Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
| 1 | <?php |
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| 37 | class WhipTest extends PHPUnit_Framework_TestCase |
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| 38 | { |
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| 39 | /** |
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| 40 | * Tests that an invalid source format is rejected. |
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| 41 | * @expectedException \InvalidArgumentException |
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| 42 | */ |
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| 43 | public function testInvalidSource() |
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| 47 | /** |
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| 48 | * Tests that we get back the right IP when there using superglobals. |
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| 49 | */ |
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| 50 | public function testSuperglobal() |
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| 56 | |||
| 57 | /** |
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| 58 | * Tests that we get back 127.0.0.1 when there is no superglobal information |
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| 59 | * at all. |
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| 60 | */ |
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| 61 | public function testEmptySuperglobal() |
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| 67 | |||
| 68 | /** |
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| 69 | * Helper to get a mocked PSR-7 instance. |
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| 70 | * |
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| 71 | * @param string $remoteAddr The remote address to mock. |
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| 72 | * @param string[][] $headers The headers, in the format expected by Psr-7. |
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| 73 | */ |
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| 74 | private function getHttpMessageMock($remoteAddr, array $headers = array()) |
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| 86 | /** |
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| 87 | * Tests that we can use a PSR-7 ServerRequestInterface compatible class. |
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| 88 | */ |
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| 89 | public function testPsr7Request() |
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| 105 | |||
| 106 | /** |
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| 107 | * Tests that we get false when no valid IP address could be found. |
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| 108 | */ |
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| 109 | public function testNoAddresFoundDueToBitmask() |
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| 115 | |||
| 116 | /** |
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| 117 | * Tests the standard REMOTE_ADDR method. |
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| 118 | */ |
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| 119 | public function testRemoteAddrMethod() |
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| 125 | |||
| 126 | /** |
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| 127 | * Tests that an invalid IPv4 address returns false. |
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| 128 | */ |
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| 129 | public function testInvalidIPv4Address() |
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| 135 | |||
| 136 | /** |
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| 137 | * Tests a valid IPv6 address. |
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| 138 | */ |
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| 139 | public function testValidIPv6Address() |
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| 145 | |||
| 146 | /** |
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| 147 | * Tests that we accept whitelisted proxy methods when the IP matches, even |
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| 148 | * if the IP listed is a comma separated list. |
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| 149 | * |
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| 150 | * @dataProvider proxyMethodWhitelistProvider |
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| 151 | */ |
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| 152 | View Code Duplication | public function testValidWhitelistedProxyMethod($remoteAddr) |
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| 169 | |||
| 170 | /** |
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| 171 | * Repeats the above test twice for ipv4 and ipv6 |
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| 172 | */ |
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| 173 | public function proxyMethodWhitelistProvider() |
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| 180 | |||
| 181 | /** |
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| 182 | * Tests that we accept proxy method based on a whitelisted IP using the |
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| 183 | * dashed range notation. |
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| 184 | */ |
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| 185 | View Code Duplication | public function testValidWhitelistedProxyMethodWithDashNotation() |
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| 206 | |||
| 207 | /** |
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| 208 | * Tests that we accept proxy method based on a whitelisted IP using the |
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| 209 | * wildcard asterix notation. |
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| 210 | */ |
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| 211 | View Code Duplication | public function testValidWhitelistedProxyMethodWithWildcardNotation() |
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| 232 | |||
| 233 | /** |
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| 234 | * Tests that we accept proxy method based on a whitelisted IP using the |
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| 235 | * CIDR address notation. |
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| 236 | */ |
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| 237 | View Code Duplication | public function testValidWhitelistedProxyMethodWithCIDRdNotation() |
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| 258 | |||
| 259 | /** |
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| 260 | * Tests that we get false if there is a valid IP in a proxy header but |
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| 261 | * we reject it due to REMOTE_ADDR not being in the whitelist. |
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| 262 | */ |
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| 263 | View Code Duplication | public function testValidIpRejectedDueToWhitelist() |
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| 284 | |||
| 285 | /** |
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| 286 | * Tests that we reject a proxy listed IPv6 address that does not fall within |
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| 287 | * the allowed subnet. |
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| 288 | */ |
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| 289 | public function testIPv6AddressRejectedDueToWhitelist() |
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| 307 | |||
| 308 | /** |
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| 309 | * Tests that we reject a proxy listed IPv6 address that does not fall within |
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| 310 | * the allowed subnet. |
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| 311 | */ |
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| 312 | public function testIPv6AddressFoundInWhitelist() |
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| 330 | |||
| 331 | /** |
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| 332 | * Test that an IPv4 address is rejected because the whitelist is empty for |
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| 333 | * IPv4. |
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| 334 | */ |
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| 335 | public function testIPv4AddressRejectedDueToEmptyWhitelist() |
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| 353 | |||
| 354 | /** |
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| 355 | * Test that an IPv6 address is rejected because the whitelist is empty for |
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| 356 | * IPv6. |
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| 357 | */ |
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| 358 | public function testIPv6AddressRejectedDueToEmptyWhitelist() |
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| 376 | |||
| 377 | /** |
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| 378 | * Test a custom header with a whitelisted IP. |
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| 379 | */ |
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| 380 | View Code Duplication | public function testCustomHeader() |
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| 402 | |||
| 403 | /** |
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| 404 | * Test HTTP_X_REAL_IP header. |
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| 405 | */ |
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| 406 | public function testHttpXRealIpHeader() |
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| 418 | |||
| 419 | /** |
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| 420 | * Tests that if we specify the source array, it overrides any values found |
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| 421 | * in the $_SERVER array. |
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| 422 | */ |
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| 423 | View Code Duplication | public function testSourceArrayOverridesServerSuperglobal() |
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| 432 | |||
| 433 | /** |
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| 434 | * Tests that if we specify the source array through Whip::setSource, the |
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| 435 | * class will override any values found in $_SERVER. |
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| 436 | */ |
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| 437 | View Code Duplication | public function testSetSourceArrayOverridesServerSuperglobal() |
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| 447 | |||
| 448 | /** |
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| 449 | * Tests that we fallback to REMOTE_ADDR if the custom header was not found |
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| 450 | */ |
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| 451 | public function testFallbackToRemoteAddr() |
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| 459 | } |
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| 460 |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: