Function FuzzSplitStdlib

fuzz_stdlib_test.go:579–652

=========================================================================== FuzzSplitStdlib - Fuzz Split ===========================================================================

(f *testing.F)

// ===========================================================================

func FuzzSplitStdlib(f *testing.F) {
	// Add seed corpus
	splitPatterns := []string{
		`,`,
		`:`,
		`\s+`,
		`\d+`,
		`[,;]+`,
		`-`,
		`\.`,
		``,
	}

	splitInputs := []string{
		"a,b,c",
		"foo:bar:baz",
		"hello world test",
		"1a2b3c",
		"a;b,c;d",
		"a-b-c-d",
		"a.b.c",
		"",
		"abc",
		"no delimiter here",
	}

	for _, p := range splitPatterns {
		for _, i := range splitInputs {
			f.Add(p, i)
		}
	}

	f.Fuzz(func(t *testing.T, pattern, input string) {
		// Skip known differences: empty pattern split behavior
		if isEmptyPatternCase(pattern) {
			return
		}

		// Skip invalid patterns
		stdRe, err := regexp.Compile(pattern)
		if err != nil {
			return
		}

		cgRe, err := Compile(pattern)
		if err != nil {
			t.Fatalf("coregex failed to compile valid pattern %q: %v", pattern, err)
		}

		// Compare Split with n=-1 (all splits)
		stdSplit := stdRe.Split(input, -1)
		cgSplit := cgRe.Split(input, -1)
		if !reflect.DeepEqual(stdSplit, cgSplit) {
			t.Errorf("Split(%q, %q, -1):\n  stdlib: %v\n  coregex: %v",
				pattern, input, stdSplit, cgSplit)
		}

		// Compare Split with n=2 (limited)