diff --git a/pkg/codegen/modelgenerate/generate_model.go b/pkg/codegen/modelgenerate/generate_model.go
index e837a87..52de254 100644
--- a/pkg/codegen/modelgenerate/generate_model.go
+++ b/pkg/codegen/modelgenerate/generate_model.go
@@ -530,8 +530,10 @@ func GenerateGetAllItemsFunc(tbl schema.Table) *ast.FuncDecl {
 // GenerateDeleteItemFunc produces an AST for the `DeleteXyz()` function.
 // E.g., a table with `table.TypeName = "foods"` will produce a "DeleteFood()" function.
 func GenerateDeleteItemFunc(tbl schema.Table) *ast.FuncDecl {
-	funcName := "Delete" + tbl.GoTypeName
-	arg := &ast.FieldList{List: []*ast.Field{{Names: []*ast.Ident{ast.NewIdent(tbl.VarName)}, Type: ast.NewIdent(tbl.GoTypeName)}}}
+	arg := &ast.FieldList{List: []*ast.Field{{
+		Names: []*ast.Ident{ast.NewIdent(tbl.VarName)},
+		Type:  ast.NewIdent(tbl.GoTypeName),
+	}}}
 
 	funcBody := &ast.BlockStmt{
 		List: []ast.Stmt{
@@ -572,7 +574,7 @@ func GenerateDeleteItemFunc(tbl schema.Table) *ast.FuncDecl {
 
 	funcDecl := &ast.FuncDecl{
 		Recv: dbRecv,
-		Name: ast.NewIdent(funcName),
+		Name: ast.NewIdent("Delete" + tbl.GoTypeName),
 		Type: &ast.FuncType{Params: arg, Results: nil},
 		Body: funcBody,
 	}
diff --git a/pkg/codegen/modelgenerate/generate_testfile.go b/pkg/codegen/modelgenerate/generate_testfile.go
index a42e458..ebdb4e0 100644
--- a/pkg/codegen/modelgenerate/generate_testfile.go
+++ b/pkg/codegen/modelgenerate/generate_testfile.go
@@ -64,7 +64,7 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 					Rhs: []ast.Expr{mustCall(&ast.CallExpr{
 						Fun: ast.NewIdent("Create"),
 						Args: []ast.Expr{&ast.CallExpr{
-							Fun: ast.NewIdent("fmt.Sprintf"),
+							Fun: &ast.SelectorExpr{X: ast.NewIdent("fmt"), Sel: ast.NewIdent("Sprintf")},
 							Args: []ast.Expr{
 								&ast.BasicLit{Kind: token.STRING, Value: `"file:%s?mode=memory&cache=shared"`},
 								ast.NewIdent("dbName"),
@@ -112,21 +112,23 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 
 	hasCreatedAt, hasUpdatedAt := tbl.HasAutoTimestamps()
 
+	testFuncType := &ast.FuncType{
+		Params: &ast.FieldList{
+			List: []*ast.Field{{
+				Names: []*ast.Ident{ast.NewIdent("t")},
+				Type:  &ast.StarExpr{X: &ast.SelectorExpr{X: ast.NewIdent("testing"), Sel: ast.NewIdent("T")}},
+			}},
+		},
+	}
+
 	testCreateUpdateDelete := &ast.FuncDecl{
 		Name: ast.NewIdent("TestCreateUpdateDelete" + tbl.GoTypeName),
-		Type: &ast.FuncType{
-			Params: &ast.FieldList{
-				List: []*ast.Field{{
-					Names: []*ast.Ident{ast.NewIdent("t")},
-					Type:  ast.NewIdent("*testing.T"),
-				}},
-			},
-		},
+		Type: testFuncType,
 		Body: &ast.BlockStmt{
 			List: func() []ast.Stmt {
 				assertNotZero := func(obj *ast.Ident, field string) *ast.ExprStmt {
 					return &ast.ExprStmt{X: &ast.CallExpr{
-						Fun:  ast.NewIdent("assert.NotZero"),
+						Fun:  &ast.SelectorExpr{X: ast.NewIdent("assert"), Sel: ast.NewIdent("NotZero")},
 						Args: []ast.Expr{ast.NewIdent("t"), &ast.SelectorExpr{X: obj, Sel: ast.NewIdent(field)}},
 					}}
 				}
@@ -149,13 +151,13 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 
 					// TestDB.SaveItem(&item)
 					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun:  ast.NewIdent("TestDB.Save" + tbl.GoTypeName),
+						Fun:  &ast.SelectorExpr{X: ast.NewIdent("TestDB"), Sel: ast.NewIdent("Save" + tbl.GoTypeName)},
 						Args: []ast.Expr{&ast.UnaryExpr{Op: token.AND, X: testObj}},
 					}},
 
 					// require.NotZero(t, item.ID)
 					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun:  ast.NewIdent("require.NotZero"),
+						Fun:  &ast.SelectorExpr{X: ast.NewIdent("require"), Sel: ast.NewIdent("NotZero")},
 						Args: []ast.Expr{ast.NewIdent("t"), &ast.SelectorExpr{X: testObj, Sel: ast.NewIdent("ID")}},
 					}},
 				}
@@ -174,14 +176,14 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 						Lhs: []ast.Expr{testObj2},
 						Tok: token.DEFINE,
 						Rhs: []ast.Expr{mustCall(&ast.CallExpr{
-							Fun:  ast.NewIdent("TestDB.Get" + tbl.GoTypeName + "ByID"),
+							Fun:  &ast.SelectorExpr{X: ast.NewIdent("TestDB"), Sel: ast.NewIdent("Get" + tbl.GoTypeName + "ByID")},
 							Args: []ast.Expr{&ast.SelectorExpr{X: testObj, Sel: ast.NewIdent("ID")}},
 						})},
 					},
 
