Always pass Context as last parameter

See #23 (comment)

Author: thekid

src/main/php/com/amazon/aws/lambda/RuntimeApi.class.php

@@ -110,7 +110,7 @@ public function end() {
       public function invoke($lambda, $event, $context) {
         try {
           $this->request= $this->api->request("invocation/{$context->awsRequestId}/response");
-          $lambda($event, $context, $this);
+          $lambda($event, $this, $context);
           $this->end();
           return $this->response;
         } catch (Throwable $t) {

src/main/php/xp/lambda/LocalRuntime.class.php

@@ -22,7 +22,7 @@ public function invoke($lambda, $event, $context) {
   public function streaming(): InvokeMode {
     return new class($this) extends InvokeMode {
       public function invoke($lambda, $event, $context) {
-        $lambda($event, $context, new class($this->api) implements Stream {
+        $stream= new class($this->api) implements Stream {
           private $api;
           public function __construct($api) { $this->api= $api; }
           public function transmit($source, $mime= null) {
@@ -34,7 +34,8 @@ public function transmit($source, $mime= null) {
           public function use($mime) { /** NOOP */ }
           public function write($bytes) { $this->api->out->write($bytes); }
           public function end() { /** NOOP */ }
-        });
+        };
+        $lambda($event, $stream, $context);
       }
     };
   }

src/test/php/com/amazon/aws/lambda/unittest/StreamingTest.class.php

@@ -11,7 +11,7 @@ class StreamingTest extends RuntimeTest {
   /**
    * Invokes a lambda and returns the response
    * 
-   * @param  function(var, com.amazon.aws.lambda.Context, com.amazon.aws.lambda.Streaming): void
+   * @param  function(var, com.amazon.aws.lambda.Streaming, com.amazon.aws.lambda.Context): void
    * @return string
    */
   private function invoke($lambda) {
@@ -29,7 +29,7 @@ public function can_create() {
 
   #[Test]
   public function noop() {
-    $response= $this->invoke(function($event, $context, $stream) {
+    $response= $this->invoke(function($event, $stream, $context) {
       // NOOP
     });
 
@@ -46,7 +46,7 @@ public function noop() {
 
   #[Test]
   public function reports_exceptions_before_streaming_via_error() {
-    $response= $this->invoke(function($event, $context, $stream) {
+    $response= $this->invoke(function($event, $stream, $context) {
       throw new IllegalStateException('Test');
     });
 
@@ -64,7 +64,7 @@ public function reports_exceptions_before_streaming_via_error() {
 
   #[Test]
   public function write_event_stream() {
-    $response= $this->invoke(function($event, $context, $stream) {
+    $response= $this->invoke(function($event, $stream, $context) {
       $stream->use('text/event-stream');
       $stream->write("data: One\n\n");
       $stream->write("data: Two\n\n");
@@ -85,7 +85,7 @@ public function write_event_stream() {
 
   #[Test]
   public function transmit() {
-    $response= $this->invoke(function($event, $context, $stream) {
+    $response= $this->invoke(function($event, $stream, $context) {
       $stream->transmit(new MemoryInputStream('{"test":true}'), 'application/json');
     });
 
@@ -104,15 +104,15 @@ public function transmit() {
 
   #[Test, Expect(IllegalStateException::class)]
   public function writing_after_end() {
-    $this->invoke(function($event, $context, $stream) {
+    $this->invoke(function($event, $stream, $context) {
       $stream->end();
       $stream->write('Test');
     });
   }
 
   #[Test, Expect(IllegalStateException::class)]
   public function changing_mime_type_after_end() {
-    $this->invoke(function($event, $context, $stream) {
+    $this->invoke(function($event, $stream, $context) {
       $stream->end();
       $stream->use('text/plain');
     });