Removed utf8 from json function, add default flags, and more unit tests

flight/Engine.php

@@ -830,7 +830,7 @@ public function _render(string $file, ?array $data = null, ?string $key = null):
      * @param mixed $data JSON data
      * @param int $code HTTP status code
      * @param bool $encode Whether to perform JSON encoding
-     * @param string $charset Charset
+     * @param ?string $charset Charset
      * @param int $option Bitmask Json constant such as JSON_HEX_QUOT
      *
      * @throws Exception
@@ -839,14 +839,16 @@ public function _json(
         $data,
         int $code = 200,
         bool $encode = true,
-        string $charset = 'utf-8',
+        ?string $charset = 'utf-8',
         int $option = 0
     ): void {
+		// add some default flags
+		$option |= JSON_UNESCAPED_SLASHES | JSON_THROW_ON_ERROR;
         $json = $encode ? json_encode($data, $option) : $data;
 
         $this->response()
             ->status($code)
-            ->header('Content-Type', 'application/json; charset=' . $charset)
+            ->header('Content-Type', 'application/json')
             ->write($json);
         if ($this->response()->v2_output_buffering === true) {
             $this->response()->send();

tests/EngineTest.php

@@ -12,6 +12,7 @@
 use flight\net\Response;
 use flight\util\Collection;
 use InvalidArgumentException;
+use JsonException;
 use PDOException;
 use PHPUnit\Framework\TestCase;
 use tests\classes\Container;
@@ -355,18 +356,36 @@ public function testJson()
     {
         $engine = new Engine();
         $engine->json(['key1' => 'value1', 'key2' => 'value2']);
-        $this->assertEquals('application/json; charset=utf-8', $engine->response()->headers()['Content-Type']);
+        $this->assertEquals('application/json', $engine->response()->headers()['Content-Type']);
         $this->assertEquals(200, $engine->response()->status());
 		$this->assertEquals('{"key1":"value1","key2":"value2"}', $engine->response()->getBody());
     }
 
+	public function testJsonWithDuplicateDefaultFlags()
+	{
+		$engine = new Engine();
+		// utf8 emoji
+		$engine->json(['key1' => 'value1', 'key2' => 'value2', 'utf8_emoji' => '😀'], 201, true, '', JSON_HEX_TAG | JSON_HEX_TAG | JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
+		$this->assertEquals('application/json', $engine->response()->headers()['Content-Type']);
+		$this->assertEquals(201, $engine->response()->status());
+		$this->assertEquals('{"key1":"value1","key2":"value2","utf8_emoji":"😀"}', $engine->response()->getBody());
+	}
+
+	public function testJsonThrowOnErrorByDefault()
+	{
+		$engine = new Engine();
+		$this->expectException(JsonException::class);
+		$this->expectExceptionMessage('Malformed UTF-8 characters, possibly incorrectly encoded');
+		$engine->json(['key1' => 'value1', 'key2' => 'value2', 'utf8_emoji' => "\xB1\x31"]);
+	}
+
 	public function testJsonV2OutputBuffering()
     {
         $engine = new Engine();
 		$engine->response()->v2_output_buffering = true;
         $engine->json(['key1' => 'value1', 'key2' => 'value2']);
         $this->expectOutputString('{"key1":"value1","key2":"value2"}');
-        $this->assertEquals('application/json; charset=utf-8', $engine->response()->headers()['Content-Type']);
+        $this->assertEquals('application/json', $engine->response()->headers()['Content-Type']);
         $this->assertEquals(200, $engine->response()->status());
     }
 
@@ -375,7 +394,7 @@ public function testJsonHalt()
         $engine = new Engine();
 		$this->expectOutputString('{"key1":"value1","key2":"value2"}');
         $engine->jsonHalt(['key1' => 'value1', 'key2' => 'value2']);
-        $this->assertEquals('application/json; charset=utf-8', $engine->response()->headers()['Content-Type']);
+        $this->assertEquals('application/json', $engine->response()->headers()['Content-Type']);
         $this->assertEquals(200, $engine->response()->status());
 		$this->assertEquals('{"key1":"value1","key2":"value2"}', $engine->response()->getBody());
     }

tests/commands/RouteCommandTest.php

@@ -81,6 +81,10 @@ protected function createIndexFile()
 
     protected function removeColors(string $str): string
     {
+		// replace \n with \r\n if windows
+		if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
+			$str = str_replace("\r\n", "\n", $str);
+		}
         return preg_replace('/\e\[[\d;]*m/', '', $str);
     }