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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /include/kunit
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'include/kunit')
-rw-r--r--include/kunit/assert.h243
-rw-r--r--include/kunit/resource.h390
-rw-r--r--include/kunit/test-bug.h29
-rw-r--r--include/kunit/test.h1326
-rw-r--r--include/kunit/try-catch.h65
-rw-r--r--include/kunit/visibility.h33
6 files changed, 2086 insertions, 0 deletions
diff --git a/include/kunit/assert.h b/include/kunit/assert.h
new file mode 100644
index 000000000..ace3de8d1
--- /dev/null
+++ b/include/kunit/assert.h
@@ -0,0 +1,243 @@
+/* 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_ASSERT_FAILURE 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);
+
+/**
+ * KUNIT_INIT_UNARY_ASSERT_STRUCT() - Initializes &struct kunit_unary_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(cond, expect_true) { \
+ .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,
+ const struct va_format *message,
+ struct string_stream *stream);
+
+/**
+ * KUNIT_INIT_PTR_NOT_ERR_ASSERT_STRUCT() - Initializes a
+ * &struct kunit_ptr_not_err_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(txt, val) { \
+ .text = txt, \
+ .value = val \
+}
+
+/**
+ * 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);
+
+/**
+ * KUNIT_INIT_BINARY_ASSERT_STRUCT() - Initializes a binary assert like
+ * kunit_binary_assert, kunit_binary_ptr_assert, etc.
+ *
+ * @text_: Pointer to a kunit_binary_assert_text.
+ * @left_val: The actual evaluated value of the expression in the left slot.
+ * @right_val: The actual evaluated value of the expression in the right slot.
+ *
+ * Initializes a binary assert like kunit_binary_assert,
+ * kunit_binary_ptr_assert, etc. This relies on these structs having the same
+ * fields but with different types for left_val/right_val.
+ * This is ultimately used by binary assertion macros like KUNIT_EXPECT_EQ, etc.
+ */
+#define KUNIT_INIT_BINARY_ASSERT_STRUCT(text_, \
+ left_val, \
+ right_val) { \
+ .text = text_, \
+ .left_value = left_val, \
+ .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.
+ * @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);
+
+#endif /* _KUNIT_ASSERT_H */
diff --git a/include/kunit/resource.h b/include/kunit/resource.h
new file mode 100644
index 000000000..cf6fb8f2a
--- /dev/null
+++ b/include/kunit/resource.h
@@ -0,0 +1,390 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * KUnit resource API for test managed resources (allocations, etc.).
+ *
+ * Copyright (C) 2022, Google LLC.
+ * Author: Daniel Latypov <dlatypov@google.com>
+ */
+
+#ifndef _KUNIT_RESOURCE_H
+#define _KUNIT_RESOURCE_H
+
+#include <kunit/test.h>
+
+#include <linux/kref.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+
+struct kunit_resource;
+
+typedef int (*kunit_resource_init_t)(struct kunit_resource *, void *);
+typedef void (*kunit_resource_free_t)(struct kunit_resource *);
+
+/**
+ * struct kunit_resource - represents a *test managed resource*
+ * @data: for the user to store arbitrary data.
+ * @name: optional name
+ * @free: a user supplied function to free the resource.
+ *
+ * Represents a *test managed resource*, a resource which will automatically be
+ * cleaned up at the end of a test case. This cleanup is performed by the 'free'
+ * function. The struct kunit_resource itself is freed automatically with
+ * kfree() if it was allocated by KUnit (e.g., by kunit_alloc_resource()), but
+ * must be freed by the user otherwise.
+ *
+ * Resources are reference counted so if a resource is retrieved via
+ * kunit_alloc_and_get_resource() or kunit_find_resource(), we need
+ * to call kunit_put_resource() to reduce the resource reference count
+ * when finished with it. Note that kunit_alloc_resource() does not require a
+ * kunit_resource_put() because it does not retrieve the resource itself.
+ *
+ * Example:
+ *
+ * .. code-block:: c
+ *
+ * struct kunit_kmalloc_params {
+ * size_t size;
+ * gfp_t gfp;
+ * };
+ *
+ * static int kunit_kmalloc_init(struct kunit_resource *res, void *context)
+ * {
+ * struct kunit_kmalloc_params *params = context;
+ * res->data = kmalloc(params->size, params->gfp);
+ *
+ * if (!res->data)
+ * return -ENOMEM;
+ *
+ * return 0;
+ * }
+ *
+ * static void kunit_kmalloc_free(struct kunit_resource *res)
+ * {
+ * kfree(res->data);
+ * }
+ *
+ * void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp)
+ * {
+ * struct kunit_kmalloc_params params;
+ *
+ * params.size = size;
+ * params.gfp = gfp;
+ *
+ * return kunit_alloc_resource(test, kunit_kmalloc_init,
+ * kunit_kmalloc_free, &params);
+ * }
+ *
+ * Resources can also be named, with lookup/removal done on a name
+ * basis also. kunit_add_named_resource(), kunit_find_named_resource()
+ * and kunit_destroy_named_resource(). Resource names must be
+ * unique within the test instance.
+ */
+struct kunit_resource {
+ void *data;
+ const char *name;
+ kunit_resource_free_t free;
+
+ /* private: internal use only. */
+ struct kref refcount;
+ struct list_head node;
+ bool should_kfree;
+};
+
+/**
+ * kunit_get_resource() - Hold resource for use. Should not need to be used
+ * by most users as we automatically get resources
+ * retrieved by kunit_find_resource*().
+ * @res: resource
+ */
+static inline void kunit_get_resource(struct kunit_resource *res)
+{
+ kref_get(&res->refcount);
+}
+
+/*
+ * Called when refcount reaches zero via kunit_put_resource();
+ * should not be called directly.
+ */
+static inline void kunit_release_resource(struct kref *kref)
+{
+ struct kunit_resource *res = container_of(kref, struct kunit_resource,
+ refcount);
+
+ if (res->free)
+ res->free(res);
+
+ /* 'res' is valid here, as if should_kfree is set, res->free may not free
+ * 'res' itself, just res->data
+ */
+ if (res->should_kfree)
+ kfree(res);
+}
+
+/**
+ * kunit_put_resource() - When caller is done with retrieved resource,
+ * kunit_put_resource() should be called to drop
+ * reference count. The resource list maintains
+ * a reference count on resources, so if no users
+ * are utilizing a resource and it is removed from
+ * the resource list, it will be freed via the
+ * associated free function (if any). Only
+ * needs to be used if we alloc_and_get() or
+ * find() resource.
+ * @res: resource
+ */
+static inline void kunit_put_resource(struct kunit_resource *res)
+{
+ kref_put(&res->refcount, kunit_release_resource);
+}
+
+/**
+ * __kunit_add_resource() - Internal helper to add a resource.
+ *
+ * res->should_kfree is not initialised.
+ * @test: The test context object.
+ * @init: a user-supplied function to initialize the result (if needed). If
+ * none is supplied, the resource data value is simply set to @data.
+ * If an init function is supplied, @data is passed to it instead.
+ * @free: a user-supplied function to free the resource (if needed).
+ * @res: The resource.
+ * @data: value to pass to init function or set in resource data field.
+ */
+int __kunit_add_resource(struct kunit *test,
+ kunit_resource_init_t init,
+ kunit_resource_free_t free,
+ struct kunit_resource *res,
+ void *data);
+
+/**
+ * kunit_add_resource() - Add a *test managed resource*.
+ * @test: The test context object.
