diff options
Diffstat (limited to 'src/strings/compare_test.go')
| -rw-r--r-- | src/strings/compare_test.go | 26 |
1 files changed, 20 insertions, 6 deletions
diff --git a/src/strings/compare_test.go b/src/strings/compare_test.go index bc12e421b0..5d5334461c 100644 --- a/src/strings/compare_test.go +++ b/src/strings/compare_test.go @@ -8,6 +8,7 @@ package strings_test // Benchmarks omitted since the underlying implementation is identical. import ( + "internal/testenv" . "strings" "testing" ) @@ -52,10 +53,21 @@ func TestCompareIdenticalString(t *testing.T) { } func TestCompareStrings(t *testing.T) { - n := 128 + lengths := make([]int, 0) // lengths to test in ascending order + for i := 0; i <= 128; i++ { + lengths = append(lengths, i) + } + lengths = append(lengths, 256, 512, 1024, 1333, 4095, 4096, 4097) + + if !testing.Short() || testenv.Builder() != "" { + lengths = append(lengths, 65535, 65536, 65537, 99999) + } + + n := lengths[len(lengths)-1] a := make([]byte, n+1) b := make([]byte, n+1) - for len := 0; len < 128; len++ { + lastLen := 0 + for _, len := range lengths { // randomish but deterministic data. No 0 or 255. for i := 0; i < len; i++ { a[i] = byte(1 + 31*i%254) @@ -67,21 +79,22 @@ func TestCompareStrings(t *testing.T) { b[i] = 9 } - cmp := Compare(string(a[:len]), string(b[:len])) + sa, sb := string(a), string(b) + cmp := Compare(sa[:len], sb[:len]) if cmp != 0 { t.Errorf(`CompareIdentical(%d) = %d`, len, cmp) } if len > 0 { - cmp = Compare(string(a[:len-1]), string(b[:len])) + cmp = Compare(sa[:len-1], sb[:len]) if cmp != -1 { t.Errorf(`CompareAshorter(%d) = %d`, len, cmp) } - cmp = Compare(string(a[:len]), string(b[:len-1])) + cmp = Compare(sa[:len], sb[:len-1]) if cmp != 1 { t.Errorf(`CompareBshorter(%d) = %d`, len, cmp) } } - for k := 0; k < len; k++ { + for k := lastLen; k < len; k++ { b[k] = a[k] - 1 cmp = Compare(string(a[:len]), string(b[:len])) if cmp != 1 { @@ -94,5 +107,6 @@ func TestCompareStrings(t *testing.T) { } b[k] = a[k] } + lastLen = len } } |