public function testIsEmpty() { $this->assertTrue($this->object->isEmpty(null)); $this->assertTrue($this->object->isEmpty('')); $this->assertTrue($this->object->isEmpty("")); $this->assertTrue($this->object->isEmpty(" ")); $this->assertTrue($this->object->isEmpty(' ')); $this->assertFalse($this->object->isEmpty('0')); $this->assertFalse($this->object->isEmpty(0)); $this->assertFalse($this->object->isEmpty('abc')); $this->assertFalse($this->object->isEmpty(true)); $this->assertFalse($this->object->isEmpty('true')); $this->assertFalse($this->object->isEmpty('false')); $this->assertFalse($this->object->isEmpty(false)); }