+ * @init: a user-supplied function to initialize the result (if needed). If
+ * none is supplied, the resource data value is simply set to @data.
+ * If an init function is supplied, @data is passed to it instead.
+ * @free: a user-supplied function to free the resource (if needed).
+ * @res: The resource.
+ * @data: value to pass to init function or set in resource data field.
+ */
+static inline int kunit_add_resource(struct kunit *test,
+ kunit_resource_init_t init,
+ kunit_resource_free_t free,
+ struct kunit_resource *res,
+ void *data)
+{
+ res->should_kfree = false;
+ return __kunit_add_resource(test, init, free, res, data);
+}
+
+static inline struct kunit_resource *
+kunit_find_named_resource(struct kunit *test, const char *name);
+
+/**
+ * kunit_add_named_resource() - Add a named *test managed resource*.
+ * @test: The test context object.
+ * @init: a user-supplied function to initialize the resource data, if needed.
+ * @free: a user-supplied function to free the resource data, if needed.
+ * @res: The resource.
+ * @name: name to be set for resource.
+ * @data: value to pass to init function or set in resource data field.
+ */
+static inline int kunit_add_named_resource(struct kunit *test,
+ kunit_resource_init_t init,
+ kunit_resource_free_t free,
+ struct kunit_resource *res,
+ const char *name,
+ void *data)
+{
+ struct kunit_resource *existing;
+
+ if (!name)
+ return -EINVAL;
+
+ existing = kunit_find_named_resource(test, name);
+ if (existing) {
+ kunit_put_resource(existing);
+ return -EEXIST;
+ }
+
+ res->name = name;
+ res->should_kfree = false;
+
+ return __kunit_add_resource(test, init, free, res, data);
+}
+
+/**
+ * kunit_alloc_and_get_resource() - Allocates and returns a *test managed resource*.
+ * @test: The test context object.
+ * @init: a user supplied function to initialize the resource.
+ * @free: a user supplied function to free the resource (if needed).
+ * @internal_gfp: gfp to use for internal allocations, if unsure, use GFP_KERNEL
+ * @context: for the user to pass in arbitrary data to the init function.
+ *
+ * Allocates a *test managed resource*, a resource which will automatically be
+ * cleaned up at the end of a test case. See &struct kunit_resource for an
+ * example.
+ *
+ * This is effectively identical to kunit_alloc_resource, but returns the
+ * struct kunit_resource pointer, not just the 'data' pointer. It therefore
+ * also increments the resource's refcount, so kunit_put_resource() should be
+ * called when you've finished with it.
+ *
+ * Note: KUnit needs to allocate memory for a kunit_resource object. You must
+ * specify an @internal_gfp that is compatible with the use context of your
+ * resource.
+ */
+static inline struct kunit_resource *
+kunit_alloc_and_get_resource(struct kunit *test,
+ kunit_resource_init_t init,
+ kunit_resource_free_t free,
+ gfp_t internal_gfp,
+ void *context)
+{
+ struct kunit_resource *res;
+ int ret;
+
+ res = kzalloc(sizeof(*res), internal_gfp);
+ if (!res)
+ return NULL;
+
+ res->should_kfree = true;
+
+ ret = __kunit_add_resource(test, init, free, res, context);
+ if (!ret) {
+ /*
+ * bump refcount for get; kunit_resource_put() should be called
+ * when done.
+ */
+ kunit_get_resource(res);
+ return res;
+ }
+ return NULL;
+}
+
+/**
+ * kunit_alloc_resource() - Allocates a *test managed resource*.
+ * @test: The test context object.
+ * @init: a user supplied function to initialize the resource.
+ * @free: a user supplied function to free the resource (if needed).
+ * @internal_gfp: gfp to use for internal allocations, if unsure, use GFP_KERNEL
+ * @context: for the user to pass in arbitrary data to the init function.
+ *
+ * Allocates a *test managed resource*, a resource which will automatically be
+ * cleaned up at the end of a test case. See &struct kunit_resource for an
+ * example.
+ *
+ * Note: KUnit needs to allocate memory for a kunit_resource object. You must
+ * specify an @internal_gfp that is compatible with the use context of your
+ * resource.
+ */
+static inline void *kunit_alloc_resource(struct kunit *test,
+ kunit_resource_init_t init,
+ kunit_resource_free_t free,
+ gfp_t internal_gfp,
+ void *context)
+{
+ struct kunit_resource *res;
+
+ res = kzalloc(sizeof(*res), internal_gfp);
+ if (!res)
+ return NULL;
+
+ res->should_kfree = true;
+ if (!__kunit_add_resource(test, init, free, res, context))
+ return res->data;
+
+ return NULL;
+}
+
+typedef bool (*kunit_resource_match_t)(struct kunit *test,
+ struct kunit_resource *res,
+ void *match_data);
+
+/**
+ * kunit_resource_name_match() - Match a resource with the same name.
+ * @test: Test case to which the resource belongs.
+ * @res: The resource.
+ * @match_name: The name to match against.
+ */
+static inline bool kunit_resource_name_match(struct kunit *test,
+ struct kunit_resource *res,
+ void *match_name)
+{
+ return res->name && strcmp(res->name, match_name) == 0;
+}
+
+/**
+ * kunit_find_resource() - Find a resource using match function/data.
+ * @test: Test case to which the resource belongs.
+ * @match: match function to be applied to resources/match data.
+ * @match_data: data to be used in matching.
+ */
+static inline struct kunit_resource *
+kunit_find_resource(struct kunit *test,
+ kunit_resource_match_t match,
+ void *match_data)
+{
+ struct kunit_resource *res, *found = NULL;
+ unsigned long flags;
+
+ spin_lock_irqsave(&test->lock, flags);
+
+ list_for_each_entry_reverse(res, &test->resources, node) {
+ if (match(test, res, (void *)match_data)) {
+ found = res;
+ kunit_get_resource(found);
+ break;
+ }
+ }
+
+ spin_unlock_irqrestore(&test->lock, flags);
+
+ return found;
+}
+
+/**
+ * kunit_find_named_resource() - Find a resource using match name.
+ * @test: Test case to which the resource belongs.
+ * @name: match name.
+ */
+static inline struct kunit_resource *
+kunit_find_named_resource(struct kunit *test,
+ const char *name)
+{
+ return kunit_find_resource(test, kunit_resource_name_match,
+ (void *)name);
+}
+
+/**
+ * kunit_destroy_resource() - Find a kunit_resource and destroy it.
+ * @test: Test case to which the resource belongs.
+ * @match: Match function. Returns whether a given resource matches @match_data.
+ * @match_data: Data passed into @match.
+ *
+ * RETURNS:
+ * 0 if kunit_resource is found and freed, -ENOENT if not found.
+ */
+int kunit_destroy_resource(struct kunit *test,
+ kunit_resource_match_t match,
+ void *match_data);
+
+static inline int kunit_destroy_named_resource(struct kunit *test,
+ const char *name)
+{
+ return kunit_destroy_resource(test, kunit_resource_name_match,
+ (void *)name);
+}
+
+/**
+ * kunit_remove_resource() - remove resource from resource list associated with
+ * test.
+ * @test: The test context object.
+ * @res: The resource to be removed.
+ *
+ * Note that the resource will not be immediately freed since it is likely
+ * the caller has a reference to it via alloc_and_get() or find();
+ * in this case a final call to kunit_put_resource() is required.
