add bracket syntax replace tests

lang/parser_entity_test.go

@@ -13,11 +13,12 @@ func TestParseEntityDefinitions(t *testing.T) {
 	}{
 		{
 			name: "entity with enhanced fields and relationships",
-			input: `entity User desc "User management"
+			input: `entity User desc "User management" {
 				id: uuid required unique
 				email: string required validate email validate min_length "5"
 				name: string default "Anonymous"
-				profile_id: uuid relates to Profile as one via "user_id"`,
+				profile_id: uuid relates to Profile as one via "user_id"
+			}`,
 			want: AST{
 				Definitions: []Definition{
 					{
@@ -61,6 +62,57 @@ func TestParseEntityDefinitions(t *testing.T) {
 			},
 			wantErr: false,
 		},
+		{
+			name: "simple entity with basic fields",
+			input: `entity Product {
+				id: uuid required unique
+				name: string required
+				price: decimal default "0.00"
+			}`,
+			want: AST{
+				Definitions: []Definition{
+					{
+						Entity: &Entity{
+							Name: "Product",
+							Fields: []Field{
+								{
+									Name:     "id",
+									Type:     "uuid",
+									Required: true,
+									Unique:   true,
+								},
+								{
+									Name:     "name",
+									Type:     "string",
+									Required: true,
+								},
+								{
+									Name:    "price",
+									Type:    "decimal",
+									Default: stringPtr("0.00"),
+								},
+							},
+						},
+					},
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name:  "entity without fields block",
+			input: `entity SimpleEntity`,
+			want: AST{
+				Definitions: []Definition{
+					{
+						Entity: &Entity{
+							Name:   "SimpleEntity",
+							Fields: []Field{},
+						},
+					},
+				},
+			},
+			wantErr: false,
+		},
 	}
 
 	for _, tt := range tests {