/* 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_assert - Data for printing a failed assertion or expectation.
* @type: the type (either an expectation or an assertion) of this kunit_assert.
* @line: the source code line number that the expectation/assertion is at.
* @file: the file path of the source file that the expectation/assertion is in.
* @message: an optional message to provide additional context.
* @format: a function which formats the data in this kunit_assert to a string.
*
* Represents a failed expectation/assertion. Contains all the data necessary to
* format a string to a user reporting the failure.
*/
struct kunit_assert {
enum kunit_assert_type type;
int line;
const char *file;
struct va_format message;
void (*format)(const struct kunit_assert *assert,
struct string_stream *stream);
};
/**
* KUNIT_INIT_VA_FMT_NULL - Default initializer for struct va_format.
*
* Used inside a struct initialization block to initialize struct va_format to
* default values where fmt and va are null.
*/
#define KUNIT_INIT_VA_FMT_NULL { .fmt = NULL, .va = NULL }
/**
* KUNIT_INIT_ASSERT_STRUCT() - Initializer for a &struct kunit_assert.
* @assert_type: The type (assertion or expectation) of this kunit_assert.
* @fmt: The formatting function which builds a string out of this kunit_assert.
*
* The base initializer for a &struct kunit_assert.
*/
#define KUNIT_INIT_ASSERT_STRUCT(assert_type, fmt) { \
.type = assert_type, \
.file = __FILE__, \
.line = __LINE__, \
.message = KUNIT_INIT_VA_FMT_NULL, \
.format = fmt \
}
void kunit_base_assert_format(const struct kunit_assert *assert,
struct string_stream *stream);
void kunit_assert_print_msg(const struct kunit_assert *assert,
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_ASSERT_FAILURE that always fails.
*/
struct kunit_fail_assert {
struct kunit_assert assert;
};
void kunit_fail_assert_format(const struct kunit_assert *assert,
struct string_stream *stream);
/**
* KUNIT_INIT_FAIL_ASSERT_STRUCT() - Initializer for &struct kunit_fail_assert.
* @type: The type (assertion or expectation) of this kunit_assert.
*
* Initializes a &struct kunit_fail_assert. Intended to be used in
* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
*/
#define KUNIT_INIT_FAIL_ASSERT_STRUCT(type) { \
.assert = KUNIT_INIT_ASSERT_STRUCT(type, \
kunit_fail_assert_format) \
}
/**
* 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,
struct string_stream *stream);
/**
* KUNIT_INIT_UNARY_ASSERT_STRUCT() - Initializes &struct kunit_unary_assert.
* @type: The type (assertion or expectation) of this kunit_assert.
* @cond: A string representation of the expression asserted true or false.
* @expect_true: True if of type KUNIT_{EXPECT|ASSERT}_TRUE, false otherwise.
*
* Initializes a &struct kunit_unary_assert. Intended to be used in
* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
*/
#define KUNIT_INIT_UNARY_ASSERT_STRUCT(type, cond, expect_true) { \
.assert = KUNIT_INIT_ASSERT_STRUCT(type, \
kunit_unary_assert_format), \
.condition = cond, \
.expected_true = expect_true \
}
/**
* 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,
struct string_stream *stream);
/**
* KUNIT_INIT_PTR_NOT_ERR_ASSERT_STRUCT() - Initializes a
* &struct kunit_ptr_not_err_assert.
* @type: The type (assertion or expectation) of this kunit_assert.
* @txt: A string representation of the expression passed to the expectation.
* @val: The actual evaluated pointer value of the expression.
*
* Initializes a &struct kunit_ptr_not_err_assert. Intended to be used in
* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
*/
#define KUNIT_INIT_PTR_NOT_ERR_STRUCT(type, txt, val) { \
.assert = KUNIT_INIT_ASSERT_STRUCT(type, \
kunit_ptr_not_err_assert_format), \
.text = txt, \
.value = val \
}
/**
* 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.
* @operation: A string representation of the comparison operator (e.g. "==").
* @left_text: A string representation of the expression in the left slot.
* @left_value: The actual evaluated value of the expression in the left slot.