+ */
+void kunit_remove_resource(struct kunit *test, struct kunit_resource *res);
+
+#endif /* _KUNIT_RESOURCE_H */
diff --git a/include/kunit/test-bug.h b/include/kunit/test-bug.h
new file mode 100644
index 000000000..5fc58081d
--- /dev/null
+++ b/include/kunit/test-bug.h
@@ -0,0 +1,29 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * KUnit API allowing dynamic analysis tools to interact with KUnit tests
+ *
+ * Copyright (C) 2020, Google LLC.
+ * Author: Uriel Guajardo <urielguajardo@google.com>
+ */
+
+#ifndef _KUNIT_TEST_BUG_H
+#define _KUNIT_TEST_BUG_H
+
+#define kunit_fail_current_test(fmt, ...) \
+ __kunit_fail_current_test(__FILE__, __LINE__, fmt, ##__VA_ARGS__)
+
+#if IS_BUILTIN(CONFIG_KUNIT)
+
+extern __printf(3, 4) void __kunit_fail_current_test(const char *file, int line,
+ const char *fmt, ...);
+
+#else
+
+static inline __printf(3, 4) void __kunit_fail_current_test(const char *file, int line,
+ const char *fmt, ...)
+{
+}
+
+#endif
+
+#endif /* _KUNIT_TEST_BUG_H */
diff --git a/include/kunit/test.h b/include/kunit/test.h
new file mode 100644
index 000000000..ebcdbddf8
--- /dev/null
+++ b/include/kunit/test.h
@@ -0,0 +1,1326 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Base unit test (KUnit) API.
+ *
+ * Copyright (C) 2019, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+
+#ifndef _KUNIT_TEST_H
+#define _KUNIT_TEST_H
+
+#include <kunit/assert.h>
+#include <kunit/try-catch.h>
+
+#include <linux/compiler.h>
+#include <linux/container_of.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/kconfig.h>
+#include <linux/kref.h>
+#include <linux/list.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/spinlock.h>
+#include <linux/string.h>
+#include <linux/types.h>
+
+#include <asm/rwonce.h>
+
+struct kunit;
+
+/* Size of log associated with test. */
+#define KUNIT_LOG_SIZE 512
+
+/* Maximum size of parameter description string. */
+#define KUNIT_PARAM_DESC_SIZE 128
+
+/* Maximum size of a status comment. */
+#define KUNIT_STATUS_COMMENT_SIZE 256
+
+/*
+ * TAP specifies subtest stream indentation of 4 spaces, 8 spaces for a
+ * sub-subtest. See the "Subtests" section in
+ * https://node-tap.org/tap-protocol/
+ */
+#define KUNIT_SUBTEST_INDENT " "
+#define KUNIT_SUBSUBTEST_INDENT " "
+
+/**
+ * enum kunit_status - Type of result for a test or test suite
+ * @KUNIT_SUCCESS: Denotes the test suite has not failed nor been skipped
+ * @KUNIT_FAILURE: Denotes the test has failed.
+ * @KUNIT_SKIPPED: Denotes the test has been skipped.
+ */
+enum kunit_status {
+ KUNIT_SUCCESS,
+ KUNIT_FAILURE,
+ KUNIT_SKIPPED,
+};
+
+/**
+ * struct kunit_case - represents an individual test case.
+ *
+ * @run_case: the function representing the actual test case.
+ * @name: the name of the test case.
+ * @generate_params: the generator function for parameterized tests.
+ *
+ * A test case is a function with the signature,
+ * ``void (*)(struct kunit *)``
+ * that makes expectations and assertions (see KUNIT_EXPECT_TRUE() and
+ * KUNIT_ASSERT_TRUE()) about code under test. Each test case is associated
+ * with a &struct kunit_suite and will be run after the suite's init
+ * function and followed by the suite's exit function.
+ *
+ * A test case should be static and should only be created with the
+ * KUNIT_CASE() macro; additionally, every array of test cases should be
+ * terminated with an empty test case.
+ *
+ * Example:
+ *
+ * .. code-block:: c
+ *
+ * void add_test_basic(struct kunit *test)
+ * {
+ * KUNIT_EXPECT_EQ(test, 1, add(1, 0));
+ * KUNIT_EXPECT_EQ(test, 2, add(1, 1));
+ * KUNIT_EXPECT_EQ(test, 0, add(-1, 1));
+ * KUNIT_EXPECT_EQ(test, INT_MAX, add(0, INT_MAX));
+ * KUNIT_EXPECT_EQ(test, -1, add(INT_MAX, INT_MIN));
+ * }
+ *
+ * static struct kunit_case example_test_cases[] = {
+ * KUNIT_CASE(add_test_basic),
+ * {}
+ * };
+ *
+ */
+struct kunit_case {
+ void (*run_case)(struct kunit *test);
+ const char *name;
+ const void* (*generate_params)(const void *prev, char *desc);
+
+ /* private: internal use only. */
+ enum kunit_status status;
+ char *log;
+};
+
+static inline char *kunit_status_to_ok_not_ok(enum kunit_status status)
+{
+ switch (status) {
+ case KUNIT_SKIPPED:
+ case KUNIT_SUCCESS:
+ return "ok";
+ case KUNIT_FAILURE:
+ return "not ok";
+ }
+ return "invalid";
+}
+
+/**
+ * KUNIT_CASE - A helper for creating a &struct kunit_case
+ *
+ * @test_name: a reference to a test case function.
+ *
+ * Takes a symbol for a function representing a test case and creates a
+ * &struct kunit_case object from it. See the documentation for
+ * &struct kunit_case for an example on how to use it.
+ */
+#define KUNIT_CASE(test_name) { .run_case = test_name, .name = #test_name }
+
+/**
+ * KUNIT_CASE_PARAM - A helper for creation a parameterized &struct kunit_case
+ *
+ * @test_name: a reference to a test case function.
+ * @gen_params: a reference to a parameter generator function.
+ *
+ * The generator function::
+ *
+ * const void* gen_params(const void *prev, char *desc)
+ *
+ * is used to lazily generate a series of arbitrarily typed values that fit into
+ * a void*. The argument @prev is the previously returned value, which should be
+ * used to derive the next value; @prev is set to NULL on the initial generator
+ * call. When no more values are available, the generator must return NULL.
+ * Optionally write a string into @desc (size of KUNIT_PARAM_DESC_SIZE)
+ * describing the parameter.
+ */
+#define KUNIT_CASE_PARAM(test_name, gen_params) \
+ { .run_case = test_name, .name = #test_name, \
+ .generate_params = gen_params }
+
+/**
+ * struct kunit_suite - describes a related collection of &struct kunit_case
+ *
+ * @name: the name of the test. Purely informational.
+ * @suite_init: called once per test suite before the test cases.
+ * @suite_exit: called once per test suite after all test cases.
+ * @init: called before every test case.
+ * @exit: called after every test case.
+ * @test_cases: a null terminated array of test cases.
+ *
+ * A kunit_suite is a collection of related &struct kunit_case s, such that
+ * @init is called before every test case and @exit is called after every
+ * test case, similar to the notion of a *test fixture* or a *test class*
+ * in other unit testing frameworks like JUnit or Googletest.
+ *
+ * Every &struct kunit_case must be associated with a kunit_suite for KUnit
+ * to run it.
