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243 lines
8.3 KiB
243 lines
8.3 KiB
/* 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 <[email protected]> |
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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 <linux/err.h> |
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#include <linux/printk.h> |
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struct kunit; |
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struct string_stream; |
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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_loc - Identifies the source location of a line of code. |
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* @line: the line number in the file. |
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* @file: the file name. |
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*/ |
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struct kunit_loc { |
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int line; |
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const char *file; |
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}; |
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#define KUNIT_CURRENT_LOC { .file = __FILE__, .line = __LINE__ } |
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/** |
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* struct kunit_assert - Data for printing a failed assertion or expectation. |
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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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typedef void (*assert_format_t)(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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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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* 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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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 - 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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const struct va_format *message, |
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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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* @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(cond, expect_true) { \ |
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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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const struct va_format *message, |
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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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* @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(txt, val) { \ |
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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_text - holds strings for &struct |
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* kunit_binary_assert and friends to try and make the structs smaller. |
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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 left expression (e.g. "2+2"). |
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* @right_text: A string representation of the right expression (e.g. "2+2"). |
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*/ |
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struct kunit_binary_assert_text { |
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const char *operation; |
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const char *left_text; |
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const char *right_text; |
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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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* @text: Holds the textual representations of the operands and op (e.g. "=="). |
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* @left_value: The actual evaluated value of the expression in the left 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 struct kunit_binary_assert_text *text; |
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long long left_value; |
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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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const struct va_format *message, |
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struct string_stream *stream); |
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/** |
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* KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a binary assert like |
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* kunit_binary_assert, kunit_binary_ptr_assert, etc. |
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* |
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* @text_: Pointer to a kunit_binary_assert_text. |
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* @left_val: The actual evaluated value of the expression in the left 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 binary assert like kunit_binary_assert, |
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* kunit_binary_ptr_assert, etc. This relies on these structs having the same |
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* fields but with different types for left_val/right_val. |
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* This is ultimately used by binary assertion macros like KUNIT_EXPECT_EQ, etc. |
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*/ |
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#define KUNIT_INIT_BINARY_ASSERT_STRUCT(text_, \ |
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left_val, \ |
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right_val) { \ |
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.text = text_, \ |
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.left_value = left_val, \ |
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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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* @text: Holds the textual representations of the operands and op (e.g. "=="). |
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* @left_value: The actual evaluated value of the expression in the left 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 struct kunit_binary_assert_text *text; |
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const void *left_value; |
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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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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 - 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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* @text: Holds the textual representations of the operands and comparator. |
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* @left_value: The actual evaluated value of the expression in the left 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 struct kunit_binary_assert_text *text; |
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const char *left_value; |
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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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const struct va_format *message, |
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struct string_stream *stream); |
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#endif /* _KUNIT_ASSERT_H */
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