[5.5] Add assertValidationErrors and assertJsonCount to TestResponse

src/Illuminate/Foundation/Testing/TestResponse.php

@@ -277,6 +277,26 @@ public function assertDontSeeText($value)
         return $this;
     }
 
+    /**
+     * Assert that the response has validation errors for the given keys.
+     *
+     * @param string|array $keys
+     * @return $this
+     */
+    public function assertValidationErrors($keys)
+    {
+        $errors = $this->json()['errors'];
+
+        foreach (array_wrap($keys) as $key) {
+            PHPUnit::assertTrue(
+                isset($errors[$key]),
+                "Failed to find a validation error in the response for key: '{$key}'"
+            );
+        }
+
+        return $this;
+    }
+
     /**
      * Assert that the response is a superset of the given JSON.
      *
@@ -293,6 +313,32 @@ public function assertJson(array $data, $strict = false)
         return $this;
     }
 
+    /**
+     * Assert that the response json has the expected count.
+     *
+     * @param int $count
+     * @param string|null $key
+     * @return $this
+     */
+    public function assertJsonCount(int $count, $key = null)
+    {
+        if ($key) {
+            PHPUnit::assertCount($count,
+                $this->json()[$key],
+                "Failed to assert that the response count matched the expected {$count}"
+            );
+
+            return $this;
+        }
+
+        PHPUnit::assertCount($count,
+            $this->json(),
+            "Failed to assert that the response count matched the expected {$count}"
+        );
+
+        return $this;
+    }
+
     /**
      * Get the assertion message for assertJson.
      *