+ */
+struct kunit_suite {
+ const char name[256];
+ int (*suite_init)(struct kunit_suite *suite);
+ void (*suite_exit)(struct kunit_suite *suite);
+ int (*init)(struct kunit *test);
+ void (*exit)(struct kunit *test);
+ struct kunit_case *test_cases;
+
+ /* private: internal use only */
+ char status_comment[KUNIT_STATUS_COMMENT_SIZE];
+ struct dentry *debugfs;
+ char *log;
+ int suite_init_err;
+};
+
+/**
+ * struct kunit - represents a running instance of a test.
+ *
+ * @priv: for user to store arbitrary data. Commonly used to pass data
+ * created in the init function (see &struct kunit_suite).
+ *
+ * Used to store information about the current context under which the test
+ * is running. Most of this data is private and should only be accessed
+ * indirectly via public functions; the one exception is @priv which can be
+ * used by the test writer to store arbitrary data.
+ */
+struct kunit {
+ void *priv;
+
+ /* private: internal use only. */
+ const char *name; /* Read only after initialization! */
+ char *log; /* Points at case log after initialization */
+ struct kunit_try_catch try_catch;
+ /* param_value is the current parameter value for a test case. */
+ const void *param_value;
+ /* param_index stores the index of the parameter in parameterized tests. */
+ int param_index;
+ /*
+ * success starts as true, and may only be set to false during a
+ * test case; thus, it is safe to update this across multiple
+ * threads using WRITE_ONCE; however, as a consequence, it may only
+ * be read after the test case finishes once all threads associated
+ * with the test case have terminated.
+ */
+ spinlock_t lock; /* Guards all mutable test state. */
+ enum kunit_status status; /* Read only after test_case finishes! */
+ /*
+ * Because resources is a list that may be updated multiple times (with
+ * new resources) from any thread associated with a test case, we must
+ * protect it with some type of lock.
+ */
+ struct list_head resources; /* Protected by lock. */
+
+ char status_comment[KUNIT_STATUS_COMMENT_SIZE];
+};
+
+static inline void kunit_set_failure(struct kunit *test)
+{
+ WRITE_ONCE(test->status, KUNIT_FAILURE);
+}
+
+bool kunit_enabled(void);
+
+void kunit_init_test(struct kunit *test, const char *name, char *log);
+
+int kunit_run_tests(struct kunit_suite *suite);
+
+size_t kunit_suite_num_test_cases(struct kunit_suite *suite);
+
+unsigned int kunit_test_case_num(struct kunit_suite *suite,
+ struct kunit_case *test_case);
+
+int __kunit_test_suites_init(struct kunit_suite * const * const suites, int num_suites);
+
+void __kunit_test_suites_exit(struct kunit_suite **suites, int num_suites);
+
+#if IS_BUILTIN(CONFIG_KUNIT)
+int kunit_run_all_tests(void);
+#else
+static inline int kunit_run_all_tests(void)
+{
+ return 0;
+}
+#endif /* IS_BUILTIN(CONFIG_KUNIT) */
+
+#define __kunit_test_suites(unique_array, ...) \
+ static struct kunit_suite *unique_array[] \
+ __aligned(sizeof(struct kunit_suite *)) \
+ __used __section(".kunit_test_suites") = { __VA_ARGS__ }
+
+/**
+ * kunit_test_suites() - used to register one or more &struct kunit_suite
+ * with KUnit.
+ *
+ * @__suites: a statically allocated list of &struct kunit_suite.
+ *
+ * Registers @suites with the test framework.
+ * This is done by placing the array of struct kunit_suite * in the
+ * .kunit_test_suites ELF section.
+ *
+ * When builtin, KUnit tests are all run via the executor at boot, and when
+ * built as a module, they run on module load.
+ *
+ */
+#define kunit_test_suites(__suites...) \
+ __kunit_test_suites(__UNIQUE_ID(array), \
+ ##__suites)
+
+#define kunit_test_suite(suite) kunit_test_suites(&suite)
+
+/**
+ * kunit_test_init_section_suites() - used to register one or more &struct
+ * kunit_suite containing init functions or
+ * init data.
+ *
+ * @__suites: a statically allocated list of &struct kunit_suite.
+ *
+ * This functions identically as kunit_test_suites() except that it suppresses
+ * modpost warnings for referencing functions marked __init or data marked
+ * __initdata; this is OK because currently KUnit only runs tests upon boot
+ * during the init phase or upon loading a module during the init phase.
+ *
+ * NOTE TO KUNIT DEVS: If we ever allow KUnit tests to be run after boot, these
+ * tests must be excluded.
+ *
+ * The only thing this macro does that's different from kunit_test_suites is
+ * that it suffixes the array and suite declarations it makes with _probe;
+ * modpost suppresses warnings about referencing init data for symbols named in
+ * this manner.
+ */
+#define kunit_test_init_section_suites(__suites...) \
+ __kunit_test_suites(CONCATENATE(__UNIQUE_ID(array), _probe), \
+ ##__suites)
+
+#define kunit_test_init_section_suite(suite) \
+ kunit_test_init_section_suites(&suite)
+
+#define kunit_suite_for_each_test_case(suite, test_case) \
+ for (test_case = suite->test_cases; test_case->run_case; test_case++)
+
+enum kunit_status kunit_suite_has_succeeded(struct kunit_suite *suite);
+
+/**
+ * kunit_kmalloc_array() - Like kmalloc_array() except the allocation is *test managed*.
+ * @test: The test context object.
+ * @n: number of elements.
+ * @size: The size in bytes of the desired memory.
+ * @gfp: flags passed to underlying kmalloc().
+ *
+ * Just like `kmalloc_array(...)`, except the allocation is managed by the test case
+ * and is automatically cleaned up after the test case concludes. See &struct
+ * kunit_resource for more information.
+ */
+void *kunit_kmalloc_array(struct kunit *test, size_t n, size_t size, gfp_t gfp);
+
+/**
+ * kunit_kmalloc() - Like kmalloc() except the allocation is *test managed*.
+ * @test: The test context object.
+ * @size: The size in bytes of the desired memory.
+ * @gfp: flags passed to underlying kmalloc().
+ *
+ * See kmalloc() and kunit_kmalloc_array() for more information.
+ */
+static inline void *kunit_kmalloc(struct kunit *test, size_t size, gfp_t gfp)
+{
+ return kunit_kmalloc_array(test, 1, size, gfp);
+}
+
+/**
+ * kunit_kfree() - Like kfree except for allocations managed by KUnit.
+ * @test: The test case to which the resource belongs.
+ * @ptr: The memory allocation to free.
+ */
+void kunit_kfree(struct kunit *test, const void *ptr);
+
+/**
+ * kunit_kzalloc() - Just like kunit_kmalloc(), but zeroes the allocation.
+ * @test: The test context object.
+ * @size: The size in bytes of the desired memory.
+ * @gfp: flags passed to underlying kmalloc().
+ *
+ * See kzalloc() and kunit_kmalloc_array() for more information.
+ */
+static inline void *kunit_kzalloc(struct kunit *test, size_t size, gfp_t gfp)
+{
+ return kunit_kmalloc(test, size, gfp | __GFP_ZERO);
+}
+
+/**
+ * kunit_kcalloc() - Just like kunit_kmalloc_array(), but zeroes the allocation.
+ * @test: The test context object.
+ * @n: number of elements.
+ * @size: The size in bytes of the desired memory.
+ * @gfp: flags passed to underlying kmalloc().
+ *
+ * See kcalloc() and kunit_kmalloc_array() for more information.
+ */
+static inline void *kunit_kcalloc(struct kunit *test, size_t n, size_t size, gfp_t gfp)
+{
+ return kunit_kmalloc_array(test, n, size, gfp | __GFP_ZERO);
+}
+
+void kunit_cleanup(struct kunit *test);
+
+void __printf(2, 3) kunit_log_append(char *log, const char *fmt, ...);
+
+/**
+ * kunit_mark_skipped() - Marks @test_or_suite as skipped
+ *
+ * @test_or_suite: The test context object.
+ * @fmt: A printk() style format string.
+ *
+ * Marks the test as skipped. @fmt is given output as the test status
+ * comment, typically the reason the test was skipped.
+ *
+ * Test execution continues after kunit_mark_skipped() is called.
+ */
+#define kunit_mark_skipped(test_or_suite, fmt, ...) \
+ do { \
+ WRITE_ONCE((test_or_suite)->status, KUNIT_SKIPPED); \
+ scnprintf((test_or_suite)->status_comment, \
+ KUNIT_STATUS_COMMENT_SIZE, \
+ fmt, ##__VA_ARGS__); \
+ } while (0)
+
+/**
+ * kunit_skip() - Marks @test_or_suite as skipped
+ *
+ * @test_or_suite: The test context object.
+ * @fmt: A printk() style format string.
+ *
+ * Skips the test. @fmt is given output as the test status
+ * comment, typically the reason the test was skipped.
+ *
+ * Test execution is halted after kunit_skip() is called.
+ */
+#define kunit_skip(test_or_suite, fmt, ...) \
+ do { \
+ kunit_mark_skipped((test_or_suite), fmt, ##__VA_ARGS__);\
+ kunit_try_catch_throw(&((test_or_suite)->try_catch)); \
+ } while (0)
+
+/*
+ * printk and log to per-test or per-suite log buffer. Logging only done
+ * if CONFIG_KUNIT_DEBUGFS is 'y'; if it is 'n', no log is allocated/used.
+ */
+#define kunit_log(lvl, test_or_suite, fmt, ...) \
+ do { \
+ printk(lvl fmt, ##__VA_ARGS__); \
+ kunit_log_append((test_or_suite)->log, fmt "\n", \
+ ##__VA_ARGS__); \
+ } while (0)
+
+#define kunit_printk(lvl, test, fmt, ...) \
+ kunit_log(lvl, test, KUNIT_SUBTEST_INDENT "# %s: " fmt, \
+ (test)->name, ##__VA_ARGS__)
+
+/**
+ * kunit_info() - Prints an INFO level message associated with @test.
+ *
+ * @test: The test context object.
+ * @fmt: A printk() style format string.
+ *
+ * Prints an info level message associated with the test suite being run.
+ * Takes a variable number of format parameters just like printk().
+ */
+#define kunit_info(test, fmt, ...) \
+ kunit_printk(KERN_INFO, test, fmt, ##__VA_ARGS__)
+
+/**
+ * kunit_warn() - Prints a WARN level message associated with @test.
+ *
+ * @test: The test context object.
+ * @fmt: A printk() style format string.
+ *
+ * Prints a warning level message.
+ */
+#define kunit_warn(test, fmt, ...) \
+ kunit_printk(KERN_WARNING, test, fmt, ##__VA_ARGS__)
+
+/**
+ * kunit_err() - Prints an ERROR level message associated with @test.
+ *
+ * @test: The test context object.
+ * @fmt: A printk() style format string.
+ *
+ * Prints an error level message.
+ */
+#define kunit_err(test, fmt, ...) \
+ kunit_printk(KERN_ERR, test, fmt, ##__VA_ARGS__)
+
+/**
+ * KUNIT_SUCCEED() - A no-op expectation. Only exists for code clarity.
+ * @test: The test context object.
+ *
+ * The opposite of KUNIT_FAIL(), it is an expectation that cannot fail. In other
+ * words, it does nothing and only exists for code clarity. See
+ * KUNIT_EXPECT_TRUE() for more information.
+ */
+#define KUNIT_SUCCEED(test) do {} while (0)
+
+void kunit_do_failed_assertion(struct kunit *test,
+ const struct kunit_loc *loc,
+ enum kunit_assert_type type,
+ const struct kunit_assert *assert,
+ assert_format_t assert_format,
+ const char *fmt, ...);
+
+#define _KUNIT_FAILED(test, assert_type, assert_class, assert_format, INITIALIZER, fmt, ...) do { \
+ static const struct kunit_loc __loc = KUNIT_CURRENT_LOC; \
+ const struct assert_class __assertion = INITIALIZER; \
+ kunit_do_failed_assertion(test, \
+ &__loc, \
+ assert_type, \
+ &__assertion.assert, \
+ assert_format, \
+ fmt, \
+ ##__VA_ARGS__); \
+} while (0)
+
+
+#define KUNIT_FAIL_ASSERTION(test, assert_type, fmt, ...) \
+ _KUNIT_FAILED(test, \
+ assert_type, \
+ kunit_fail_assert, \
+ kunit_fail_assert_format, \
+ {}, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_FAIL() - Always causes a test to fail when evaluated.
+ * @test: The test context object.
+ * @fmt: an informational message to be printed when the assertion is made.
+ * @...: string format arguments.
+ *
+ * The opposite of KUNIT_SUCCEED(), it is an expectation that always fails. In
+ * other words, it always results in a failed expectation, and consequently
+ * always causes the test case to fail when evaluated. See KUNIT_EXPECT_TRUE()
+ * for more information.
+ */
+#define KUNIT_FAIL(test, fmt, ...) \
+ KUNIT_FAIL_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ fmt, \
+ ##__VA_ARGS__)
+
+#define KUNIT_UNARY_ASSERTION(test, \
+ assert_type, \
+ condition, \
+ expected_true, \
+ fmt, \
+ ...) \
+do { \
+ if (likely(!!(condition) == !!expected_true)) \
+ break; \
+ \
+ _KUNIT_FAILED(test, \
+ assert_type, \
+ kunit_unary_assert, \
+ kunit_unary_assert_format, \
+ KUNIT_INIT_UNARY_ASSERT_STRUCT(#condition, \
+ expected_true), \
+ fmt, \
+ ##__VA_ARGS__); \
+} while (0)
+
+#define KUNIT_TRUE_MSG_ASSERTION(test, assert_type, condition, fmt, ...) \
+ KUNIT_UNARY_ASSERTION(test, \
+ assert_type, \
+ condition, \
+ true, \
+ fmt, \
+ ##__VA_ARGS__)
+
+#define KUNIT_FALSE_MSG_ASSERTION(test, assert_type, condition, fmt, ...) \
+ KUNIT_UNARY_ASSERTION(test, \
+ assert_type, \
+ condition, \
+ false, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/*
+ * A factory macro for defining the assertions and expectations for the basic
+ * comparisons defined for the built in types.
+ *
+ * Unfortunately, there is no common type that all types can be promoted to for
+ * which all the binary operators behave the same way as for the actual types
+ * (for example, there is no type that long long and unsigned long long can
+ * both be cast to where the comparison result is preserved for all values). So
+ * the best we can do is do the comparison in the original types and then coerce
+ * everything to long long for printing; this way, the comparison behaves
+ * correctly and the printed out value usually makes sense without
+ * interpretation, but can always be interpreted to figure out the actual
+ * value.
