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selftests: add seccomp suite
This imports the existing seccomp test suite into the kernel's selftests tree. It contains extensive testing of seccomp features and corner cases. There remain additional tests to move into the kernel tree, but they have not yet been ported to all the architectures seccomp supports: https://github.com/redpig/seccomp/tree/master/tests Signed-off-by: Kees Cook <keescook@chromium.org> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
This commit is contained in:
Kees Cook
Shuah Khan
parent
390db010c9
commit
c99ee51a9d
@ -8773,6 +8773,7 @@ S: Supported
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F: kernel/seccomp.c
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F: include/uapi/linux/seccomp.h
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F: include/linux/seccomp.h
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F: tools/testing/selftests/seccomp/*
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K: \bsecure_computing
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K: \bTIF_SECCOMP\b
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@ -13,6 +13,7 @@ TARGETS += mqueue
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TARGETS += net
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TARGETS += powerpc
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TARGETS += ptrace
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TARGETS += seccomp
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TARGETS += size
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TARGETS += sysctl
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TARGETS += timers
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1
tools/testing/selftests/seccomp/.gitignore
vendored
Normal file
1
tools/testing/selftests/seccomp/.gitignore
vendored
Normal file
@ -0,0 +1 @@
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seccomp_bpf
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10
tools/testing/selftests/seccomp/Makefile
Normal file
10
tools/testing/selftests/seccomp/Makefile
Normal file
@ -0,0 +1,10 @@
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TEST_PROGS := seccomp_bpf
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CFLAGS += -Wl,-no-as-needed -Wall
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LDFLAGS += -lpthread
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all: $(TEST_PROGS)
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include ../lib.mk
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clean:
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$(RM) $(TEST_PROGS)
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2109
tools/testing/selftests/seccomp/seccomp_bpf.c
Normal file
2109
tools/testing/selftests/seccomp/seccomp_bpf.c
Normal file
File diff suppressed because it is too large
Load Diff
537
tools/testing/selftests/seccomp/test_harness.h
Normal file
537
tools/testing/selftests/seccomp/test_harness.h
Normal file
@ -0,0 +1,537 @@
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/*
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* Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by the GPLv2 license.
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*
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* test_harness.h: simple C unit test helper.
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*
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* Usage:
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* #include "test_harness.h"
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* TEST(standalone_test) {
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* do_some_stuff;
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* EXPECT_GT(10, stuff) {
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* stuff_state_t state;
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* enumerate_stuff_state(&state);
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* TH_LOG("expectation failed with state: %s", state.msg);
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* }
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* more_stuff;
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* ASSERT_NE(some_stuff, NULL) TH_LOG("how did it happen?!");
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* last_stuff;
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* EXPECT_EQ(0, last_stuff);
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* }
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*
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* FIXTURE(my_fixture) {
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* mytype_t *data;
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* int awesomeness_level;
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* };
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* FIXTURE_SETUP(my_fixture) {
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* self->data = mytype_new();
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* ASSERT_NE(NULL, self->data);
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* }
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* FIXTURE_TEARDOWN(my_fixture) {
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* mytype_free(self->data);
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* }
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* TEST_F(my_fixture, data_is_good) {
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* EXPECT_EQ(1, is_my_data_good(self->data));
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* }
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*
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* TEST_HARNESS_MAIN
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*
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* API inspired by code.google.com/p/googletest
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*/
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#ifndef TEST_HARNESS_H_
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#define TEST_HARNESS_H_
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <unistd.h>
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/* All exported functionality should be declared through this macro. */
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#define TEST_API(x) _##x
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/*
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* Exported APIs
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*/
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/* TEST(name) { implementation }
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* Defines a test by name.
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* Names must be unique and tests must not be run in parallel. The
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* implementation containing block is a function and scoping should be treated
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* as such. Returning early may be performed with a bare "return;" statement.
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*
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* EXPECT_* and ASSERT_* are valid in a TEST() { } context.
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*/
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#define TEST TEST_API(TEST)
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/* TEST_SIGNAL(name, signal) { implementation }
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* Defines a test by name and the expected term signal.
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* Names must be unique and tests must not be run in parallel. The
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* implementation containing block is a function and scoping should be treated
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* as such. Returning early may be performed with a bare "return;" statement.
