Add assertStringStartsWith (#4374)

Author: guidocella

src/Codeception/Module/Asserts.php

@@ -183,6 +183,30 @@ public function assertNotRegExp($pattern, $string, $message = '')
         parent::assertNotRegExp($pattern, $string, $message);
     }
 
+    /**
+     * Checks that a string starts with the given prefix.
+     *
+     * @param string $prefix
+     * @param string $string
+     * @param string $message
+     */
+    public function assertStringStartsWith($prefix, $string, $message = '')
+    {
+        parent::assertStringStartsWith($prefix, $string, $message);
+    }
+
+    /**
+     * Checks that a string doesn't start with the given prefix.
+     *
+     * @param string $prefix
+     * @param string $string
+     * @param string $message
+     */
+    public function assertStringStartsNotWith($prefix, $string, $message = '')
+    {
+        parent::assertStringStartsNotWith($prefix, $string, $message);
+    }
+
 
     /**
      * Checks that variable is empty.

tests/unit/Codeception/Module/AssertsTest.php

@@ -10,6 +10,8 @@ public function testAsserts()
         $module->assertNotSame(1, '1');
         $module->assertRegExp('/^[\d]$/', '1');
         $module->assertNotRegExp('/^[a-z]$/', '1');
+        $module->assertStringStartsWith('fo', 'foo');
+        $module->assertStringStartsNotWith('ba', 'foo');
         $module->assertEmpty([]);
         $module->assertNotEmpty([1]);
         $module->assertNull(null);