68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
//===-- interception_linux_test.cc ----------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
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// Tests for interception_linux.h.
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//
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//===----------------------------------------------------------------------===//
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// Do not declare isdigit in ctype.h.
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#define __NO_CTYPE
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#include "interception/interception.h"
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#include "gtest/gtest.h"
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// Too slow for debug build
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#if !SANITIZER_DEBUG
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#if SANITIZER_LINUX
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static int InterceptorFunctionCalled;
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DECLARE_REAL(int, isdigit, int);
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INTERCEPTOR(int, isdigit, int d) {
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++InterceptorFunctionCalled;
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return d >= '0' && d <= '9';
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}
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namespace __interception {
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TEST(Interception, InterceptFunction) {
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uptr malloc_address = 0;
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EXPECT_TRUE(InterceptFunction("malloc", &malloc_address, 0, 0));
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EXPECT_NE(0U, malloc_address);
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EXPECT_FALSE(InterceptFunction("malloc", &malloc_address, 0, 1));
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uptr dummy_address = 0;
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EXPECT_FALSE(InterceptFunction("dummy_doesnt_exist__", &dummy_address, 0, 0));
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EXPECT_EQ(0U, dummy_address);
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}
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TEST(Interception, Basic) {
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EXPECT_TRUE(INTERCEPT_FUNCTION(isdigit));
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// After interception, the counter should be incremented.
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InterceptorFunctionCalled = 0;
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EXPECT_NE(0, isdigit('1'));
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EXPECT_EQ(1, InterceptorFunctionCalled);
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EXPECT_EQ(0, isdigit('a'));
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EXPECT_EQ(2, InterceptorFunctionCalled);
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// Calling the REAL function should not affect the counter.
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InterceptorFunctionCalled = 0;
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EXPECT_NE(0, REAL(isdigit)('1'));
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EXPECT_EQ(0, REAL(isdigit)('a'));
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EXPECT_EQ(0, InterceptorFunctionCalled);
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}
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} // namespace __interception
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#endif // SANITIZER_LINUX
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#endif // #if !SANITIZER_DEBUG
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