feat(goctl): Add api parser (#2585)

tools/goctl/pkg/parser/api/assertx/error.go

@@ -0,0 +1,32 @@
+package assertx
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+// ErrorOrigin is used to assert error and print source and error.
+func ErrorOrigin(t *testing.T, source string, err ...error) {
+	if len(err) == 0 {
+		t.Fatalf("expected errors, got 0 error")
+		return
+	}
+	for _, e := range err {
+		fmt.Printf("<%s>: %v\n", source, e)
+		assert.Error(t, e)
+	}
+}
+
+// Error is used to assert error.
+func Error(t *testing.T, err ...error) {
+	if len(err) == 0 {
+		t.Fatalf("expected errors, got 0 error")
+		return
+	}
+	for _, e := range err {
+		fmt.Println(e)
+		assert.Error(t, e)
+	}
+}