+ */
+#define KUNIT_BASE_BINARY_ASSERTION(test, \
+ assert_class, \
+ format_func, \
+ assert_type, \
+ left, \
+ op, \
+ right, \
+ fmt, \
+ ...) \
+do { \
+ const typeof(left) __left = (left); \
+ const typeof(right) __right = (right); \
+ static const struct kunit_binary_assert_text __text = { \
+ .operation = #op, \
+ .left_text = #left, \
+ .right_text = #right, \
+ }; \
+ \
+ if (likely(__left op __right)) \
+ break; \
+ \
+ _KUNIT_FAILED(test, \
+ assert_type, \
+ assert_class, \
+ format_func, \
+ KUNIT_INIT_BINARY_ASSERT_STRUCT(&__text, \
+ __left, \
+ __right), \
+ fmt, \
+ ##__VA_ARGS__); \
+} while (0)
+
+#define KUNIT_BINARY_INT_ASSERTION(test, \
+ assert_type, \
+ left, \
+ op, \
+ right, \
+ fmt, \
+ ...) \
+ KUNIT_BASE_BINARY_ASSERTION(test, \
+ kunit_binary_assert, \
+ kunit_binary_assert_format, \
+ assert_type, \
+ left, op, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+#define KUNIT_BINARY_PTR_ASSERTION(test, \
+ assert_type, \
+ left, \
+ op, \
+ right, \
+ fmt, \
+ ...) \
+ KUNIT_BASE_BINARY_ASSERTION(test, \
+ kunit_binary_ptr_assert, \
+ kunit_binary_ptr_assert_format, \
+ assert_type, \
+ left, op, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+#define KUNIT_BINARY_STR_ASSERTION(test, \
+ assert_type, \
+ left, \
+ op, \
+ right, \
+ fmt, \
+ ...) \
+do { \
+ const char *__left = (left); \
+ const char *__right = (right); \
+ static const struct kunit_binary_assert_text __text = { \
+ .operation = #op, \
+ .left_text = #left, \
+ .right_text = #right, \
+ }; \
+ \
+ if (likely(strcmp(__left, __right) op 0)) \
+ break; \
+ \
+ \
+ _KUNIT_FAILED(test, \
+ assert_type, \
+ kunit_binary_str_assert, \
+ kunit_binary_str_assert_format, \
+ KUNIT_INIT_BINARY_ASSERT_STRUCT(&__text, \
+ __left, \
+ __right), \
+ fmt, \
+ ##__VA_ARGS__); \
+} while (0)
+
+#define KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test, \
+ assert_type, \
+ ptr, \
+ fmt, \
+ ...) \
+do { \
+ const typeof(ptr) __ptr = (ptr); \
+ \
+ if (!IS_ERR_OR_NULL(__ptr)) \
+ break; \
+ \
+ _KUNIT_FAILED(test, \
+ assert_type, \
+ kunit_ptr_not_err_assert, \
+ kunit_ptr_not_err_assert_format, \
+ KUNIT_INIT_PTR_NOT_ERR_STRUCT(#ptr, __ptr), \
+ fmt, \
+ ##__VA_ARGS__); \
+} while (0)
+
+/**
+ * KUNIT_EXPECT_TRUE() - Causes a test failure when the expression is not true.
+ * @test: The test context object.
+ * @condition: an arbitrary boolean expression. The test fails when this does
+ * not evaluate to true.
+ *
+ * This and expectations of the form `KUNIT_EXPECT_*` will cause the test case
+ * to fail when the specified condition is not met; however, it will not prevent
+ * the test case from continuing to run; this is otherwise known as an
+ * *expectation failure*.
+ */
+#define KUNIT_EXPECT_TRUE(test, condition) \
+ KUNIT_EXPECT_TRUE_MSG(test, condition, NULL)
+
+#define KUNIT_EXPECT_TRUE_MSG(test, condition, fmt, ...) \
+ KUNIT_TRUE_MSG_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ condition, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_FALSE() - Makes a test failure when the expression is not false.
+ * @test: The test context object.
+ * @condition: an arbitrary boolean expression. The test fails when this does
+ * not evaluate to false.
+ *
+ * Sets an expectation that @condition evaluates to false. See
+ * KUNIT_EXPECT_TRUE() for more information.
+ */
+#define KUNIT_EXPECT_FALSE(test, condition) \
+ KUNIT_EXPECT_FALSE_MSG(test, condition, NULL)
+
+#define KUNIT_EXPECT_FALSE_MSG(test, condition, fmt, ...) \
+ KUNIT_FALSE_MSG_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ condition, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_EQ() - Sets an expectation that @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are
+ * equal. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_EQ(test, left, right) \
+ KUNIT_EXPECT_EQ_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_EQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, ==, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_PTR_EQ() - Expects that pointers @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a pointer.
+ * @right: an arbitrary expression that evaluates to a pointer.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are
+ * equal. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, (@left) == (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_PTR_EQ(test, left, right) \
+ KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_PTR_EQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, ==, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_NE() - An expectation that @left and @right are not equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are not
+ * equal. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_NE(test, left, right) \
+ KUNIT_EXPECT_NE_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_NE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, !=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_PTR_NE() - Expects that pointers @left and @right are not equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a pointer.
+ * @right: an arbitrary expression that evaluates to a pointer.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are not
+ * equal. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, (@left) != (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_PTR_NE(test, left, right) \
+ KUNIT_EXPECT_PTR_NE_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_PTR_NE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, !=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_LT() - An expectation that @left is less than @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an expectation that the value that @left evaluates to is less than the
+ * value that @right evaluates to. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, (@left) < (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_LT(test, left, right) \
+ KUNIT_EXPECT_LT_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_LT_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, <, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_LE() - Expects that @left is less than or equal to @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an expectation that the value that @left evaluates to is less than or
+ * equal to the value that @right evaluates to. Semantically this is equivalent
+ * to KUNIT_EXPECT_TRUE(@test, (@left) <= (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_LE(test, left, right) \
+ KUNIT_EXPECT_LE_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_LE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, <=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_GT() - An expectation that @left is greater than @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an expectation that the value that @left evaluates to is greater than
+ * the value that @right evaluates to. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, (@left) > (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_GT(test, left, right) \
+ KUNIT_EXPECT_GT_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_GT_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, >, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_GE() - Expects that @left is greater than or equal to @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an expectation that the value that @left evaluates to is greater than
+ * the value that @right evaluates to. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, (@left) >= (@right)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_GE(test, left, right) \
+ KUNIT_EXPECT_GE_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_GE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, >=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_STREQ() - Expects that strings @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a null terminated string.
+ * @right: an arbitrary expression that evaluates to a null terminated string.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are
+ * equal. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, !strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE()
+ * for more information.
+ */
+#define KUNIT_EXPECT_STREQ(test, left, right) \
+ KUNIT_EXPECT_STREQ_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_STREQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_STR_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, ==, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_STRNEQ() - Expects that strings @left and @right are not equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a null terminated string.
+ * @right: an arbitrary expression that evaluates to a null terminated string.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are
+ * not equal. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_EXPECT_TRUE()
+ * for more information.
+ */
+#define KUNIT_EXPECT_STRNEQ(test, left, right) \
+ KUNIT_EXPECT_STRNEQ_MSG(test, left, right, NULL)
+
+#define KUNIT_EXPECT_STRNEQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_STR_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ left, !=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_NULL() - Expects that @ptr is null.
+ * @test: The test context object.
+ * @ptr: an arbitrary pointer.
+ *
+ * Sets an expectation that the value that @ptr evaluates to is null. This is
+ * semantically equivalent to KUNIT_EXPECT_PTR_EQ(@test, ptr, NULL).
+ * See KUNIT_EXPECT_TRUE() for more information.
