public function testIsNumber()
{
// Arrange
$a = 123;
// Act
$x = __::isNumber($a);
// Assert
$this->assertEquals(true, $x);
}
public function testIsNumber()
{
$num1 = 12.34;
$num2 = 1;
$num3 = '1';
$num4 = '01';
$num5 = 'a1';
$num6 = true;
$num7 = '1a';
$this->assertEquals(__::isNumber($num1), true);
$this->assertEquals(__::isNumber($num2), true);
$this->assertEquals(__::isNumber($num3), true);
$this->assertEquals(__::isNumber($num4), true);
$this->assertEquals(__::isNumber($num5), false);
$this->assertEquals(__::isNumber($num6), false);
$this->assertEquals(__::isNumber($num7), false);
}
public function testIsNumber()
{
// from js
$this->assertFalse(__::isNumber('string'), 'a string is not a number');
$this->assertFalse(__::isNumber(null), 'null is not a number');
$this->assertTrue(__::isNumber(3 * 4 - 7 / 10), 'but numbers are');
// extra
$this->assertFalse(__::isNumber(acos(8)), 'invalid calculations (nan) are not numbers');
$this->assertFalse(__::isNumber('1'), 'strings of numbers are not numbers');
$this->assertFalse(__::isNumber(log(0)), 'infinite values are not numbers');
$this->assertTrue(__::isNumber(pi()));
$this->assertTrue(__::isNumber(M_PI));
$this->assertFalse(__(acos(8))->isNumber());
$this->assertFalse(__('1')->isNumber());
$this->assertFalse(__(log(0))->isNumber());
$this->assertTrue(__(pi())->isNumber());
$this->assertTrue(__(M_PI)->isNumber());
$this->assertTrue(__(1)->isNumber());
// docs
$this->assertTrue(__::isNumber(1));
$this->assertTrue(__::isNumber(2.5));
$this->assertFalse(__::isNumber('5'));
}