 					// assert.Equal(t, "an item", item2.Description)
 					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun: ast.NewIdent("assert.Equal"),
+						Fun: &ast.SelectorExpr{X: ast.NewIdent("assert"), Sel: ast.NewIdent("Equal")},
 						Args: []ast.Expr{
 							ast.NewIdent("t"),
 							&ast.BasicLit{Kind: token.STRING, Value: description1},
@@ -198,33 +200,25 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 
 					// TestDB.SaveItem(&item)
 					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun:  ast.NewIdent("TestDB.Save" + tbl.GoTypeName),
+						Fun:  &ast.SelectorExpr{X: ast.NewIdent("TestDB"), Sel: ast.NewIdent("Save" + tbl.GoTypeName)},
 						Args: []ast.Expr{&ast.UnaryExpr{Op: token.AND, X: testObj}},
 					}},
 				)
 
-				// After update: assert timestamps are still set
-				if hasCreatedAt {
-					stmts = append(stmts, assertNotZero(testObj, "CreatedAt"))
-				}
-				if hasUpdatedAt {
-					stmts = append(stmts, assertNotZero(testObj, "UpdatedAt"))
-				}
-
 				stmts = append(stmts,
 					// item2 = Must(TestDB.GetItemByID(item.ID))
 					&ast.AssignStmt{
 						Lhs: []ast.Expr{testObj2},
 						Tok: token.ASSIGN,
 						Rhs: []ast.Expr{mustCall(&ast.CallExpr{
-							Fun:  ast.NewIdent("TestDB.Get" + tbl.GoTypeName + "ByID"),
+							Fun:  &ast.SelectorExpr{X: ast.NewIdent("TestDB"), Sel: ast.NewIdent("Get" + tbl.GoTypeName + "ByID")},
 							Args: []ast.Expr{&ast.SelectorExpr{X: testObj, Sel: ast.NewIdent("ID")}},
 						})},
 					},
 
 					// assert.Equal(t, item.Description, item2.Description)
 					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun: ast.NewIdent("assert.Equal"),
+						Fun: &ast.SelectorExpr{X: ast.NewIdent("assert"), Sel: ast.NewIdent("Equal")},
 						Args: []ast.Expr{
 							ast.NewIdent("t"),
 							&ast.SelectorExpr{X: testObj, Sel: fieldName},
@@ -234,7 +228,7 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 
 					// TestDB.DeleteItem(item)
 					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun:  ast.NewIdent("TestDB.Delete" + tbl.GoTypeName),
+						Fun:  &ast.SelectorExpr{X: ast.NewIdent("TestDB"), Sel: ast.NewIdent("Delete" + tbl.GoTypeName)},
 						Args: []ast.Expr{testObj},
 					}},
 
@@ -243,14 +237,14 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 						Lhs: []ast.Expr{ast.NewIdent("_"), ast.NewIdent("err")},
 						Tok: token.DEFINE,
 						Rhs: []ast.Expr{&ast.CallExpr{
-							Fun:  ast.NewIdent("TestDB.Get" + tbl.GoTypeName + "ByID"),
+							Fun:  &ast.SelectorExpr{X: ast.NewIdent("TestDB"), Sel: ast.NewIdent("Get" + tbl.GoTypeName + "ByID")},
 							Args: []ast.Expr{&ast.SelectorExpr{X: testObj, Sel: ast.NewIdent("ID")}},
 						}},
 					},
 
 					// assert.ErrorIs(t, err, db.ErrNotInDB)
 					&ast.ExprStmt{X: &ast.CallExpr{
-						Fun: ast.NewIdent("assert.ErrorIs"),
+						Fun: &ast.SelectorExpr{X: ast.NewIdent("assert"), Sel: ast.NewIdent("ErrorIs")},
 						Args: []ast.Expr{
 							ast.NewIdent("t"),
 							ast.NewIdent("err"),
@@ -266,9 +260,7 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 
 	testGetAll := &ast.FuncDecl{
 		Name: ast.NewIdent("TestGetAll" + inflection.Plural(tbl.GoTypeName)),
-		Type: &ast.FuncType{Params: &ast.FieldList{List: []*ast.Field{
-			{Names: []*ast.Ident{ast.NewIdent("t")}, Type: &ast.StarExpr{X: ast.NewIdent("testing.T")}},
-		}}, Results: nil},
+		Type: testFuncType,
 		Body: &ast.BlockStmt{
 			List: []ast.Stmt{
 				&ast.AssignStmt{
@@ -288,21 +280,7 @@ func GenerateModelTestAST(tbl schema.Table, gomodName string) *ast.File {
 	shouldIncludeTestFkCheck := false
 	testFkChecking := &ast.FuncDecl{
 		Name: ast.NewIdent("Test" + tbl.GoTypeName + "FkChecking"),
-		Type: &ast.FuncType{
-			Params: &ast.FieldList{
-				List: []*ast.Field{
-					{
-						Names: []*ast.Ident{ast.NewIdent("t")},
-						Type: &ast.StarExpr{
-							X: &ast.SelectorExpr{
-								X:   ast.NewIdent("testing"),
-								Sel: ast.NewIdent("T"),
-							},
-						},
-					},
-				},
-			},
-		},
+		Type: testFuncType,
 		Body: &ast.BlockStmt{
 			List: func() []ast.Stmt {
 				// post := MakePost()