+ */
+#define KUNIT_EXPECT_NULL(test, ptr) \
+ KUNIT_EXPECT_NULL_MSG(test, \
+ ptr, \
+ NULL)
+
+#define KUNIT_EXPECT_NULL_MSG(test, ptr, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ ptr, ==, NULL, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_NOT_NULL() - Expects that @ptr is not null.
+ * @test: The test context object.
+ * @ptr: an arbitrary pointer.
+ *
+ * Sets an expectation that the value that @ptr evaluates to is not null. This
+ * is semantically equivalent to KUNIT_EXPECT_PTR_NE(@test, ptr, NULL).
+ * See KUNIT_EXPECT_TRUE() for more information.
+ */
+#define KUNIT_EXPECT_NOT_NULL(test, ptr) \
+ KUNIT_EXPECT_NOT_NULL_MSG(test, \
+ ptr, \
+ NULL)
+
+#define KUNIT_EXPECT_NOT_NULL_MSG(test, ptr, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ ptr, !=, NULL, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_EXPECT_NOT_ERR_OR_NULL() - Expects that @ptr is not null and not err.
+ * @test: The test context object.
+ * @ptr: an arbitrary pointer.
+ *
+ * Sets an expectation that the value that @ptr evaluates to is not null and not
+ * an errno stored in a pointer. This is semantically equivalent to
+ * KUNIT_EXPECT_TRUE(@test, !IS_ERR_OR_NULL(@ptr)). See KUNIT_EXPECT_TRUE() for
+ * more information.
+ */
+#define KUNIT_EXPECT_NOT_ERR_OR_NULL(test, ptr) \
+ KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, ptr, NULL)
+
+#define KUNIT_EXPECT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...) \
+ KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test, \
+ KUNIT_EXPECTATION, \
+ ptr, \
+ fmt, \
+ ##__VA_ARGS__)
+
+#define KUNIT_ASSERT_FAILURE(test, fmt, ...) \
+ KUNIT_FAIL_ASSERTION(test, KUNIT_ASSERTION, fmt, ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_TRUE() - Sets an assertion that @condition is true.
+ * @test: The test context object.
+ * @condition: an arbitrary boolean expression. The test fails and aborts when
+ * this does not evaluate to true.
+ *
+ * This and assertions of the form `KUNIT_ASSERT_*` will cause the test case to
+ * fail *and immediately abort* when the specified condition is not met. Unlike
+ * an expectation failure, it will prevent the test case from continuing to run;
+ * this is otherwise known as an *assertion failure*.
+ */
+#define KUNIT_ASSERT_TRUE(test, condition) \
+ KUNIT_ASSERT_TRUE_MSG(test, condition, NULL)
+
+#define KUNIT_ASSERT_TRUE_MSG(test, condition, fmt, ...) \
+ KUNIT_TRUE_MSG_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ condition, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_FALSE() - Sets an assertion that @condition is false.
+ * @test: The test context object.
+ * @condition: an arbitrary boolean expression.
+ *
+ * Sets an assertion that the value that @condition evaluates to is false. This
+ * is the same as KUNIT_EXPECT_FALSE(), except it causes an assertion failure
+ * (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_FALSE(test, condition) \
+ KUNIT_ASSERT_FALSE_MSG(test, condition, NULL)
+
+#define KUNIT_ASSERT_FALSE_MSG(test, condition, fmt, ...) \
+ KUNIT_FALSE_MSG_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ condition, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_EQ() - Sets an assertion that @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are
+ * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_EQ(test, left, right) \
+ KUNIT_ASSERT_EQ_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_EQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, ==, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a pointer.
+ * @right: an arbitrary expression that evaluates to a pointer.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are
+ * equal. This is the same as KUNIT_EXPECT_EQ(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_PTR_EQ(test, left, right) \
+ KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_PTR_EQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, ==, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_NE() - An assertion that @left and @right are not equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are not
+ * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_NE(test, left, right) \
+ KUNIT_ASSERT_NE_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_NE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, !=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_PTR_NE() - Asserts that pointers @left and @right are not equal.
+ * KUNIT_ASSERT_PTR_EQ() - Asserts that pointers @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a pointer.
+ * @right: an arbitrary expression that evaluates to a pointer.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are not
+ * equal. This is the same as KUNIT_EXPECT_NE(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_PTR_NE(test, left, right) \
+ KUNIT_ASSERT_PTR_NE_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_PTR_NE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, !=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+/**
+ * KUNIT_ASSERT_LT() - An assertion that @left is less than @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is less than the
+ * value that @right evaluates to. This is the same as KUNIT_EXPECT_LT(), except
+ * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
+ * is not met.
+ */
+#define KUNIT_ASSERT_LT(test, left, right) \
+ KUNIT_ASSERT_LT_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_LT_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, <, right, \
+ fmt, \
+ ##__VA_ARGS__)
+/**
+ * KUNIT_ASSERT_LE() - An assertion that @left is less than or equal to @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is less than or
+ * equal to the value that @right evaluates to. This is the same as
+ * KUNIT_EXPECT_LE(), except it causes an assertion failure (see
+ * KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_LE(test, left, right) \
+ KUNIT_ASSERT_LE_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_LE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, <=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_GT() - An assertion that @left is greater than @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is greater than the
+ * value that @right evaluates to. This is the same as KUNIT_EXPECT_GT(), except
+ * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
+ * is not met.
+ */
+#define KUNIT_ASSERT_GT(test, left, right) \
+ KUNIT_ASSERT_GT_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_GT_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, >, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_GE() - Assertion that @left is greater than or equal to @right.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a primitive C type.
+ * @right: an arbitrary expression that evaluates to a primitive C type.
+ *
+ * Sets an assertion that the value that @left evaluates to is greater than the
+ * value that @right evaluates to. This is the same as KUNIT_EXPECT_GE(), except
+ * it causes an assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion
+ * is not met.
+ */
+#define KUNIT_ASSERT_GE(test, left, right) \
+ KUNIT_ASSERT_GE_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_GE_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_INT_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, >=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_STREQ() - An assertion that strings @left and @right are equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a null terminated string.
+ * @right: an arbitrary expression that evaluates to a null terminated string.
+ *
+ * Sets an assertion that the values that @left and @right evaluate to are
+ * equal. This is the same as KUNIT_EXPECT_STREQ(), except it causes an
+ * assertion failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_STREQ(test, left, right) \
+ KUNIT_ASSERT_STREQ_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_STREQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_STR_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, ==, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_STRNEQ() - Expects that strings @left and @right are not equal.
+ * @test: The test context object.
+ * @left: an arbitrary expression that evaluates to a null terminated string.
+ * @right: an arbitrary expression that evaluates to a null terminated string.
+ *
+ * Sets an expectation that the values that @left and @right evaluate to are
+ * not equal. This is semantically equivalent to
+ * KUNIT_ASSERT_TRUE(@test, strcmp((@left), (@right))). See KUNIT_ASSERT_TRUE()
+ * for more information.
+ */
+#define KUNIT_ASSERT_STRNEQ(test, left, right) \
+ KUNIT_ASSERT_STRNEQ_MSG(test, left, right, NULL)
+
+#define KUNIT_ASSERT_STRNEQ_MSG(test, left, right, fmt, ...) \
+ KUNIT_BINARY_STR_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ left, !=, right, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_NULL() - Asserts that pointers @ptr is null.
+ * @test: The test context object.
+ * @ptr: an arbitrary pointer.
