fix: correct tests condition and rename the error

error.go

@@ -63,28 +63,40 @@ func IsInvalidAliasNameError(err error) bool {
 	return xerrors.Is(err, ast.ErrInvalidAliasName)
 }
 
-// SyntaxError represents an syntax error associated with a specific [token.Token].
-type SyntaxError struct {
-	Msg   string
+// TokenScopedError represents an error associated with a specific [token.Token].
+type TokenScopedError struct {
+	// Msg is the underlying error message.
+	Msg string
+	// Token is the [token.Token] associated with this error.
 	Token *token.Token
-
-	err *errors.SyntaxError
+	// err is the underlying, unwraped error.
+	err error
 }
 
 // Error implements the error interface.
-func (s SyntaxError) Error() string {
+// It returns the unwraped error returned by go-yaml.
+func (s TokenScopedError) Error() string {
 	return s.err.Error()
 }
 
-// AsSyntaxError checks if error was a syntax error and returns it if so.
+// AsTokenScopedError checks if the error is associated with a specific token.
+// If so, it returns
 // Otherwise, it returns nil.
-func AsSyntaxError(err error) *SyntaxError {
+func AsTokenScopedError(err error) *TokenScopedError {
 	var syntaxError *errors.SyntaxError
 	if xerrors.As(err, &syntaxError) {
-		return &SyntaxError{
+		return &TokenScopedError{
 			Msg:   syntaxError.GetMessage(),
 			Token: syntaxError.GetToken(),
-			err:   syntaxError,
+			err:   err,
+		}
+	}
+	var typeError *errors.TypeError
+	if xerrors.As(err, &typeError) {
+		return &TokenScopedError{
+			Msg:   typeError.Error(),
+			Token: typeError.Token,
+			err:   err,
 		}
 	}
 	return nil

error_test.go

@@ -1,6 +1,7 @@
 package yaml
 
 import (
+	"reflect"
 	"testing"
 
 	"github.com/goccy/go-yaml/internal/errors"
@@ -11,7 +12,7 @@ import (
 func TestAsSyntaxError(t *testing.T) {
 	tests := []struct {
 		input    error
-		expected *SyntaxError
+		expected *TokenScopedError
 	}{
 		{
 			input:    nil,
@@ -23,7 +24,7 @@ func TestAsSyntaxError(t *testing.T) {
 		},
 		{
 			input: errors.ErrSyntax("some error", &token.Token{Value: "123"}),
-			expected: &SyntaxError{
+			expected: &TokenScopedError{
 				Msg:   "some error",
 				Token: &token.Token{Value: "123"},
 			},
@@ -32,21 +33,35 @@ func TestAsSyntaxError(t *testing.T) {
 			input: xerrors.Errorf(
 				"something went wrong: %w",
 				errors.ErrSyntax("some error", &token.Token{Value: "123"})),
-			expected: &SyntaxError{
+			expected: &TokenScopedError{
 				Msg:   "some error",
 				Token: &token.Token{Value: "123"},
 			},
 		},
 		{
 			input: errUnknownField("unknown field", &token.Token{Value: "123"}),
-			expected: &SyntaxError{
+			expected: &TokenScopedError{
 				Msg:   "unknown field",
 				Token: &token.Token{Value: "123"},
 			},
 		},
+		{
+			input: errDuplicateKey("duplicate key", &token.Token{Value: "123"}),
+			expected: &TokenScopedError{
+				Msg:   "duplicate key",
+				Token: &token.Token{Value: "123"},
+			},
+		},
+		{
+			input: errTypeMismatch(reflect.TypeOf("string"), reflect.TypeOf(0), &token.Token{Value: "123"}),
+			expected: &TokenScopedError{
+				Msg:   "cannot unmarshal int into Go value of type string",
+				Token: &token.Token{Value: "123"},
+			},
+		},
 	}
 	for _, test := range tests {
-		syntaxErr := AsSyntaxError(test.input)
+		syntaxErr := AsTokenScopedError(test.input)
 		if test.expected == nil {
 			if syntaxErr != nil {
 				t.Fatalf("wanted nil, but go %v", syntaxErr)
@@ -56,7 +71,7 @@ func TestAsSyntaxError(t *testing.T) {
 		if syntaxErr == nil {
 			t.Fatalf("must not be nil")
 		}
-		if *test.expected.Token != *syntaxErr.Token && test.expected.Msg != syntaxErr.Msg {
+		if *test.expected.Token != *syntaxErr.Token || test.expected.Msg != syntaxErr.Msg {
 			t.Fatalf("unexpected output.\nexpect:\n[%v]\nactual:\n[%v]", test.expected, syntaxErr)
 		}
 	}