Add test stub

Author: SOHELAHMED7

README.md

@@ -779,4 +779,3 @@ Professional support, consulting as well as software development services are av
 https://www.cebe.cc/en/contact
 
 Development of this library is sponsored by [cebe.:cloud: "Your Professional Deployment Platform"](https://cebe.cloud).
-

tests/specs/issue_fix/90_implement_belongs_to_relations_in_models/index.php

@@ -0,0 +1,13 @@
+<?php
+
+return [
+    'openApiPath' => '@specs/issue_fix/90_implement_belongs_to_relations_in_models/index.yaml',
+    'generateUrls' => false,
+    'generateModels' => true,
+    'excludeModels' => [
+        'Error',
+    ],
+    'generateControllers' => false,
+    'generateMigrations' => false,
+    'generateModelFaker' => false, // `generateModels` must be `true` in order to use `generateModelFaker` as `true`
+];

tests/specs/issue_fix/90_implement_belongs_to_relations_in_models/index.yaml

@@ -0,0 +1,26 @@
+openapi: "3.0.0"
+info:
+  version: 1.0.0
+  title: \#90
+paths:
+  /:
+    get:
+      responses:
+        '200':
+          description: The information
+
+components:
+  schemas:
+    User:
+      type: object
+      properties:
+        id:
+          type: integer
+
+    Address:
+      type: object
+      properties:
+        id:
+          type: integer
+        user:
+          $ref: '#/components/schemas/User'

tests/unit/IssueFixTest.php

@@ -1014,4 +1014,18 @@ public function test22BugRulesRequiredIsGeneratedBeforeDefault()
         ]);
         $this->checkFiles($actualFiles, $expectedFiles);
     }
+
+    // https://github.com/php-openapi/yii2-openapi/issues/90
+    public function test90ImplementBelongsToRelationsInModels()
+    {
+        $testFile = Yii::getAlias("@specs/issue_fix/90_implement_belongs_to_relations_in_models/index.php");
+        $this->runGenerator($testFile);
+        $actualFiles = FileHelper::findFiles(Yii::getAlias('@app'), [
+            'recursive' => true,
+        ]);
+        $expectedFiles = FileHelper::findFiles(Yii::getAlias("@specs/issue_fix/90_implement_belongs_to_relations_in_models/mysql"), [
+            'recursive' => true,
+        ]);
+        $this->checkFiles($actualFiles, $expectedFiles);
+    }
 }