+ $this->assertEquals(12, strlen(generate_api_secret('foo', 'bar')));
+ }
+
+ /**
+ * Test generateSecretApi with invalid parameters.
+ */
+ public function testGenerateSecretApiInvalid()
+ {
+ $this->assertFalse(generate_api_secret('', ''));
+ $this->assertFalse(generate_api_secret(false, false));
+ }
+
+ /**
+ * Test normalize_spaces.
+ */
+ public function testNormalizeSpace()
+ {
+ $str = ' foo bar is important ';
+ $this->assertEquals('foo bar is important', normalize_spaces($str));
+ $this->assertEquals('foo', normalize_spaces('foo'));
+ $this->assertEquals('', normalize_spaces(''));
+ $this->assertEquals(null, normalize_spaces(null));
+ }
+
+ /**
+ * Test arrays_combine
+ */
+ public function testCartesianProductGenerator()
+ {
+ $arr = [['ab', 'cd'], ['ef', 'gh'], ['ij', 'kl'], ['m']];
+ $expected = [
+ ['ab', 'ef', 'ij', 'm'],
+ ['ab', 'ef', 'kl', 'm'],
+ ['ab', 'gh', 'ij', 'm'],
+ ['ab', 'gh', 'kl', 'm'],
+ ['cd', 'ef', 'ij', 'm'],
+ ['cd', 'ef', 'kl', 'm'],
+ ['cd', 'gh', 'ij', 'm'],
+ ['cd', 'gh', 'kl', 'm'],
+ ];
+ $this->assertEquals($expected, iterator_to_array(cartesian_product_generator($arr)));
+ }
+
+ /**
+ * Test date_format() with invalid parameter.
+ */
+ public function testDateFormatInvalid()
+ {
+ $this->assertFalse(format_date([]));
+ $this->assertFalse(format_date(null));
+ }
+
+ /**
+ * Test is_integer_mixed with valid values
+ */
+ public function testIsIntegerMixedValid()
+ {
+ $this->assertTrue(is_integer_mixed(12));
+ $this->assertTrue(is_integer_mixed('12'));
+ $this->assertTrue(is_integer_mixed(-12));
+ $this->assertTrue(is_integer_mixed('-12'));
+ $this->assertTrue(is_integer_mixed(0));
+ $this->assertTrue(is_integer_mixed('0'));
+ $this->assertTrue(is_integer_mixed(0x0a));
+ }
+
+ /**
+ * Test is_integer_mixed with invalid values
+ */
+ public function testIsIntegerMixedInvalid()
+ {
+ $this->assertFalse(is_integer_mixed(true));
+ $this->assertFalse(is_integer_mixed(false));
+ $this->assertFalse(is_integer_mixed([]));
+ $this->assertFalse(is_integer_mixed(['test']));
+ $this->assertFalse(is_integer_mixed([12]));
+ $this->assertFalse(is_integer_mixed(new DateTime()));
+ $this->assertFalse(is_integer_mixed('0x0a'));
+ $this->assertFalse(is_integer_mixed('12k'));
+ $this->assertFalse(is_integer_mixed('k12'));
+ $this->assertFalse(is_integer_mixed(''));
+ }
+
+ /**
+ * Test return_bytes
+ */
+ public function testReturnBytes()
+ {
+ $this->assertEquals(2 * 1024, return_bytes('2k'));
+ $this->assertEquals(2 * 1024, return_bytes('2K'));
+ $this->assertEquals(2 * (pow(1024, 2)), return_bytes('2m'));
+ $this->assertEquals(2 * (pow(1024, 2)), return_bytes('2M'));
+ $this->assertEquals(2 * (pow(1024, 3)), return_bytes('2g'));
+ $this->assertEquals(2 * (pow(1024, 3)), return_bytes('2G'));
+ $this->assertEquals(374, return_bytes('374'));
+ $this->assertEquals(374, return_bytes(374));
+ $this->assertEquals(0, return_bytes('0'));
+ $this->assertEquals(0, return_bytes(0));
+ $this->assertEquals(-1, return_bytes('-1'));
+ $this->assertEquals(-1, return_bytes(-1));
+ $this->assertEquals('', return_bytes(''));