h_action test is written, but something is wrong with h_choice.

src/bindings/php/Tests/ActionTest.php

@@ -0,0 +1,32 @@
+<?php
+include_once 'hammer.php';
+
+class ActionTest extends PHPUnit_Framework_TestCase
+{
+    protected $parser;
+
+    protected function actTest(string $token) 
+    {
+        return strtoupper($token);
+    }
+    protected function setUp()
+    {
+        $this->parser = h_action(h_sequence(h_choice(h_ch("a"), h_ch("A")), h_choice(h_ch("b"), h_ch("B"))), "actTest");
+    }
+    public function testSuccess()
+    {
+        $result1 = h_parse($this->parser, "ab");
+        $result2 = h_parse($this->parser, "AB");
+        $result3 = h_parse($this->parser, "aB");
+        $this->assertEquals("AB", $result1);
+        $this->assertEquals("AB", $result2);
+        $this->assertEquals("AB", $result3);
+    }
+    public function testFailure()
+    {
+        $result = h_parse($this->parser, "XX");
+        $this->assertEquals(NULL, $result);
+    }
+}
+
+?>