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Side by Side Diff: sandbox/linux/tests/unit_tests.h

Issue 10878033: Simplified unit testing of sandboxing code. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src
Patch Set: Add missing parameter that suppresses benign error messages Created 8 years, 3 months ago
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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #ifndef SANDBOX_LINUX_TESTS_UNIT_TESTS_H__
6 #define SANDBOX_LINUX_TESTS_UNIT_TESTS_H__
7
8 #include "base/basictypes.h"
9 #include "testing/gtest/include/gtest/gtest.h"
10
11 namespace sandbox {
12
13 // Define a new test case that runs inside of a death test. This is necessary,
14 // as most of our tests by definition make global and irreversible changes to
15 // the system (i.e. they install a sandbox). GTest provides death tests as a
16 // tool to isolate global changes from the rest of the tests.
17 #define SANDBOX_TEST(test_case_name, test_name) \
18 void TEST_##test_name(void *); \
19 TEST(test_case_name, test_name) { \
20 sandbox::UnitTests::RunTestInProcess(TEST_##test_name, NULL); \
21 } \
22 void TEST_##test_name(void *)
23
24 // Simple assertion macro that is compatible with running inside of a death
25 // test. We unfortunately cannot use any of the GTest macros.
26 #define SANDBOX_STR(x) #x
27 #define SANDBOX_ASSERT(expr) \
28 ((expr) \
29 ? static_cast<void>(0) \
30 : sandbox::UnitTests::AssertionFailure(SANDBOX_STR(expr), \
31 __FILE__, __LINE__))
32
33 class UnitTests {
34 public:
35 typedef void (*Test)(void *);
36
37 // Runs a test inside a short-lived process. Do not call this function
38 // directly. It is automatically invoked by SANDBOX_TEST(). Most sandboxing
39 // functions make global irreversible changes to the execution environment
40 // and must therefore execute in their own isolated process.
41 static void RunTestInProcess(Test test, void *arg);
42
43 // Report a useful error message and terminate the current SANDBOX_TEST().
44 // Calling this function from outside a SANDBOX_TEST() is unlikely to do
45 // anything useful.
46 static void AssertionFailure(const char *expr, const char *file, int line);
47
48 private:
49 DISALLOW_IMPLICIT_CONSTRUCTORS(UnitTests);
50 };
51
52 } // namespace
53
54 #endif // SANDBOX_LINUX_TESTS_UNIT_TESTS_H__
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