kunit: test: add assertion printing library
Add `struct kunit_assert` and friends which provide a structured way to capture data from an expectation or an assertion (introduced later in the series) so that it may be printed out in the event of a failure. Signed-off-by: Brendan Higgins <brendanhiggins@google.com> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Brendan Higgins
Shuah Khan
parent
d1fadef194
commit
6b229e593f
356
include/kunit/assert.h
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356
include/kunit/assert.h
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/* 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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#ifndef _KUNIT_ASSERT_H
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#define _KUNIT_ASSERT_H
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#include <kunit/string-stream.h>
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#include <linux/err.h>
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struct kunit;
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/**
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* enum kunit_assert_type - Type of expectation/assertion.
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* @KUNIT_ASSERTION: Used to denote that a kunit_assert represents an assertion.
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* @KUNIT_EXPECTATION: Denotes that a kunit_assert represents an expectation.
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*
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* Used in conjunction with a &struct kunit_assert to denote whether it
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* represents an expectation or an assertion.
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*/
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enum kunit_assert_type {
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KUNIT_ASSERTION,
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KUNIT_EXPECTATION,
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};
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/**
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* struct kunit_assert - Data for printing a failed assertion or expectation.
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* @test: the test case this expectation/assertion is associated with.
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* @type: the type (either an expectation or an assertion) of this kunit_assert.
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* @line: the source code line number that the expectation/assertion is at.
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* @file: the file path of the source file that the expectation/assertion is in.
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* @message: an optional message to provide additional context.
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* @format: a function which formats the data in this kunit_assert to a string.
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*
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* Represents a failed expectation/assertion. Contains all the data necessary to
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* format a string to a user reporting the failure.
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*/
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struct kunit_assert {
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struct kunit *test;
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enum kunit_assert_type type;
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int line;
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const char *file;
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struct va_format message;
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void (*format)(const struct kunit_assert *assert,
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struct string_stream *stream);
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};
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/**
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* KUNIT_INIT_VA_FMT_NULL - Default initializer for struct va_format.
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*
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* Used inside a struct initialization block to initialize struct va_format to
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* default values where fmt and va are null.
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*/
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#define KUNIT_INIT_VA_FMT_NULL { .fmt = NULL, .va = NULL }
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/**
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* KUNIT_INIT_ASSERT_STRUCT() - Initializer for a &struct kunit_assert.
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* @kunit: The test case that this expectation/assertion is associated with.
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* @assert_type: The type (assertion or expectation) of this kunit_assert.
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* @fmt: The formatting function which builds a string out of this kunit_assert.
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*
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* The base initializer for a &struct kunit_assert.
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*/
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#define KUNIT_INIT_ASSERT_STRUCT(kunit, assert_type, fmt) { \
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.test = kunit, \
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.type = assert_type, \
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.file = __FILE__, \
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.line = __LINE__, \
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.message = KUNIT_INIT_VA_FMT_NULL, \
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.format = fmt \
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}
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void kunit_base_assert_format(const struct kunit_assert *assert,
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struct string_stream *stream);
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void kunit_assert_print_msg(const struct kunit_assert *assert,
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struct string_stream *stream);
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/**
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* struct kunit_fail_assert - Represents a plain fail expectation/assertion.
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* @assert: The parent of this type.
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*
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* Represents a simple KUNIT_FAIL/KUNIT_ASSERT_FAILURE that always fails.
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*/
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struct kunit_fail_assert {
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struct kunit_assert assert;
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};
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void kunit_fail_assert_format(const struct kunit_assert *assert,
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struct string_stream *stream);
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/**
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* KUNIT_INIT_FAIL_ASSERT_STRUCT() - Initializer for &struct kunit_fail_assert.
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* @test: The test case that this expectation/assertion is associated with.
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* @type: The type (assertion or expectation) of this kunit_assert.
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*
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* Initializes a &struct kunit_fail_assert. Intended to be used in
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* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
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*/
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#define KUNIT_INIT_FAIL_ASSERT_STRUCT(test, type) { \
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.assert = KUNIT_INIT_ASSERT_STRUCT(test, \
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type, \
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kunit_fail_assert_format) \
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}
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/**
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* struct kunit_unary_assert - Represents a KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE}
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* @assert: The parent of this type.
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* @condition: A string representation of a conditional expression.
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* @expected_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise.
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*
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* Represents a simple expectation or assertion that simply asserts something is
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* true or false. In other words, represents the expectations:
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* KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE}
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*/
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struct kunit_unary_assert {
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struct kunit_assert assert;
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const char *condition;
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bool expected_true;
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};
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void kunit_unary_assert_format(const struct kunit_assert *assert,
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struct string_stream *stream);
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/**
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* KUNIT_INIT_UNARY_ASSERT_STRUCT() - Initializes &struct kunit_unary_assert.
