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7b4481cbe7
There is no need to use a test-managed alloc in is_literal(). The function frees the temporary buffer before returning. This removes the only use of the test and gfp members of struct string_stream outside of the string_stream implementation. Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com> Reviewed-by: David Gow <davidgow@google.com> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
272 lines
8.1 KiB
C
272 lines
8.1 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Assertion and expectation serialization API.
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*
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* Copyright (C) 2019, Google LLC.
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* Author: Brendan Higgins <brendanhiggins@google.com>
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*/
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#include <kunit/assert.h>
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#include <kunit/test.h>
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#include "string-stream.h"
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void kunit_assert_prologue(const struct kunit_loc *loc,
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enum kunit_assert_type type,
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struct string_stream *stream)
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{
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const char *expect_or_assert = NULL;
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switch (type) {
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case KUNIT_EXPECTATION:
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expect_or_assert = "EXPECTATION";
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break;
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case KUNIT_ASSERTION:
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expect_or_assert = "ASSERTION";
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break;
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}
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string_stream_add(stream, "%s FAILED at %s:%d\n",
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expect_or_assert, loc->file, loc->line);
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}
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EXPORT_SYMBOL_GPL(kunit_assert_prologue);
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static void kunit_assert_print_msg(const struct va_format *message,
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struct string_stream *stream)
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{
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if (message->fmt)
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string_stream_add(stream, "\n%pV", message);
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}
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void kunit_fail_assert_format(const struct kunit_assert *assert,
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const struct va_format *message,
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struct string_stream *stream)
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{
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string_stream_add(stream, "%pV", message);
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}
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EXPORT_SYMBOL_GPL(kunit_fail_assert_format);
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void kunit_unary_assert_format(const struct kunit_assert *assert,
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const struct va_format *message,
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struct string_stream *stream)
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{
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struct kunit_unary_assert *unary_assert;
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unary_assert = container_of(assert, struct kunit_unary_assert, assert);
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if (unary_assert->expected_true)
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s to be true, but is false\n",
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unary_assert->condition);
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else
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s to be false, but is true\n",
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unary_assert->condition);
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kunit_assert_print_msg(message, stream);
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}
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EXPORT_SYMBOL_GPL(kunit_unary_assert_format);
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void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
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const struct va_format *message,
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struct string_stream *stream)
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{
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struct kunit_ptr_not_err_assert *ptr_assert;
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ptr_assert = container_of(assert, struct kunit_ptr_not_err_assert,
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assert);
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if (!ptr_assert->value) {
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s is not null, but is\n",
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ptr_assert->text);
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} else if (IS_ERR(ptr_assert->value)) {
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s is not error, but is: %ld\n",
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ptr_assert->text,
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PTR_ERR(ptr_assert->value));
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}
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kunit_assert_print_msg(message, stream);
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}
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EXPORT_SYMBOL_GPL(kunit_ptr_not_err_assert_format);
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/* Checks if `text` is a literal representing `value`, e.g. "5" and 5 */
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static bool is_literal(const char *text, long long value)
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{
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char *buffer;
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int len;
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bool ret;
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len = snprintf(NULL, 0, "%lld", value);
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if (strlen(text) != len)
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return false;
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buffer = kmalloc(len+1, GFP_KERNEL);
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if (!buffer)
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return false;
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snprintf(buffer, len+1, "%lld", value);
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ret = strncmp(buffer, text, len) == 0;
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kfree(buffer);
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return ret;
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}
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void kunit_binary_assert_format(const struct kunit_assert *assert,
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const struct va_format *message,
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struct string_stream *stream)
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{
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struct kunit_binary_assert *binary_assert;
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binary_assert = container_of(assert, struct kunit_binary_assert,
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assert);
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n",
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binary_assert->text->left_text,
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binary_assert->text->operation,
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binary_assert->text->right_text);
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if (!is_literal(binary_assert->text->left_text, binary_assert->left_value))
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld (0x%llx)\n",
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binary_assert->text->left_text,
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binary_assert->left_value,
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binary_assert->left_value);
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if (!is_literal(binary_assert->text->right_text, binary_assert->right_value))
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %lld (0x%llx)",
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binary_assert->text->right_text,
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binary_assert->right_value,
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binary_assert->right_value);
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kunit_assert_print_msg(message, stream);
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}
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EXPORT_SYMBOL_GPL(kunit_binary_assert_format);
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void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
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const struct va_format *message,
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struct string_stream *stream)
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{
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struct kunit_binary_ptr_assert *binary_assert;
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binary_assert = container_of(assert, struct kunit_binary_ptr_assert,
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assert);
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n",
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binary_assert->text->left_text,
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binary_assert->text->operation,
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binary_assert->text->right_text);
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %px\n",
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binary_assert->text->left_text,
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binary_assert->left_value);
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == %px",
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binary_assert->text->right_text,
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binary_assert->right_value);
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kunit_assert_print_msg(message, stream);
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}
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EXPORT_SYMBOL_GPL(kunit_binary_ptr_assert_format);
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/* Checks if KUNIT_EXPECT_STREQ() args were string literals.
