, but is true\n", + unary_assert->condition); + kunit_assert_print_msg(message, stream); +} +EXPORT_SYMBOL_GPL(kunit_unary_assert_format); + +void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert, + const struct va_format *message, + struct string_stream *stream) +{ + struct kunit_ptr_not_err_assert *ptr_assert; + + ptr_assert = container_of(assert, struct kunit_ptr_not_err_assert, + assert); + + if (!ptr_assert->value) { + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s is not null, but is\n", + ptr_assert->text); + } else if (IS_ERR(ptr_assert->value)) { + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s is not error, but is: %ld\n", + ptr_assert->text, + PTR_ERR(ptr_assert->value)); + } + kunit_assert_print_msg(message, stream); +} +EXPORT_SYMBOL_GPL(kunit_ptr_not_err_assert_format); + +/* Checks if `text` is a literal representing `value`, e.g. "5" and 5 */ +static bool is_literal(struct kunit *test, const char *text, long long value, + gfp_t gfp) +{ + char *buffer; + int len; + bool ret; + + len = snprintf(NULL, 0, "%lld", value); + if (strlen(text) != len) + return false; + + buffer = kunit_kmalloc(test, len+1, gfp); + if (!buffer) + return false; + + snprintf(buffer, len+1, "%lld", value); + ret = strncmp(buffer, text, len) == 0; + + kunit_kfree(test, buffer); + return ret; +} + +void kunit_binary_assert_format(const struct kunit_assert *assert, + const struct va_format *message, + struct string_stream *stream) +{ + struct kunit_binary_assert *binary_assert; + + binary_assert = container_of(assert, struct kunit_binary_assert, + assert); + + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", + binary_assert->text->left_text, + binary_assert->text->operation, + binary_assert->text->right_text); + if (!is_literal(stream->test, binary_assert->text->left_text, + binary_assert->left_value, stream->gfp)) + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld\n", + binary_assert->text->left_text, + binary_assert->left_value); + if (!is_literal(stream->test, binary_assert->text->right_text, + binary_assert->right_value, stream->gfp)) + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld", + binary_assert->text->right_text, + binary_assert->right_value); + kunit_assert_print_msg(message, stream); +} +EXPORT_SYMBOL_GPL(kunit_binary_assert_format); + +void kunit_binary_ptr_assert_format(const struct kunit_assert *assert, + const struct va_format *message, + struct string_stream *stream) +{ + struct kunit_binary_ptr_assert *binary_assert; + + binary_assert = container_of(assert, struct kunit_binary_ptr_assert, + assert); + + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", + binary_assert->text->left_text, + binary_assert->text->operation, + binary_assert->text->right_text); + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %px\n", + binary_assert->text->left_text, + binary_assert->left_value); + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %px", + binary_assert->text->right_text, + binary_assert->right_value); + kunit_assert_print_msg(message, stream); +} +EXPORT_SYMBOL_GPL(kunit_binary_ptr_assert_format); + +/* Checks if KUNIT_EXPECT_STREQ() args were string literals. + * Note: `text` will have ""s where as `value` will not. + */ +static bool is_str_literal(const char *text, const char *value) +{ + int len; + + len = strlen(text); + if (len < 2) + return false; + if (text[0] != '\"' || text[len - 1] != '\"') + return false; + + return strncmp(text + 1, value, len - 2) == 0; +} + +void kunit_binary_str_assert_format(const struct kunit_assert *assert, + const struct va_format *message, + struct string_stream *stream) +{ + struct kunit_binary_str_assert *binary_assert; + + binary_assert = container_of(assert, struct kunit_binary_str_assert, + assert); + + string_stream_add(stream, + KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n", + binary_assert->text->left_text, + binary_assert->text->operation, + binary_assert->text->right_text); + if (!is_str_literal(binary_assert->text->left_text, binary_assert->left_value)) + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"\n", + binary_assert->text->left_text, + binary_assert->left_value); + if (!is_str_literal(binary_assert->text->right_text, binary_assert->right_value)) + string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"", + binary_assert->text->right_text, + binary_assert->right_value); + kunit_assert_print_msg(message, stream); +} +EXPORT_SYMBOL_GPL(kunit_binary_str_assert_format); |