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* @test: The test case that this expectation/assertion is associated with.
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* @type: The type (assertion or expectation) of this kunit_assert.
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* @cond: A string representation of the expression asserted true or false.
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* @expect_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise.
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*
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* Initializes a &struct kunit_unary_assert. Intended to be used in
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* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
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*/
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#define KUNIT_INIT_UNARY_ASSERT_STRUCT(test, type, cond, expect_true) { \
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.assert = KUNIT_INIT_ASSERT_STRUCT(test, \
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type, \
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kunit_unary_assert_format), \
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.condition = cond, \
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.expected_true = expect_true \
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}
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/**
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* struct kunit_ptr_not_err_assert - An expectation/assertion that a pointer is
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* not NULL and not a -errno.
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* @assert: The parent of this type.
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* @text: A string representation of the expression passed to the expectation.
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* @value: The actual evaluated pointer value of the expression.
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*
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* Represents an expectation/assertion that a pointer is not null and is does
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* not contain a -errno. (See IS_ERR_OR_NULL().)
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*/
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struct kunit_ptr_not_err_assert {
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struct kunit_assert assert;
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const char *text;
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const void *value;
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};
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void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
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struct string_stream *stream);
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/**
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* KUNIT_INIT_PTR_NOT_ERR_ASSERT_STRUCT() - Initializes a
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* &struct kunit_ptr_not_err_assert.
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* @test: The test case that this expectation/assertion is associated with.
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* @type: The type (assertion or expectation) of this kunit_assert.
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* @txt: A string representation of the expression passed to the expectation.
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* @val: The actual evaluated pointer value of the expression.
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*
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* Initializes a &struct kunit_ptr_not_err_assert. Intended to be used in
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* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
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*/
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#define KUNIT_INIT_PTR_NOT_ERR_STRUCT(test, type, txt, val) { \
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.assert = KUNIT_INIT_ASSERT_STRUCT(test, \
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type, \
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kunit_ptr_not_err_assert_format), \
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.text = txt, \
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.value = val \
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}
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/**
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* struct kunit_binary_assert - An expectation/assertion that compares two
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* non-pointer values (for example, KUNIT_EXPECT_EQ(test, 1 + 1, 2)).
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* @assert: The parent of this type.
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* @operation: A string representation of the comparison operator (e.g. "==").
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* @left_text: A string representation of the expression in the left slot.
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* @left_value: The actual evaluated value of the expression in the left slot.
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* @right_text: A string representation of the expression in the right slot.
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* @right_value: The actual evaluated value of the expression in the right slot.
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*
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* Represents an expectation/assertion that compares two non-pointer values. For
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* example, to expect that 1 + 1 == 2, you can use the expectation
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* KUNIT_EXPECT_EQ(test, 1 + 1, 2);
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*/
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struct kunit_binary_assert {
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struct kunit_assert assert;
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const char *operation;
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const char *left_text;
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long long left_value;
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const char *right_text;
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long long right_value;
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};
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void kunit_binary_assert_format(const struct kunit_assert *assert,
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struct string_stream *stream);
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/**
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* KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a
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* &struct kunit_binary_assert.
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* @test: The test case that this expectation/assertion is associated with.
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* @type: The type (assertion or expectation) of this kunit_assert.
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* @op_str: A string representation of the comparison operator (e.g. "==").
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* @left_str: A string representation of the expression in the left slot.
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* @left_val: The actual evaluated value of the expression in the left slot.
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* @right_str: A string representation of the expression in the right slot.
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* @right_val: The actual evaluated value of the expression in the right slot.
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*
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* Initializes a &struct kunit_binary_assert. Intended to be used in
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* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
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*/
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#define KUNIT_INIT_BINARY_ASSERT_STRUCT(test, \
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type, \
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op_str, \
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left_str, \
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left_val, \
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right_str, \
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right_val) { \
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.assert = KUNIT_INIT_ASSERT_STRUCT(test, \
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type, \
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kunit_binary_assert_format), \
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.operation = op_str, \
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.left_text = left_str, \
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.left_value = left_val, \
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.right_text = right_str, \
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.right_value = right_val \
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}
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/**
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* struct kunit_binary_ptr_assert - An expectation/assertion that compares two
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* pointer values (for example, KUNIT_EXPECT_PTR_EQ(test, foo, bar)).
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* @assert: The parent of this type.
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* @operation: A string representation of the comparison operator (e.g. "==").
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* @left_text: A string representation of the expression in the left slot.
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* @left_value: The actual evaluated value of the expression in the left slot.
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* @right_text: A string representation of the expression in the right slot.
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* @right_value: The actual evaluated value of the expression in the right slot.
