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Adds a Random class to support --gtest_shuffle (by Josh Kelley); Makes the scons script build in a deterministic order (by Zhanyong Wan).

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This commit is contained in:
zhanyong.wan
2009-09-21 19:42:03 +00:00
parent e5373af0cb
commit 2534ae201e
4 changed files with 86 additions and 6 deletions
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44
test/gtest_unittest.cc
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@@ -183,6 +183,7 @@ using testing::internal::TestProperty;
using testing::internal::TestResult;
using testing::internal::TestResultAccessor;
using testing::internal::ThreadLocal;
using testing::internal::UInt32;
using testing::internal::Vector;
using testing::internal::WideStringToUtf8;
using testing::internal::kTestTypeIdInGoogleTest;
@@ -499,6 +500,49 @@ TEST(WideStringToUtf8Test, ConcatenatesCodepointsCorrectly) {
}
#endif // !GTEST_WIDE_STRING_USES_UTF16_
// Tests the Random class.
TEST(RandomDeathTest, GeneratesCrashesOnInvalidRange) {
testing::internal::Random random(42);
EXPECT_DEATH_IF_SUPPORTED(
random.Generate(0),
"Cannot generate a number in the range \\[0, 0\\)");
EXPECT_DEATH_IF_SUPPORTED(
random.Generate(testing::internal::Random::kMaxRange + 1),
"Generation of a number in \\[0, 2147483649\\) was requested, "
"but this can only generate numbers in \\[0, 2147483648\\)");
}
TEST(RandomTest, GeneratesNumbersWithinRange) {
const UInt32 kRange = 10000;
testing::internal::Random random(12345);
for (int i = 0; i < 10; i++) {
EXPECT_LT(random.Generate(kRange), kRange) << " for iteration " << i;
}
testing::internal::Random random2(testing::internal::Random::kMaxRange);
for (int i = 0; i < 10; i++) {
EXPECT_LT(random2.Generate(kRange), kRange) << " for iteration " << i;
}
}
TEST(RandomTest, RepeatsWhenReseeded) {
const int kSeed = 123;
const int kArraySize = 10;
const UInt32 kRange = 10000;
UInt32 values[kArraySize];
testing::internal::Random random(kSeed);
for (int i = 0; i < kArraySize; i++) {
values[i] = random.Generate(kRange);
}
random.Reseed(kSeed);
for (int i = 0; i < kArraySize; i++) {
EXPECT_EQ(values[i], random.Generate(kRange)) << " for iteration " << i;
}
}
// Tests the Vector class template.
// Tests Vector::Clear().