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//===-- interception_linux_test.cc ----------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file is a part of ThreadSanitizer/AddressSanitizer runtime.
// Tests for interception_linux.h.
//
//===----------------------------------------------------------------------===//
// Do not declare isdigit in ctype.h.
#define __NO_CTYPE
#include "interception/interception.h"
#include "gtest/gtest.h"
// Too slow for debug build
#if !SANITIZER_DEBUG
#if SANITIZER_LINUX
static int InterceptorFunctionCalled;
DECLARE_REAL(int, isdigit, int);
INTERCEPTOR(int, isdigit, int d) {
++InterceptorFunctionCalled;
return d >= '0' && d <= '9';
}
namespace __interception {
TEST(Interception, GetRealFunctionAddress) {
uptr malloc_address = 0;
EXPECT_TRUE(GetRealFunctionAddress("malloc", &malloc_address, 0, 0));
EXPECT_NE(0U, malloc_address);
uptr dummy_address = 0;
EXPECT_TRUE(
GetRealFunctionAddress("dummy_doesnt_exist__", &dummy_address, 0, 0));
EXPECT_EQ(0U, dummy_address);
}
TEST(Interception, Basic) {
ASSERT_TRUE(INTERCEPT_FUNCTION(isdigit));
// After interception, the counter should be incremented.
InterceptorFunctionCalled = 0;
EXPECT_NE(0, isdigit('1'));
EXPECT_EQ(1, InterceptorFunctionCalled);
EXPECT_EQ(0, isdigit('a'));
EXPECT_EQ(2, InterceptorFunctionCalled);
// Calling the REAL function should not affect the counter.
InterceptorFunctionCalled = 0;
EXPECT_NE(0, REAL(isdigit)('1'));
EXPECT_EQ(0, REAL(isdigit)('a'));
EXPECT_EQ(0, InterceptorFunctionCalled);
}
} // namespace __interception
#endif // SANITIZER_LINUX
#endif // #if !SANITIZER_DEBUG
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