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*
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* Represents an expectation/assertion that compares two pointer values. For
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* example, to expect that foo and bar point to the same thing, you can use the
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* expectation KUNIT_EXPECT_PTR_EQ(test, foo, bar);
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*/
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struct kunit_binary_ptr_assert {
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struct kunit_assert assert;
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const char *operation;
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const char *left_text;
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const void *left_value;
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const char *right_text;
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const void *right_value;
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};
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void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
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struct string_stream *stream);
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/**
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* KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT() - Initializes a
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* &struct kunit_binary_ptr_assert.
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* @test: The test case that this expectation/assertion is associated with.
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* @type: The type (assertion or expectation) of this kunit_assert.
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* @op_str: A string representation of the comparison operator (e.g. "==").
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* @left_str: A string representation of the expression in the left slot.
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* @left_val: The actual evaluated value of the expression in the left slot.
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* @right_str: A string representation of the expression in the right slot.
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* @right_val: The actual evaluated value of the expression in the right slot.
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*
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* Initializes a &struct kunit_binary_ptr_assert. Intended to be used in
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* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
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*/
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#define KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT(test, \
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type, \
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op_str, \
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left_str, \
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left_val, \
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right_str, \
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right_val) { \
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.assert = KUNIT_INIT_ASSERT_STRUCT(test, \
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type, \
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kunit_binary_ptr_assert_format), \
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.operation = op_str, \
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.left_text = left_str, \
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.left_value = left_val, \
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.right_text = right_str, \
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.right_value = right_val \
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}
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/**
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* struct kunit_binary_str_assert - An expectation/assertion that compares two
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* string values (for example, KUNIT_EXPECT_STREQ(test, foo, "bar")).
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* @assert: The parent of this type.
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* @operation: A string representation of the comparison operator (e.g. "==").
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* @left_text: A string representation of the expression in the left slot.
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* @left_value: The actual evaluated value of the expression in the left slot.
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* @right_text: A string representation of the expression in the right slot.
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* @right_value: The actual evaluated value of the expression in the right slot.
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*
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* Represents an expectation/assertion that compares two string values. For
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* example, to expect that the string in foo is equal to "bar", you can use the
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* expectation KUNIT_EXPECT_STREQ(test, foo, "bar");
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*/
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struct kunit_binary_str_assert {
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struct kunit_assert assert;
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const char *operation;
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const char *left_text;
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const char *left_value;
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const char *right_text;
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const char *right_value;
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};
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void kunit_binary_str_assert_format(const struct kunit_assert *assert,
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struct string_stream *stream);
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/**
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* KUNIT_INIT_BINARY_STR_ASSERT_STRUCT() - Initializes a
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* &struct kunit_binary_str_assert.
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* @test: The test case that this expectation/assertion is associated with.
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* @type: The type (assertion or expectation) of this kunit_assert.
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* @op_str: A string representation of the comparison operator (e.g. "==").
