public function testIsValidRange() { $r = new Reference(); $pass = 2002002002; $fail1 = 2002002; $fail2 = 2002002002002; $this->assertFalse($r->isValidRange([])); $this->assertFalse($r->isValidRange([0])); $this->assertFalse($r->isValidRange([0, 0, 0])); $this->assertTrue($r->isValidRange([$pass, $pass])); $this->assertFalse($r->isValidRange([$pass, $fail1])); $this->assertFalse($r->isValidRange([$fail2, $pass])); }