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*
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* EXPECT_* and ASSERT_* are valid in a TEST() { } context.
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*/
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#define TEST_SIGNAL TEST_API(TEST_SIGNAL)
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/* FIXTURE(datatype name) {
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* type property1;
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* ...
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* };
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* Defines the data provided to TEST_F()-defined tests as |self|. It should be
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* populated and cleaned up using FIXTURE_SETUP and FIXTURE_TEARDOWN.
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*/
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#define FIXTURE TEST_API(FIXTURE)
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/* FIXTURE_DATA(datatype name)
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* This call may be used when the type of the fixture data
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* is needed. In general, this should not be needed unless
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* the |self| is being passed to a helper directly.
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*/
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#define FIXTURE_DATA TEST_API(FIXTURE_DATA)
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/* FIXTURE_SETUP(fixture name) { implementation }
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* Populates the required "setup" function for a fixture. An instance of the
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* datatype defined with _FIXTURE_DATA will be exposed as |self| for the
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* implementation.
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*
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* ASSERT_* are valid for use in this context and will prempt the execution
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* of any dependent fixture tests.
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*
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* A bare "return;" statement may be used to return early.
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*/
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#define FIXTURE_SETUP TEST_API(FIXTURE_SETUP)
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/* FIXTURE_TEARDOWN(fixture name) { implementation }
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* Populates the required "teardown" function for a fixture. An instance of the
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* datatype defined with _FIXTURE_DATA will be exposed as |self| for the
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* implementation to clean up.
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*
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* A bare "return;" statement may be used to return early.
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*/
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#define FIXTURE_TEARDOWN TEST_API(FIXTURE_TEARDOWN)
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/* TEST_F(fixture, name) { implementation }
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* Defines a test that depends on a fixture (e.g., is part of a test case).
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* Very similar to TEST() except that |self| is the setup instance of fixture's
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* datatype exposed for use by the implementation.
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*/
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#define TEST_F TEST_API(TEST_F)
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#define TEST_F_SIGNAL TEST_API(TEST_F_SIGNAL)
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/* Use once to append a main() to the test file. E.g.,
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* TEST_HARNESS_MAIN
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*/
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#define TEST_HARNESS_MAIN TEST_API(TEST_HARNESS_MAIN)
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/*
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* Operators for use in TEST and TEST_F.
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* ASSERT_* calls will stop test execution immediately.
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* EXPECT_* calls will emit a failure warning, note it, and continue.
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*/
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/* ASSERT_EQ(expected, measured): expected == measured */
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#define ASSERT_EQ TEST_API(ASSERT_EQ)
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/* ASSERT_NE(expected, measured): expected != measured */
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#define ASSERT_NE TEST_API(ASSERT_NE)
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/* ASSERT_LT(expected, measured): expected < measured */
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#define ASSERT_LT TEST_API(ASSERT_LT)
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/* ASSERT_LE(expected, measured): expected <= measured */
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#define ASSERT_LE TEST_API(ASSERT_LE)
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/* ASSERT_GT(expected, measured): expected > measured */
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#define ASSERT_GT TEST_API(ASSERT_GT)
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/* ASSERT_GE(expected, measured): expected >= measured */
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#define ASSERT_GE TEST_API(ASSERT_GE)
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/* ASSERT_NULL(measured): NULL == measured */
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#define ASSERT_NULL TEST_API(ASSERT_NULL)
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/* ASSERT_TRUE(measured): measured != 0 */
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#define ASSERT_TRUE TEST_API(ASSERT_TRUE)
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/* ASSERT_FALSE(measured): measured == 0 */
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#define ASSERT_FALSE TEST_API(ASSERT_FALSE)
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/* ASSERT_STREQ(expected, measured): !strcmp(expected, measured) */
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#define ASSERT_STREQ TEST_API(ASSERT_STREQ)
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/* ASSERT_STRNE(expected, measured): strcmp(expected, measured) */
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#define ASSERT_STRNE TEST_API(ASSERT_STRNE)
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/* EXPECT_EQ(expected, measured): expected == measured */
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#define EXPECT_EQ TEST_API(EXPECT_EQ)
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/* EXPECT_NE(expected, measured): expected != measured */
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#define EXPECT_NE TEST_API(EXPECT_NE)
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/* EXPECT_LT(expected, measured): expected < measured */
