route table-driven error checks through shared helper

Author: mgomes

vibes/examples_test.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"maps"
 	"path/filepath"
-	"strings"
 	"testing"
 )
 
@@ -2040,9 +2039,7 @@ func TestExamples(t *testing.T) {
 				if err == nil {
 					t.Fatalf("expected error %q, got nil", tc.wantErr)
 				}
-				if !strings.Contains(err.Error(), tc.wantErr) {
-					t.Fatalf("expected error containing %q, got %q", tc.wantErr, err.Error())
-				}
+				requireErrorContains(t, err, tc.wantErr)
 			} else {
 				if err != nil {
 					t.Fatalf("unexpected error: %v", err)

vibes/modules_test.go

@@ -93,11 +93,8 @@ end`,
 	for _, tc := range cases {
 		t.Run(tc.name, func(t *testing.T) {
 			script := compileScriptWithEngine(t, engine, tc.source)
-			if _, err := script.Call(context.Background(), "run", nil, CallOptions{}); err == nil {
-				t.Fatalf("expected alias validation error")
-			} else if !strings.Contains(err.Error(), tc.wantErr) {
-				t.Fatalf("unexpected error: %v", err)
-			}
+			err := callScriptErr(t, context.Background(), script, "run", nil, CallOptions{})
+			requireErrorContains(t, err, tc.wantErr)
 		})
 	}
 }