libcryfs/test/cpp-utils/data/DataFixtureTest.cpp

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#include <gtest/gtest.h>
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#include "cpp-utils/data/Data.h"
#include "cpp-utils/data/DataFixture.h"
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using ::testing::Test;
using namespace cpputils;
class DataFixtureTest: public Test {
};
TEST_F(DataFixtureTest, CreateEmptyFixture) {
Data data = DataFixture::generate(0);
EXPECT_EQ(0u, data.size());
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}
TEST_F(DataFixtureTest, CreateOneByteFixture) {
Data data = DataFixture::generate(1);
EXPECT_EQ(1u, data.size());
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}
TEST_F(DataFixtureTest, CreateLargerFixture) {
Data data = DataFixture::generate(20 * 1024 * 1024);
EXPECT_EQ(20u * 1024u * 1024u, data.size());
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}
TEST_F(DataFixtureTest, FixturesAreDeterministic_DefaultSeed) {
Data data1 = DataFixture::generate(1024 * 1024);
Data data2 = DataFixture::generate(1024 * 1024);
EXPECT_EQ(data1, data2);
}
TEST_F(DataFixtureTest, FixturesAreDeterministic_SeedIs5) {
Data data1 = DataFixture::generate(1024 * 1024, 5);
Data data2 = DataFixture::generate(1024 * 1024, 5);
EXPECT_EQ(data1, data2);
}
TEST_F(DataFixtureTest, DifferentSeedIsDifferentFixture) {
Data data1 = DataFixture::generate(1024 * 1024, 0);
Data data2 = DataFixture::generate(1024 * 1024, 1);
EXPECT_NE(data1, data2);
}
TEST_F(DataFixtureTest, FixturesAreDeterministic_DifferentSize_DefaultSeed_1) {
Data data1 = DataFixture::generate(1024);
Data data2 = DataFixture::generate(1);
EXPECT_EQ(0, std::memcmp(data1.data(), data2.data(), 1));
}
TEST_F(DataFixtureTest, FixturesAreDeterministic_DifferentSize_DefaultSeed_2) {
Data data1 = DataFixture::generate(1024);
Data data2 = DataFixture::generate(501); //Intentionally not 64bit-aligned, because the generate() function generates 64bit values for performance
EXPECT_EQ(0, std::memcmp(data1.data(), data2.data(), 501));
}
TEST_F(DataFixtureTest, FixturesAreDeterministic_DifferentSize_SeedIs5_1) {
Data data1 = DataFixture::generate(1024, 5);
Data data2 = DataFixture::generate(1, 5);
EXPECT_EQ(0, std::memcmp(data1.data(), data2.data(), 1));
}
TEST_F(DataFixtureTest, FixturesAreDeterministic_DifferentSize_SeedIs5_2) {
Data data1 = DataFixture::generate(1024, 5);
Data data2 = DataFixture::generate(501, 5); //Intentionally not 64bit-aligned, because the generate() function generates 64bit values for performance
EXPECT_EQ(0, std::memcmp(data1.data(), data2.data(), 501));
}