public function testValidateAlphaSpace() { $this->assertTrue(Validator::isAlphaSpace('foo')); $this->assertTrue(Validator::isAlphaSpace(' foo ')); $this->assertTrue(Validator::isAlphaSpace('foo bar')); $this->assertTrue(Validator::isAlphaSpace('Über Größe')); $this->assertFalse(Validator::isAlphaSpace(null)); $this->assertFalse(Validator::isAlphaSpace(0)); $this->assertFalse(Validator::isAlphaSpace('123456')); $this->assertFalse(Validator::isAlphaSpace('abc-abc')); $this->assertFalse(Validator::isAlphaSpace('foo?')); $this->assertFalse(Validator::isAlphaSpace('😂')); }