Don't throw exception when type keyword is missing

Author: ybelenko

src/Mock/BaseModel.php

@@ -117,7 +117,8 @@ public static function createFromData($data): OpenApiModelInterface
     public function setData($data): void
     {
         $schema = (array) static::getOpenApiSchema();
-        switch ($schema['type']) {
+        $modelType = (array_key_exists('type', $schema)) ? $schema['type'] : null;
+        switch ($modelType) {
             case IMocker::DATA_TYPE_ARRAY:
                 // data for array OAS type should be straight indexed array
                 if (is_array($data)) {
@@ -163,7 +164,8 @@ public function getData()
     {
         $data = null;
         $schema = (array) static::getOpenApiSchema();
-        switch ($schema['type']) {
+        $modelType = (array_key_exists('type', $schema)) ? $schema['type'] : null;
+        switch ($modelType) {
             case IMocker::DATA_TYPE_OBJECT:
                 // need to convert data container to object
                 $data = new StdClass();
@@ -289,7 +291,7 @@ public function jsonSerialize()
     protected function validateModelType(?string $type = null, bool $throwException = true): bool
     {
         $isValid = in_array($type, static::VALID_OAS_DATA_TYPES);
-        if ($isValid === false && $throwException) {
+        if ($type !== null && $isValid === false && $throwException) {
             throw new InvalidArgumentException(
                 sprintf(
                     'Invalid OAS schema of %s model, "type" must be one of %s',

test/Mock/BaseModelTest.php

@@ -57,6 +57,7 @@ public function provideClassesAndDefaultData()
             'string model' => [BasicStringTestClass::class, json_encode(null)],
             'array model' => [BasicArrayTestClass::class, json_encode([])],
             'object model' => [BasicObjectTestClass::class, json_encode(new StdClass())],
+            'missing type model' => [MissingTypeTestClass::class, json_encode(null)],
         ];
     }
 
@@ -75,7 +76,6 @@ public function provideInvalidClasses()
     {
         return [
             'unknown type model' => [UnknownTypeTestClass::class],
-            'missing type model' => [MissingTypeTestClass::class],
         ];
     }