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#define EXPECT_LT TEST_API(EXPECT_LT)
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/* EXPECT_LE(expected, measured): expected <= measured */
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#define EXPECT_LE TEST_API(EXPECT_LE)
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/* EXPECT_GT(expected, measured): expected > measured */
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#define EXPECT_GT TEST_API(EXPECT_GT)
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/* EXPECT_GE(expected, measured): expected >= measured */
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#define EXPECT_GE TEST_API(EXPECT_GE)
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/* EXPECT_NULL(measured): NULL == measured */
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#define EXPECT_NULL TEST_API(EXPECT_NULL)
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/* EXPECT_TRUE(measured): 0 != measured */
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#define EXPECT_TRUE TEST_API(EXPECT_TRUE)
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/* EXPECT_FALSE(measured): 0 == measured */
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#define EXPECT_FALSE TEST_API(EXPECT_FALSE)
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/* EXPECT_STREQ(expected, measured): !strcmp(expected, measured) */
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#define EXPECT_STREQ TEST_API(EXPECT_STREQ)
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/* EXPECT_STRNE(expected, measured): strcmp(expected, measured) */
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#define EXPECT_STRNE TEST_API(EXPECT_STRNE)
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/* TH_LOG(format, ...)
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* Optional debug logging function available for use in tests.
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* Logging may be enabled or disabled by defining TH_LOG_ENABLED.
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* E.g., #define TH_LOG_ENABLED 1
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* If no definition is provided, logging is enabled by default.
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*/
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#define TH_LOG TEST_API(TH_LOG)
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/*
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* Internal implementation.
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*
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*/
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/* Utilities exposed to the test definitions */
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#ifndef TH_LOG_STREAM
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# define TH_LOG_STREAM stderr
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#endif
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#ifndef TH_LOG_ENABLED
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# define TH_LOG_ENABLED 1
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#endif
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#define _TH_LOG(fmt, ...) do { \
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if (TH_LOG_ENABLED) \
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__TH_LOG(fmt, ##__VA_ARGS__); \
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} while (0)
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/* Unconditional logger for internal use. */
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#define __TH_LOG(fmt, ...) \
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fprintf(TH_LOG_STREAM, "%s:%d:%s:" fmt "\n", \
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__FILE__, __LINE__, _metadata->name, ##__VA_ARGS__)
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/* Defines the test function and creates the registration stub. */
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#define _TEST(test_name) __TEST_IMPL(test_name, -1)
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#define _TEST_SIGNAL(test_name, signal) __TEST_IMPL(test_name, signal)
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#define __TEST_IMPL(test_name, _signal) \
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static void test_name(struct __test_metadata *_metadata); \
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static struct __test_metadata _##test_name##_object = \
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{ name: "global." #test_name, \
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fn: &test_name, termsig: _signal }; \
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static void __attribute__((constructor)) _register_##test_name(void) \
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{ \
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__register_test(&_##test_name##_object); \
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} \
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static void test_name( \
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struct __test_metadata __attribute__((unused)) *_metadata)
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/* Wraps the struct name so we have one less argument to pass around. */
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#define _FIXTURE_DATA(fixture_name) struct _test_data_##fixture_name
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/* Called once per fixture to setup the data and register. */
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#define _FIXTURE(fixture_name) \
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static void __attribute__((constructor)) \
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_register_##fixture_name##_data(void) \
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{ \
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__fixture_count++; \
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} \
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_FIXTURE_DATA(fixture_name)
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/* Prepares the setup function for the fixture. |_metadata| is included
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* so that ASSERT_* work as a convenience.
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*/
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#define _FIXTURE_SETUP(fixture_name) \
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void fixture_name##_setup( \
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struct __test_metadata __attribute__((unused)) *_metadata, \
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_FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
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#define _FIXTURE_TEARDOWN(fixture_name) \
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void fixture_name##_teardown( \
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struct __test_metadata __attribute__((unused)) *_metadata, \
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_FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
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/* Emits test registration and helpers for fixture-based test
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* cases.
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* TODO(wad) register fixtures on dedicated test lists.
