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AK+Tests: Test Checked for main functionality

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This commit is contained in:
Ben Wiederhake 2021-02-21 22:09:25 +01:00 • committed by Andreas Kling
parent 6f668ca3a4
commit 90c070cb1d
1 changed files with 23 additions and 0 deletions
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23
AK/Tests/TestChecked.cpp
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@ -95,6 +95,29 @@ TEST_CASE(operator_arith)
EXPECT_EQ(b / a, 28); EXPECT_EQ(b / a, 28);
} }
TEST_CASE(detects_signed_overflow)
{
EXPECT(!(Checked<int>(0x40000000) + Checked<int>(0x3fffffff)).has_overflow());
EXPECT((Checked<int>(0x40000000) + Checked<int>(0x40000000)).has_overflow());
EXPECT(!(Checked<int>(-0x40000000) + Checked<int>(-0x40000000)).has_overflow());
EXPECT((Checked<int>(-0x40000001) + Checked<int>(-0x40000000)).has_overflow());
EXPECT(!(Checked<int>(0x40000000) - Checked<int>(-0x3fffffff)).has_overflow());
EXPECT((Checked<int>(0x40000000) - Checked<int>(-0x40000000)).has_overflow());
EXPECT(!(Checked<int>(-0x40000000) - Checked<int>(0x40000000)).has_overflow());
EXPECT((Checked<int>(-0x40000000) - Checked<int>(0x40000001)).has_overflow());
EXPECT(!(Checked<i64>(0x4000000000000000) + Checked<i64>(0x3fffffffffffffff)).has_overflow());
EXPECT((Checked<i64>(0x4000000000000000) + Checked<i64>(0x4000000000000000)).has_overflow());
EXPECT(!(Checked<i64>(-0x4000000000000000) + Checked<i64>(-0x4000000000000000)).has_overflow());
EXPECT((Checked<i64>(-0x4000000000000001) + Checked<i64>(-0x4000000000000000)).has_overflow());
EXPECT(!(Checked<i64>(0x4000000000000000) - Checked<i64>(-0x3fffffffffffffff)).has_overflow());
EXPECT((Checked<i64>(0x4000000000000000) - Checked<i64>(-0x4000000000000000)).has_overflow());
EXPECT(!(Checked<i64>(-0x4000000000000000) - Checked<i64>(0x4000000000000000)).has_overflow());
EXPECT((Checked<i64>(-0x4000000000000000) - Checked<i64>(0x4000000000000001)).has_overflow());
}
TEST_CASE(should_constexpr_default_construct) TEST_CASE(should_constexpr_default_construct)
{ {
constexpr Checked<int> checked_value {}; constexpr Checked<int> checked_value {};