35 lines
1.1 KiB
C++
35 lines
1.1 KiB
C++
#include "pisharedmemory.h"
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#include "gtest/gtest.h"
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#ifdef WINDOWS
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# include <process.h>
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#else
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# include <unistd.h>
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#endif
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TEST(PISharedMemory_Test, ReadWriteBounds) {
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PISharedMemory shm("pip_bughunt_shm_bounds_" + PIString::fromNumber(int(getpid())), 64);
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ASSERT_TRUE(shm.open());
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const char payload[32] = "0123456789abcdef";
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ASSERT_EQ(32, shm.write(payload, 32));
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ASSERT_EQ(16, shm.write(payload, 16, 10));
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// Out-of-bounds writes must be rejected, not silently overflow the mapping.
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EXPECT_EQ(-1, shm.write(payload, 100)); // exceeds size
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EXPECT_EQ(-1, shm.write(payload, 32, 97)); // offset + size exceeds size
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EXPECT_EQ(-1, shm.write(payload, 16, -5)); // negative offset
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// Out-of-bounds reads must be rejected.
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char dst[128];
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EXPECT_EQ(-1, shm.read(dst, 200)); // exceeds size
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EXPECT_EQ(-1, shm.read(dst, 32, 97)); // offset + size exceeds size
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EXPECT_EQ(-1, shm.read(dst, 32, -1));
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// In-bounds reads must still succeed.
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EXPECT_EQ(16, shm.read(dst, 16, 10));
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ASSERT_EQ(0, memcmp(dst, "0123456789abcdef", 16));
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ASSERT_TRUE(shm.close());
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} |