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* @left_str: A string representation of the expression in the left slot.
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* @left_val: The actual evaluated value of the expression in the left slot.
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* @right_str: A string representation of the expression in the right slot.
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* @right_val: The actual evaluated value of the expression in the right slot.
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*
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* Initializes a &struct kunit_binary_str_assert. Intended to be used in
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* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
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*/
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#define KUNIT_INIT_BINARY_STR_ASSERT_STRUCT(test, \
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type, \
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op_str, \
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left_str, \
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left_val, \
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right_str, \
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right_val) { \
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.assert = KUNIT_INIT_ASSERT_STRUCT(test, \
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type, \
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kunit_binary_str_assert_format), \
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.operation = op_str, \
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.left_text = left_str, \
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||||||
|
.left_value = left_val, \
|
||||||
|
.right_text = right_str, \
|
||||||
|
.right_value = right_val \
|
||||||
|
}
|
||||||
|
|
||||||
|
#endif /* _KUNIT_ASSERT_H */
|
||||||
@ -1,2 +1,3 @@
|
|||||||
obj-$(CONFIG_KUNIT) += test.o \
|
obj-$(CONFIG_KUNIT) += test.o \
|
||||||
string-stream.o
|
string-stream.o \
|
||||||
|
assert.o
|
||||||
|
|||||||
141
lib/kunit/assert.c
Normal file
141
lib/kunit/assert.c
Normal file
@ -0,0 +1,141 @@
|
|||||||
|
// 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>
|
||||||
|
|
||||||
|
void kunit_base_assert_format(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
const char *expect_or_assert = NULL;
|
||||||
|
|
||||||
|
switch (assert->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, assert->file, assert->line);
|
||||||
|
}
|
||||||
|
|
||||||
|
void kunit_assert_print_msg(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
if (assert->message.fmt)
|
||||||
|
string_stream_add(stream, "\n%pV", &assert->message);
|
||||||
|
}
|
||||||
|
|
||||||
|
void kunit_fail_assert_format(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
kunit_base_assert_format(assert, stream);
|
||||||
|
string_stream_add(stream, "%pV", &assert->message);
|
||||||
|
}
|
||||||
|
|
||||||
|
void kunit_unary_assert_format(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
struct kunit_unary_assert *unary_assert = container_of(
|
||||||
|
assert, struct kunit_unary_assert, assert);
|
||||||
|
|
||||||
|
kunit_base_assert_format(assert, stream);
|
||||||
|
if (unary_assert->expected_true)
|
||||||
|
string_stream_add(stream,
|
||||||
|
"\tExpected %s to be true, but is false\n",
|
||||||
|
unary_assert->condition);
|
||||||
|
else
|
||||||
|
string_stream_add(stream,
|
||||||
|
"\tExpected %s to be false, but is true\n",
|
||||||
|
unary_assert->condition);
|
||||||
|
kunit_assert_print_msg(assert, stream);
|
||||||
|
}
|
||||||
|
|
||||||
|
void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
struct kunit_ptr_not_err_assert *ptr_assert = container_of(
|
||||||
|
assert, struct kunit_ptr_not_err_assert, assert);
|
||||||
|
|
||||||
|
kunit_base_assert_format(assert, stream);
|
||||||
|
if (!ptr_assert->value) {
|
||||||
|
string_stream_add(stream,
|
||||||
|
"\tExpected %s is not null, but is\n",
|
||||||
|
ptr_assert->text);
|
||||||
|
} else if (IS_ERR(ptr_assert->value)) {
|
||||||
|
string_stream_add(stream,
|
||||||
|
"\tExpected %s is not error, but is: %ld\n",
|
||||||
|
ptr_assert->text,
|
||||||
|
PTR_ERR(ptr_assert->value));
|
||||||
|
}
|
||||||
|
kunit_assert_print_msg(assert, stream);
|
||||||
|
}
|
||||||
|
|
||||||
|
void kunit_binary_assert_format(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
struct kunit_binary_assert *binary_assert = container_of(
|
||||||
|
assert, struct kunit_binary_assert, assert);
|
||||||
|
|
||||||
|
kunit_base_assert_format(assert, stream);
|
||||||
|
string_stream_add(stream,
|
||||||
|
"\tExpected %s %s %s, but\n",
|
||||||
|
binary_assert->left_text,
|
||||||
|
binary_assert->operation,
|
||||||
|
binary_assert->right_text);
|
||||||
|
string_stream_add(stream, "\t\t%s == %lld\n",
|
||||||
|
binary_assert->left_text,
|
||||||
|
binary_assert->left_value);
|
||||||
|
string_stream_add(stream, "\t\t%s == %lld",
|
||||||
|
binary_assert->right_text,
|
||||||
|
binary_assert->right_value);
|
||||||
|
kunit_assert_print_msg(assert, stream);
|
||||||
|
}
|
||||||
|
|
||||||
|
void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
struct kunit_binary_ptr_assert *binary_assert = container_of(
|
||||||
|
assert, struct kunit_binary_ptr_assert, assert);
|
||||||
|
|
||||||
|
kunit_base_assert_format(assert, stream);
|
||||||
|
string_stream_add(stream,
|
||||||
|
"\tExpected %s %s %s, but\n",
|
||||||
|
binary_assert->left_text,
|
||||||
|
binary_assert->operation,
|
||||||
|
binary_assert->right_text);
|
||||||
|
string_stream_add(stream, "\t\t%s == %pK\n",
|
||||||
|
binary_assert->left_text,
|
||||||
|
binary_assert->left_value);
|
||||||
|
string_stream_add(stream, "\t\t%s == %pK",
|
||||||
|
binary_assert->right_text,
|
||||||
|
binary_assert->right_value);
|
||||||
|
kunit_assert_print_msg(assert, stream);
|
||||||
|
}
|
||||||
|
|
||||||
|
void kunit_binary_str_assert_format(const struct kunit_assert *assert,
|
||||||
|
struct string_stream *stream)
|
||||||
|
{
|
||||||
|
struct kunit_binary_str_assert *binary_assert = container_of(
|
||||||
|
assert, struct kunit_binary_str_assert, assert);
|
||||||
|
|
||||||
|
kunit_base_assert_format(assert, stream);
|
||||||
|
string_stream_add(stream,
|
||||||
|
"\tExpected %s %s %s, but\n",
|
||||||
|
binary_assert->left_text,
|
||||||
|
binary_assert->operation,
|
||||||
|
binary_assert->right_text);
|
||||||
|
string_stream_add(stream, "\t\t%s == %s\n",
|
||||||
|
binary_assert->left_text,
|
||||||
|
binary_assert->left_value);
|
||||||
|
string_stream_add(stream, "\t\t%s == %s",
|
||||||
|
binary_assert->right_text,
|
||||||
|
binary_assert->right_value);
|
||||||
|
kunit_assert_print_msg(assert, stream);
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user