Function TestTranslateYAMLError

pkg/parser/yaml_error_test.go:163–241

TestTranslateYAMLError tests that cryptic goccy/go-yaml parser messages are translated to user-friendly descriptions, and that source context lines are left untouched.

(t *testing.T)

// TestTranslateYAMLError tests that cryptic goccy/go-yaml parser messages are translated
// to user-friendly descriptions, and that source context lines are left untouched.
func TestTranslateYAMLError(t *testing.T) {
	tests := []struct {
		name               string
		input              string
		contains           string // expected substring in translated output
		excludes           string // must NOT appear in the first (header) line
		sourceContextCheck string // if non-empty, must appear in the source context (after first line)
	}{
		{
			name:     "unexpected key name translated",
			input:    "[1:1] unexpected key name\n>  1 | engine claude\n       ^",
			contains: "missing ':' after key",
			excludes: "unexpected key name",
		},
		{
			name:     "mapping value not allowed translated",
			input:    "[1:6] mapping value is not allowed in this context\n>  1 | key: value: extra\n            ^",
			contains: "unexpected ':'",
			excludes: "mapping value is not allowed in this context",
		},
		{
			name:     "mapping value not found translated",
			input:    "[3:1] yaml: mapping value not found\n>  3 | engine copiilot\n       ^",
			contains: "missing ':' after key",
			excludes: "mapping value not found",
		},
		{
			name:     "string used where mapping expected translated",
			input:    "[1:1] string was used where mapping is expected\n>  1 | name value\n       ^",
			contains: "expected a YAML mapping",
			excludes: "string was used where mapping is expected",
		},
		{
			name:     "tab character error translated",
			input:    "[1:7] tab character cannot use as a map key directly\n>  1 | \tengine: claude\n             ^",
			contains: "tab character in key",
			excludes: "tab character cannot use as a map key directly",
		},
		{
			name:     "unrecognized messages are returned unchanged",
			input:    "[2:1] mapping key \"name\" already defined at [1:1]\n>  2 | name: dup\n       ^",
			contains: "already defined",
		},
		{
			name:     "empty string is returned unchanged",
			input:    "",
			contains: "",
		},
		{
			name:  "pattern in source context line is not replaced",
			input: "[1:1] unexpected key name\n>  1 | unexpected key name: here\n       ^",
			// The header should be translated, but source context must remain untouched.
			contains:           "missing ':' after key",
			sourceContextCheck: "unexpected key name: here",
		},
	}

	for _, tt := range tests {