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*/
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#define _TEST_F(fixture_name, test_name) \
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__TEST_F_IMPL(fixture_name, test_name, -1)
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#define _TEST_F_SIGNAL(fixture_name, test_name, signal) \
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__TEST_F_IMPL(fixture_name, test_name, signal)
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#define __TEST_F_IMPL(fixture_name, test_name, signal) \
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static void fixture_name##_##test_name( \
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struct __test_metadata *_metadata, \
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_FIXTURE_DATA(fixture_name) *self); \
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static inline void wrapper_##fixture_name##_##test_name( \
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struct __test_metadata *_metadata) \
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{ \
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/* fixture data is alloced, setup, and torn down per call. */ \
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_FIXTURE_DATA(fixture_name) self; \
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memset(&self, 0, sizeof(_FIXTURE_DATA(fixture_name))); \
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fixture_name##_setup(_metadata, &self); \
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/* Let setup failure terminate early. */ \
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if (!_metadata->passed) \
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return; \
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fixture_name##_##test_name(_metadata, &self); \
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fixture_name##_teardown(_metadata, &self); \
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} \
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static struct __test_metadata \
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_##fixture_name##_##test_name##_object = { \
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name: #fixture_name "." #test_name, \
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fn: &wrapper_##fixture_name##_##test_name, \
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termsig: signal, \
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}; \
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static void __attribute__((constructor)) \
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_register_##fixture_name##_##test_name(void) \
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{ \
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__register_test(&_##fixture_name##_##test_name##_object); \
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} \
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static void fixture_name##_##test_name( \
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struct __test_metadata __attribute__((unused)) *_metadata, \
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_FIXTURE_DATA(fixture_name) __attribute__((unused)) *self)
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/* Exports a simple wrapper to run the test harness. */
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#define _TEST_HARNESS_MAIN \
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static void __attribute__((constructor)) \
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__constructor_order_last(void) \
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{ \
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if (!__constructor_order) \
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__constructor_order = _CONSTRUCTOR_ORDER_BACKWARD; \
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} \
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int main(int argc, char **argv) { \
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return test_harness_run(argc, argv); \
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}
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#define _ASSERT_EQ(_expected, _seen) \
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__EXPECT(_expected, _seen, ==, 1)
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#define _ASSERT_NE(_expected, _seen) \
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__EXPECT(_expected, _seen, !=, 1)
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#define _ASSERT_LT(_expected, _seen) \
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__EXPECT(_expected, _seen, <, 1)
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#define _ASSERT_LE(_expected, _seen) \
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__EXPECT(_expected, _seen, <=, 1)
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#define _ASSERT_GT(_expected, _seen) \
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__EXPECT(_expected, _seen, >, 1)
|
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#define _ASSERT_GE(_expected, _seen) \
|
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__EXPECT(_expected, _seen, >=, 1)
|
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#define _ASSERT_NULL(_seen) \
|
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__EXPECT(NULL, _seen, ==, 1)
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|
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#define _ASSERT_TRUE(_seen) \
|
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_ASSERT_NE(0, _seen)
|
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#define _ASSERT_FALSE(_seen) \
|
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_ASSERT_EQ(0, _seen)
|
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#define _ASSERT_STREQ(_expected, _seen) \
|
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__EXPECT_STR(_expected, _seen, ==, 1)
|
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#define _ASSERT_STRNE(_expected, _seen) \
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__EXPECT_STR(_expected, _seen, !=, 1)
|
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|
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#define _EXPECT_EQ(_expected, _seen) \
|
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__EXPECT(_expected, _seen, ==, 0)
|
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#define _EXPECT_NE(_expected, _seen) \
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__EXPECT(_expected, _seen, !=, 0)
|
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#define _EXPECT_LT(_expected, _seen) \
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__EXPECT(_expected, _seen, <, 0)
|
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#define _EXPECT_LE(_expected, _seen) \
|
||||
__EXPECT(_expected, _seen, <=, 0)
|
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#define _EXPECT_GT(_expected, _seen) \
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__EXPECT(_expected, _seen, >, 0)
|
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#define _EXPECT_GE(_expected, _seen) \
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__EXPECT(_expected, _seen, >=, 0)
|
||||
|
||||
#define _EXPECT_NULL(_seen) \
|
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__EXPECT(NULL, _seen, ==, 0)
|
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#define _EXPECT_TRUE(_seen) \
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_EXPECT_NE(0, _seen)
|
||||
#define _EXPECT_FALSE(_seen) \
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_EXPECT_EQ(0, _seen)
|
||||
|
||||
#define _EXPECT_STREQ(_expected, _seen) \
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__EXPECT_STR(_expected, _seen, ==, 0)
|
||||
#define _EXPECT_STRNE(_expected, _seen) \
|
||||
__EXPECT_STR(_expected, _seen, !=, 0)
|
||||
|
||||
#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
|
||||
|
||||
/* Support an optional handler after and ASSERT_* or EXPECT_*. The approach is
|
||||
* not thread-safe, but it should be fine in most sane test scenarios.