* @right_text: A string representation of the expression in the right 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 char *operation;
const char *left_text;
long long left_value;
const char *right_text;
long long right_value;
};
void kunit_binary_assert_format(const struct kunit_assert *assert,
struct string_stream *stream);
/**
* KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a
* &struct kunit_binary_assert.
* @type: The type (assertion or expectation) of this kunit_assert.
* @op_str: A string representation of the comparison operator (e.g. "==").
* @left_str: A string representation of the expression in the left slot.
* @left_val: The actual evaluated value of the expression in the left slot.
* @right_str: A string representation of the expression in the right slot.
* @right_val: The actual evaluated value of the expression in the right slot.
*
* Initializes a &struct kunit_binary_assert. Intended to be used in
* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
*/
#define KUNIT_INIT_BINARY_ASSERT_STRUCT(type, \
op_str, \
left_str, \
left_val, \
right_str, \
right_val) { \
.assert = KUNIT_INIT_ASSERT_STRUCT(type, \
kunit_binary_assert_format), \
.operation = op_str, \
.left_text = left_str, \
.left_value = left_val, \
.right_text = right_str, \
.right_value = right_val \
}
/**
* 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.
* @operation: A string representation of the comparison operator (e.g. "==").
* @left_text: A string representation of the expression in the left slot.
* @left_value: The actual evaluated value of the expression in the left slot.
* @right_text: A string representation of the expression in the right 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 char *operation;
const char *left_text;
const void *left_value;
const char *right_text;
const void *right_value;
};
void kunit_binary_ptr_assert_format(const struct kunit_assert *assert,
struct string_stream *stream);
/**
* KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT() - Initializes a
* &struct kunit_binary_ptr_assert.
* @type: The type (assertion or expectation) of this kunit_assert.
* @op_str: A string representation of the comparison operator (e.g. "==").
* @left_str: A string representation of the expression in the left slot.
* @left_val: The actual evaluated value of the expression in the left slot.
* @right_str: A string representation of the expression in the right slot.
* @right_val: The actual evaluated value of the expression in the right slot.
*
* Initializes a &struct kunit_binary_ptr_assert. Intended to be used in
* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
*/
#define KUNIT_INIT_BINARY_PTR_ASSERT_STRUCT(type, \
op_str, \
left_str, \
left_val, \
right_str, \
right_val) { \
.assert = KUNIT_INIT_ASSERT_STRUCT(type, \
kunit_binary_ptr_assert_format), \
.operation = op_str, \
.left_text = left_str, \
.left_value = left_val, \
.right_text = right_str, \
.right_value = right_val \
}
/**
* 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.
* @operation: A string representation of the comparison operator (e.g. "==").
* @left_text: A string representation of the expression in the left slot.
* @left_value: The actual evaluated value of the expression in the left slot.
* @right_text: A string representation of the expression in the right 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 char *operation;
const char *left_text;
const char *left_value;
const char *right_text;
const char *right_value;
};
void kunit_binary_str_assert_format(const struct kunit_assert *assert,
struct string_stream *stream);
/**
* KUNIT_INIT_BINARY_STR_ASSERT_STRUCT() - Initializes a
* &struct kunit_binary_str_assert.
* @type: The type (assertion or expectation) of this kunit_assert.
* @op_str: A string representation of the comparison operator (e.g. "==").
* @left_str: A string representation of the expression in the left slot.
* @left_val: The actual evaluated value of the expression in the left slot.
* @right_str: A string representation of the expression in the right slot.
* @right_val: The actual evaluated value of the expression in the right slot.
*
* Initializes a &struct kunit_binary_str_assert. Intended to be used in
* KUNIT_EXPECT_* and KUNIT_ASSERT_* macros.
*/
#define KUNIT_INIT_BINARY_STR_ASSERT_STRUCT(type, \
op_str, \
left_str, \
left_val, \
right_str, \
right_val) { \
.assert = KUNIT_INIT_ASSERT_STRUCT(type, \
kunit_binary_str_assert_format), \
.operation = op_str, \
.left_text = left_str, \
.left_value = left_val, \
.right_text = right_str, \
.right_value = right_val \
}
#endif /* _KUNIT_ASSERT_H */
