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Overflow/underflow tests

This commit is contained in:
Patrick Mylund Nielsen 2012-01-04 10:48:21 +01:00
parent 51add1d44d
commit e5b84e20fc
1 changed files with 43 additions and 0 deletions
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43
cache_test.go
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@ -409,6 +409,49 @@ func TestFlush(t *testing.T) {
} }
} }
func TestIncrementOverflowInt(t *testing.T) {
tc := New(0, 0)
tc.Set("int8", int8(127), 0)
err := tc.Increment("int8", 1)
if err != nil {
t.Error("Error incrementing int8: %s", err)
}
x, _ := tc.Get("int8")
int8 := x.(int8)
if int8 != -128 {
t.Error("int8 did not overflow as expected; value: %d", int8)
}
}
func TestIncrementOverflowUint(t *testing.T) {
tc := New(0, 0)
tc.Set("uint8", uint8(255), 0)
err := tc.Increment("uint8", 1)
if err != nil {
t.Error("Error incrementing int8: %s", err)
}
x, _ := tc.Get("uint8")
uint8 := x.(uint8)
if uint8 != 0 {
t.Error("uint8 did not overflow as expected; value: %d", uint8)
}
}
func TestDecrementUnderflowUint(t *testing.T) {
tc := New(0, 0)
tc.Set("uint8", uint8(0), 0)
err := tc.Decrement("uint8", 1)
if err != nil {
t.Error("Error decrementing int8: %s", err)
}
x, _ := tc.Get("uint8")
uint8 := x.(uint8)
if uint8 != 255 {
t.Error("uint8 did not underflow as expected; value: %d", uint8)
}
}
func BenchmarkCacheGet(b *testing.B) { func BenchmarkCacheGet(b *testing.B) {
tc := New(0, 0) tc := New(0, 0)
tc.Set("foo", "bar", 0) tc.Set("foo", "bar", 0)