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/* SPDX-License-Identifier: GPL-2.0 */ /* * Assertion and expectation serialization API. * * Copyright (C) 2019, Google LLC. * Author: Brendan Higgins <brendanhiggins@google.com> */ #ifndef _KUNIT_ASSERT_H #define _KUNIT_ASSERT_H #include <linux/err.h> #include <linux/printk.h> struct kunit; struct string_stream; /** * enum kunit_assert_type - Type of expectation/assertion. * @KUNIT_ASSERTION: Used to denote that a kunit_assert represents an assertion. * @KUNIT_EXPECTATION: Denotes that a kunit_assert represents an expectation. * * Used in conjunction with a &struct kunit_assert to denote whether it * represents an expectation or an assertion. */ enum kunit_assert_type { KUNIT_ASSERTION, KUNIT_EXPECTATION, }; /** * struct kunit_loc - Identifies the source location of a line of code. * @line: the line number in the file. * @file: the file name. */ struct kunit_loc { int line; const char *file; }; #define KUNIT_CURRENT_LOC { .file = __FILE__, .line = __LINE__ } /** * struct kunit_assert - Data for printing a failed assertion or expectation. * * Represents a failed expectation/assertion. Contains all the data necessary to * format a string to a user reporting the failure. */ struct kunit_assert {}; typedef void (*assert_format_t)(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); void kunit_assert_prologue(const struct kunit_loc *loc, enum kunit_assert_type type, struct string_stream *stream); /** * struct kunit_fail_assert - Represents a plain fail expectation/assertion. * @assert: The parent of this type. * * Represents a simple KUNIT_FAIL/KUNIT_FAIL_AND_ABORT that always fails. */ struct kunit_fail_assert { struct kunit_assert assert; }; void kunit_fail_assert_format(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); /** * struct kunit_unary_assert - Represents a KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE} * @assert: The parent of this type. * @condition: A string representation of a conditional expression. * @expected_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise. * * Represents a simple expectation or assertion that simply asserts something is * true or false. In other words, represents the expectations: * KUNIT_{EXPECT|ASSERT}_{TRUE|FALSE} */ struct kunit_unary_assert { struct kunit_assert assert; const char *condition; bool expected_true; }; void kunit_unary_assert_format(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); /** * struct kunit_ptr_not_err_assert - An expectation/assertion that a pointer is * not NULL and not a -errno. * @assert: The parent of this type. * @text: A string representation of the expression passed to the expectation. * @value: The actual evaluated pointer value of the expression. * * Represents an expectation/assertion that a pointer is not null and is does * not contain a -errno. (See IS_ERR_OR_NULL().) */ struct kunit_ptr_not_err_assert { struct kunit_assert assert; const char *text; const void *value; }; void kunit_ptr_not_err_assert_format(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); /** * struct kunit_binary_assert_text - holds strings for &struct * kunit_binary_assert and friends to try and make the structs smaller. * @operation: A string representation of the comparison operator (e.g. "=="). * @left_text: A string representation of the left expression (e.g. "2+2"). * @right_text: A string representation of the right expression (e.g. "2+2"). */ struct kunit_binary_assert_text { const char *operation; const char *left_text; const char *right_text; }; /** * struct kunit_binary_assert - An expectation/assertion that compares two * non-pointer values (for example, KUNIT_EXPECT_EQ(test, 1 + 1, 2)). * @assert: The parent of this type. * @text: Holds the textual representations of the operands and op (e.g. "=="). * @left_value: The actual evaluated value of the expression in the left slot. * @right_value: The actual evaluated value of the expression in the right slot. * * Represents an expectation/assertion that compares two non-pointer values. For * example, to expect that 1 + 1 == 2, you can use the expectation * KUNIT_EXPECT_EQ(test, 1 + 1, 2); */ struct kunit_binary_assert { struct kunit_assert assert; const struct kunit_binary_assert_text *text; long long left_value; long long right_value; }; void kunit_binary_assert_format(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); /** * struct kunit_binary_ptr_assert - An expectation/assertion that compares two * pointer values (for example, KUNIT_EXPECT_PTR_EQ(test, foo, bar)). * @assert: The parent of this type. * @text: Holds the textual representations of the operands and op (e.g. "=="). * @left_value: The actual evaluated value of the expression in the left slot. * @right_value: The actual evaluated value of the expression in the right slot. * * Represents an expectation/assertion that compares two pointer values. For * example, to expect that foo and bar point to the same thing, you can use the * expectation KUNIT_EXPECT_PTR_EQ(test, foo, bar); */ struct kunit_binary_ptr_assert { struct kunit_assert assert; const struct kunit_binary_assert_text *text; const void *left_value; const void *right_value; }; void kunit_binary_ptr_assert_format(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); /** * struct kunit_binary_str_assert - An expectation/assertion that compares two * string values (for example, KUNIT_EXPECT_STREQ(test, foo, "bar")). * @assert: The parent of this type. * @text: Holds the textual representations of the operands and comparator. * @left_value: The actual evaluated value of the expression in the left slot. * @right_value: The actual evaluated value of the expression in the right slot. * * Represents an expectation/assertion that compares two string values. For * example, to expect that the string in foo is equal to "bar", you can use the * expectation KUNIT_EXPECT_STREQ(test, foo, "bar"); */ struct kunit_binary_str_assert { struct kunit_assert assert; const struct kunit_binary_assert_text *text; const char *left_value; const char *right_value; }; void kunit_binary_str_assert_format(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); /** * struct kunit_mem_assert - An expectation/assertion that compares two * memory blocks. * @assert: The parent of this type. * @text: Holds the textual representations of the operands and comparator. * @left_value: The actual evaluated value of the expression in the left slot. * @right_value: The actual evaluated value of the expression in the right slot. * @size: Size of the memory block analysed in bytes. * * Represents an expectation/assertion that compares two memory blocks. For * example, to expect that the first three bytes of foo is equal to the * first three bytes of bar, you can use the expectation * KUNIT_EXPECT_MEMEQ(test, foo, bar, 3); */ struct kunit_mem_assert { struct kunit_assert assert; const struct kunit_binary_assert_text *text; const void *left_value; const void *right_value; const size_t size; }; void kunit_mem_assert_format(const struct kunit_assert *assert, const struct va_format *message, struct string_stream *stream); #if IS_ENABLED(CONFIG_KUNIT) void kunit_assert_print_msg(const struct va_format *message, struct string_stream *stream); bool is_literal(const char *text, long long value); bool is_str_literal(const char *text, const char *value); void kunit_assert_hexdump(struct string_stream *stream, const void *buf, const void *compared_buf, const size_t len); #endif #endif /* _KUNIT_ASSERT_H */