Function TestUnescape

escape_test.go:172–215

Verifies: SYS-REQ-014 [malformed] MCDC SYS-REQ-014: N/A

(t *testing.T)

// Verifies: SYS-REQ-014 [malformed]
// MCDC SYS-REQ-014: N/A
func TestUnescape(t *testing.T) {
	for _, test := range unescapeTests {
		type bufferTestCase struct {
			buf        []byte
			isTooSmall bool
		}

		var bufs []bufferTestCase

		if len(test.in) == 0 {
			// If the input string is length 0, only a buffer of size 0 is a meaningful test
			bufs = []bufferTestCase{{nil, false}}
		} else {
			// For non-empty input strings, we can try several buffer sizes (0, len-1, len)
			bufs = []bufferTestCase{
				{nil, true},
				{make([]byte, 0, len(test.in)-1), true},
				{make([]byte, 0, len(test.in)), false},
			}
		}

		for _, buftest := range bufs {
			in := []byte(test.in)
			buf := buftest.buf

			out, err := Unescape(in, buf)
			isErr := (err != nil)
			isAlloc := !isSameMemory(out, in) && !isSameMemory(out, buf)

			if isErr != test.isErr {
				t.Errorf("Unescape(`%s`, bufsize=%d) returned isErr mismatch: expected %t, obtained %t", test.in, cap(buf), test.isErr, isErr)
				break
			} else if isErr {
				continue
			} else if !bytes.Equal(out, []byte(test.out)) {
				t.Errorf("Unescape(`%s`, bufsize=%d) returned unescaped mismatch: expected `%s` (%v, len %d), obtained `%s` (%v, len %d)", test.in, cap(buf), test.out, []byte(test.out), len(test.out), string(out), out, len(out))
				break
			} else if isAlloc != (test.canAlloc && buftest.isTooSmall) {
				t.Errorf("Unescape(`%s`, bufsize=%d) returned isAlloc mismatch: expected %t, obtained %t", test.in, cap(buf), buftest.isTooSmall, isAlloc)
				break
			}
		}
	}
}

// =============================================================================
// Lone-Unicode-surrogate regression tests (DEFECT-260727-SNGT).