+ *
+ * Sets an assertion that the values that @ptr evaluates to is null. This is
+ * the same as KUNIT_EXPECT_NULL(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_NULL(test, ptr) \
+ KUNIT_ASSERT_NULL_MSG(test, \
+ ptr, \
+ NULL)
+
+#define KUNIT_ASSERT_NULL_MSG(test, ptr, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ ptr, ==, NULL, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_NOT_NULL() - Asserts that pointers @ptr is not null.
+ * @test: The test context object.
+ * @ptr: an arbitrary pointer.
+ *
+ * Sets an assertion that the values that @ptr evaluates to is not null. This
+ * is the same as KUNIT_EXPECT_NOT_NULL(), except it causes an assertion
+ * failure (see KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_NOT_NULL(test, ptr) \
+ KUNIT_ASSERT_NOT_NULL_MSG(test, \
+ ptr, \
+ NULL)
+
+#define KUNIT_ASSERT_NOT_NULL_MSG(test, ptr, fmt, ...) \
+ KUNIT_BINARY_PTR_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ ptr, !=, NULL, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ASSERT_NOT_ERR_OR_NULL() - Assertion that @ptr is not null and not err.
+ * @test: The test context object.
+ * @ptr: an arbitrary pointer.
+ *
+ * Sets an assertion that the value that @ptr evaluates to is not null and not
+ * an errno stored in a pointer. This is the same as
+ * KUNIT_EXPECT_NOT_ERR_OR_NULL(), except it causes an assertion failure (see
+ * KUNIT_ASSERT_TRUE()) when the assertion is not met.
+ */
+#define KUNIT_ASSERT_NOT_ERR_OR_NULL(test, ptr) \
+ KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, NULL)
+
+#define KUNIT_ASSERT_NOT_ERR_OR_NULL_MSG(test, ptr, fmt, ...) \
+ KUNIT_PTR_NOT_ERR_OR_NULL_MSG_ASSERTION(test, \
+ KUNIT_ASSERTION, \
+ ptr, \
+ fmt, \
+ ##__VA_ARGS__)
+
+/**
+ * KUNIT_ARRAY_PARAM() - Define test parameter generator from an array.
+ * @name: prefix for the test parameter generator function.
+ * @array: array of test parameters.
+ * @get_desc: function to convert param to description; NULL to use default
+ *
+ * Define function @name_gen_params which uses @array to generate parameters.
+ */
+#define KUNIT_ARRAY_PARAM(name, array, get_desc) \
+ static const void *name##_gen_params(const void *prev, char *desc) \
+ { \
+ typeof((array)[0]) *__next = prev ? ((typeof(__next)) prev) + 1 : (array); \
+ if (__next - (array) < ARRAY_SIZE((array))) { \
+ void (*__get_desc)(typeof(__next), char *) = get_desc; \
+ if (__get_desc) \
+ __get_desc(__next, desc); \
+ return __next; \
+ } \
+ return NULL; \
+ }
+
+// TODO(dlatypov@google.com): consider eventually migrating users to explicitly
+// include resource.h themselves if they need it.
+#include <kunit/resource.h>
+
+#endif /* _KUNIT_TEST_H */
diff --git a/include/kunit/try-catch.h b/include/kunit/try-catch.h
new file mode 100644
index 000000000..c507dd431
--- /dev/null
+++ b/include/kunit/try-catch.h
@@ -0,0 +1,65 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * An API to allow a function, that may fail, to be executed, and recover in a
+ * controlled manner.
+ *
+ * Copyright (C) 2019, Google LLC.
+ * Author: Brendan Higgins <brendanhiggins@google.com>
+ */
+
+#ifndef _KUNIT_TRY_CATCH_H
+#define _KUNIT_TRY_CATCH_H
+
+#include <linux/types.h>
+
+typedef void (*kunit_try_catch_func_t)(void *);
+
+struct completion;
+struct kunit;
+
+/**
+ * struct kunit_try_catch - provides a generic way to run code which might fail.
+ * @test: The test case that is currently being executed.
+ * @try_completion: Completion that the control thread waits on while test runs.
+ * @try_result: Contains any errno obtained while running test case.
+ * @try: The function, the test case, to attempt to run.
+ * @catch: The function called if @try bails out.
+ * @context: used to pass user data to the try and catch functions.
+ *
+ * kunit_try_catch provides a generic, architecture independent way to execute
+ * an arbitrary function of type kunit_try_catch_func_t which may bail out by
+ * calling kunit_try_catch_throw(). If kunit_try_catch_throw() is called, @try
+ * is stopped at the site of invocation and @catch is called.
+ *
+ * struct kunit_try_catch provides a generic interface for the functionality
+ * needed to implement kunit->abort() which in turn is needed for implementing
+ * assertions. Assertions allow stating a precondition for a test simplifying
+ * how test cases are written and presented.
+ *
+ * Assertions are like expectations, except they abort (call
+ * kunit_try_catch_throw()) when the specified condition is not met. This is
+ * useful when you look at a test case as a logical statement about some piece
+ * of code, where assertions are the premises for the test case, and the
+ * conclusion is a set of predicates, rather expectations, that must all be
+ * true. If your premises are violated, it does not makes sense to continue.
+ */
+struct kunit_try_catch {
+ /* private: internal use only. */
+ struct kunit *test;
+ struct completion *try_completion;
+ int try_result;
+ kunit_try_catch_func_t try;
+ kunit_try_catch_func_t catch;
+ void *context;
+};
+
+void kunit_try_catch_run(struct kunit_try_catch *try_catch, void *context);
+
+void __noreturn kunit_try_catch_throw(struct kunit_try_catch *try_catch);
+
+static inline int kunit_try_catch_get_result(struct kunit_try_catch *try_catch)
+{
+ return try_catch->try_result;
+}
+
+#endif /* _KUNIT_TRY_CATCH_H */
diff --git a/include/kunit/visibility.h b/include/kunit/visibility.h
new file mode 100644
index 000000000..0dfe35fee
--- /dev/null
+++ b/include/kunit/visibility.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * KUnit API to allow symbols to be conditionally visible during KUnit
+ * testing
+ *
+ * Copyright (C) 2022, Google LLC.
+ * Author: Rae Moar <rmoar@google.com>
+ */
+
+#ifndef _KUNIT_VISIBILITY_H
+#define _KUNIT_VISIBILITY_H
+
+#if IS_ENABLED(CONFIG_KUNIT)
+ /**
+ * VISIBLE_IF_KUNIT - A macro that sets symbols to be static if
+ * CONFIG_KUNIT is not enabled. Otherwise if CONFIG_KUNIT is enabled
+ * there is no change to the symbol definition.
+ */
+ #define VISIBLE_IF_KUNIT
+ /**
+ * EXPORT_SYMBOL_IF_KUNIT(symbol) - Exports symbol into
+ * EXPORTED_FOR_KUNIT_TESTING namespace only if CONFIG_KUNIT is
+ * enabled. Must use MODULE_IMPORT_NS(EXPORTED_FOR_KUNIT_TESTING)
+ * in test file in order to use symbols.
+ */
+ #define EXPORT_SYMBOL_IF_KUNIT(symbol) EXPORT_SYMBOL_NS(symbol, \
+ EXPORTED_FOR_KUNIT_TESTING)
+#else
+ #define VISIBLE_IF_KUNIT static
+ #define EXPORT_SYMBOL_IF_KUNIT(symbol)
+#endif
+
+#endif /* _KUNIT_VISIBILITY_H */