|
||||
*
|
||||
* Using __bail(), which optionally abort()s, is the easiest way to early
|
||||
* return while still providing an optional block to the API consumer.
|
||||
*/
|
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#define OPTIONAL_HANDLER(_assert) \
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for (; _metadata->trigger; _metadata->trigger = __bail(_assert))
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||||
|
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#define __EXPECT(_expected, _seen, _t, _assert) do { \
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/* Avoid multiple evaluation of the cases */ \
|
||||
__typeof__(_expected) __exp = (_expected); \
|
||||
__typeof__(_seen) __seen = (_seen); \
|
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if (!(__exp _t __seen)) { \
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unsigned long long __exp_print = 0; \
|
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unsigned long long __seen_print = 0; \
|
||||
/* Avoid casting complaints the scariest way we can. */ \
|
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memcpy(&__exp_print, &__exp, sizeof(__exp)); \
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memcpy(&__seen_print, &__seen, sizeof(__seen)); \
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__TH_LOG("Expected %s (%llu) %s %s (%llu)", \
|
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#_expected, __exp_print, #_t, \
|
||||
#_seen, __seen_print); \
|
||||
_metadata->passed = 0; \
|
||||
/* Ensure the optional handler is triggered */ \
|
||||
_metadata->trigger = 1; \
|
||||
} \
|
||||
} while (0); OPTIONAL_HANDLER(_assert)
|
||||
|
||||
#define __EXPECT_STR(_expected, _seen, _t, _assert) do { \
|
||||
const char *__exp = (_expected); \
|
||||
const char *__seen = (_seen); \
|
||||
if (!(strcmp(__exp, __seen) _t 0)) { \
|
||||
__TH_LOG("Expected '%s' %s '%s'.", __exp, #_t, __seen); \
|
||||
_metadata->passed = 0; \
|
||||
_metadata->trigger = 1; \
|
||||
} \
|
||||
} while (0); OPTIONAL_HANDLER(_assert)
|
||||
|
||||
/* Contains all the information for test execution and status checking. */
|
||||
struct __test_metadata {
|
||||
const char *name;
|
||||
void (*fn)(struct __test_metadata *);
|
||||
int termsig;
|
||||
int passed;
|
||||
int trigger; /* extra handler after the evaluation */
|
||||
struct __test_metadata *prev, *next;
|
||||
};
|
||||
|
||||
/* Storage for the (global) tests to be run. */
|
||||
static struct __test_metadata *__test_list;
|
||||
static unsigned int __test_count;
|
||||
static unsigned int __fixture_count;
|
||||
static int __constructor_order;
|
||||
|
||||
#define _CONSTRUCTOR_ORDER_FORWARD 1
|
||||
#define _CONSTRUCTOR_ORDER_BACKWARD -1
|
||||
|
||||
/*
|
||||
* Since constructors are called in reverse order, reverse the test
|
||||
* list so tests are run in source declaration order.
|
||||
* https://gcc.gnu.org/onlinedocs/gccint/Initialization.html
|
||||
* However, it seems not all toolchains do this correctly, so use
|
||||
* __constructor_order to detect which direction is called first
|
||||
* and adjust list building logic to get things running in the right
|
||||
* direction.