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* Note: `text` will have ""s where as `value` will not.
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*/
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static bool is_str_literal(const char *text, const char *value)
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{
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int len;
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len = strlen(text);
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if (len < 2)
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return false;
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if (text[0] != '\"' || text[len - 1] != '\"')
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return false;
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return strncmp(text + 1, value, len - 2) == 0;
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}
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void kunit_binary_str_assert_format(const struct kunit_assert *assert,
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const struct va_format *message,
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struct string_stream *stream)
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{
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struct kunit_binary_str_assert *binary_assert;
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binary_assert = container_of(assert, struct kunit_binary_str_assert,
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assert);
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n",
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binary_assert->text->left_text,
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binary_assert->text->operation,
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binary_assert->text->right_text);
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if (!is_str_literal(binary_assert->text->left_text, binary_assert->left_value))
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"\n",
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binary_assert->text->left_text,
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binary_assert->left_value);
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if (!is_str_literal(binary_assert->text->right_text, binary_assert->right_value))
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s == \"%s\"",
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binary_assert->text->right_text,
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binary_assert->right_value);
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kunit_assert_print_msg(message, stream);
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}
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EXPORT_SYMBOL_GPL(kunit_binary_str_assert_format);
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/* Adds a hexdump of a buffer to a string_stream comparing it with
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* a second buffer. The different bytes are marked with <>.
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*/
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static void kunit_assert_hexdump(struct string_stream *stream,
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const void *buf,
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const void *compared_buf,
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const size_t len)
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{
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size_t i;
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const u8 *buf1 = buf;
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const u8 *buf2 = compared_buf;
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT);
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for (i = 0; i < len; ++i) {
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if (!(i % 16) && i)
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string_stream_add(stream, "\n" KUNIT_SUBSUBTEST_INDENT);
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if (buf1[i] != buf2[i])
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string_stream_add(stream, "<%02x>", buf1[i]);
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else
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string_stream_add(stream, " %02x ", buf1[i]);
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}
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}
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void kunit_mem_assert_format(const struct kunit_assert *assert,
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const struct va_format *message,
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struct string_stream *stream)
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{
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struct kunit_mem_assert *mem_assert;
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mem_assert = container_of(assert, struct kunit_mem_assert,
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assert);
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if (!mem_assert->left_value) {
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s is not null, but is\n",
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mem_assert->text->left_text);
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} else if (!mem_assert->right_value) {
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s is not null, but is\n",
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mem_assert->text->right_text);
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} else {
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string_stream_add(stream,
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KUNIT_SUBTEST_INDENT "Expected %s %s %s, but\n",
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mem_assert->text->left_text,
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mem_assert->text->operation,
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mem_assert->text->right_text);
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s ==\n",
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mem_assert->text->left_text);
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kunit_assert_hexdump(stream, mem_assert->left_value,
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mem_assert->right_value, mem_assert->size);
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string_stream_add(stream, "\n");
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string_stream_add(stream, KUNIT_SUBSUBTEST_INDENT "%s ==\n",
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mem_assert->text->right_text);
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kunit_assert_hexdump(stream, mem_assert->right_value,
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mem_assert->left_value, mem_assert->size);
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kunit_assert_print_msg(message, stream);
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}
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}
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EXPORT_SYMBOL_GPL(kunit_mem_assert_format);
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