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path: root/libgo/go/bytes/compare_test.go
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Diffstat (limited to 'libgo/go/bytes/compare_test.go')
-rw-r--r--libgo/go/bytes/compare_test.go13
1 files changed, 10 insertions, 3 deletions
diff --git a/libgo/go/bytes/compare_test.go b/libgo/go/bytes/compare_test.go
index 3e33c27c9c9..a321f2e0861 100644
--- a/libgo/go/bytes/compare_test.go
+++ b/libgo/go/bytes/compare_test.go
@@ -41,9 +41,16 @@ var compareTests = []struct {
func TestCompare(t *testing.T) {
for _, tt := range compareTests {
- cmp := Compare(tt.a, tt.b)
- if cmp != tt.i {
- t.Errorf(`Compare(%q, %q) = %v`, tt.a, tt.b, cmp)
+ numShifts := 16
+ buffer := make([]byte, len(tt.b)+numShifts)
+ // vary the input alignment of tt.b
+ for offset := 0; offset <= numShifts; offset++ {
+ shiftedB := buffer[offset : len(tt.b)+offset]
+ copy(shiftedB, tt.b)
+ cmp := Compare(tt.a, shiftedB)
+ if cmp != tt.i {
+ t.Errorf(`Compare(%q, %q), offset %d = %v; want %v`, tt.a, tt.b, offset, cmp, tt.i)
+ }
}
}
}