|
||||
*/
|
||||
static inline void __register_test(struct __test_metadata *t)
|
||||
{
|
||||
__test_count++;
|
||||
/* Circular linked list where only prev is circular. */
|
||||
if (__test_list == NULL) {
|
||||
__test_list = t;
|
||||
t->next = NULL;
|
||||
t->prev = t;
|
||||
return;
|
||||
}
|
||||
if (__constructor_order == _CONSTRUCTOR_ORDER_FORWARD) {
|
||||
t->next = NULL;
|
||||
t->prev = __test_list->prev;
|
||||
t->prev->next = t;
|
||||
__test_list->prev = t;
|
||||
} else {
|
||||
t->next = __test_list;
|
||||
t->next->prev = t;
|
||||
t->prev = t;
|
||||
__test_list = t;
|
||||
}
|
||||
}
|
||||
|
||||
static inline int __bail(int for_realz)
|
||||
{
|
||||
if (for_realz)
|
||||
abort();
|
||||
return 0;
|
||||
}
|
||||
|
||||
void __run_test(struct __test_metadata *t)
|
||||
{
|
||||
pid_t child_pid;
|
||||
int status;
|
||||
|
||||
t->passed = 1;
|
||||
t->trigger = 0;
|
||||
printf("[ RUN ] %s\n", t->name);
|
||||
child_pid = fork();
|
||||
if (child_pid < 0) {
|
||||
printf("ERROR SPAWNING TEST CHILD\n");
|
||||
t->passed = 0;
|
||||
} else if (child_pid == 0) {
|
||||
t->fn(t);
|
||||
_exit(t->passed);
|
||||
} else {
|
||||
/* TODO(wad) add timeout support. */
|
||||
waitpid(child_pid, &status, 0);
|
||||
if (WIFEXITED(status)) {
|
||||
t->passed = t->termsig == -1 ? WEXITSTATUS(status) : 0;
|
||||
if (t->termsig != -1) {
|
||||
fprintf(TH_LOG_STREAM,
|
||||
"%s: Test exited normally "
|
||||
"instead of by signal (code: %d)\n",
|
||||
t->name,
|
||||
WEXITSTATUS(status));
|
||||
}
|
||||
} else if (WIFSIGNALED(status)) {
|
||||
t->passed = 0;
|
||||
if (WTERMSIG(status) == SIGABRT) {
|
||||
fprintf(TH_LOG_STREAM,
|
||||
"%s: Test terminated by assertion\n",
|
||||
t->name);
|
||||
} else if (WTERMSIG(status) == t->termsig) {
|
||||
t->passed = 1;
|
||||
} else {
|
||||
fprintf(TH_LOG_STREAM,
|
||||
"%s: Test terminated unexpectedly "
|
||||
"by signal %d\n",
|
||||
t->name,
|
||||
WTERMSIG(status));
|
||||
}
|
||||
} else {
|
||||
fprintf(TH_LOG_STREAM,
|
||||
"%s: Test ended in some other way [%u]\n",
|
||||
t->name,
|
||||
status);
|
||||
}
|
||||
}
|
||||
printf("[ %4s ] %s\n", (t->passed ? "OK" : "FAIL"), t->name);
|
||||
}
|
||||
|
||||
static int test_harness_run(int __attribute__((unused)) argc,
|
||||
char __attribute__((unused)) **argv)
|
||||
{
|
||||
struct __test_metadata *t;
|
||||
int ret = 0;
|
||||
unsigned int count = 0;
|
||||
unsigned int pass_count = 0;
|
||||
|
||||
/* TODO(wad) add optional arguments similar to gtest. */
|
||||
printf("[==========] Running %u tests from %u test cases.\n",
|
||||
__test_count, __fixture_count + 1);
|
||||
for (t = __test_list; t; t = t->next) {
|
||||
count++;
|
||||
__run_test(t);
|
||||
if (t->passed)
|
||||
pass_count++;
|
||||
else
|
||||
ret = 1;
|
||||
}
|
||||
printf("[==========] %u / %u tests passed.\n", pass_count, count);
|
||||
printf("[ %s ]\n", (ret ? "FAILED" : "PASSED"));
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void __attribute__((constructor)) __constructor_order_first(void)
|
||||
{
|
||||
if (!__constructor_order)
|
||||
__constructor_order = _CONSTRUCTOR_ORDER_FORWARD;
|
||||
}
|
||||
|
||||
#endif /* TEST_HARNESS_H_ */
|
||||
Loading…
Reference in New Issue
Block a user