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Added README.TESTING
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README.TESTING
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README.TESTING
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[IMPORTANT NOTICE]
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------------------
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Do _not_ ask to developers why some or all tests are failed under
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your environment! Let us know if you find why it fails. Thank you.
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[Testing Basics]
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--------
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You must build CGI SAPI, then you can do "make test" to
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execute all or some test scripts saved under
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"tests" directory under source root directory.
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Usage:
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make test
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"make test" basically executes "run-tests.php" script
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under source root. Therefore you can execute the script
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like
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./php -c php.ini-dist run-tests.php [ext/some_extension_name]
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[Which "php" executable "make test" look for]
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---------------------------------------------
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"make test" executes "run-tests.php" script with "./sapi/cli/php".
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Although, "run-tests.php" is executed by CLI SAPI binary, test
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scripts must be executed by CGI SAPI. Therefore, you must build
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PHP with CGI SAPI to perform tests.
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"run-tests.php" look for "php" executable in build top directory,
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then look for search path. Therefore, if you have "php" executable
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other than CGI SAPI in your search path or source root, tests may fail.
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[Which php.ini is used]
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-----------------------
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"make test" force to use php.ini-dist as default config file. If
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you would like to test with other configuration file, user
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"run-tests.php" script.
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Example:
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./php -c ./your_php.ini ext/standard
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If you use php.ini other than php.ini-dist, you may see more
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failed.
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[Which test scripts are executed]
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---------------------------------
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"run-tests.php" ("make test") executes all test scripts by default
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by looking all directory named "tests". If there are files have "phpt"
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extension, "run-tests.php" takes test php code from the file and
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executes it.
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Tester can easily executes tests selectively with as follows.
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Example:
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./php -c php.ini-dist run-tests.php ext/mbstring
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[Test results]
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--------------
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Test results are printed to standard output. If there is a failed test,
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"run-tests.php" script saves the result, expected result and code
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executed to the test script directory. For example, if
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ext/myext/tests/myext.phpt is failed to pass, following files are
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created:
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ext/myext/tests/myext.out - output from test script
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ext/myext/tests/myext.exp - expected output
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ext/myext/tests/myext.php - test script executed
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Tester can verify these files, if failed test is actually a bug
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or not.
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[Creating new test files]
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-------------------------
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Writing test file is very easy if you are used to PHP. Test file
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has following format. Here is a actual test file from iconv module.
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===== ext/iconv/002.phpt =======
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--TEST--
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UCS4BE to ASCII
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--SKIPIF--
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<?php include('skipif.inc'); ?>
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--POST--
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--GET--
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--FILE--
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<?php include('002.inc'); ?>
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--EXPECT--
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abcd
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abcd
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===== end of ext/iconv/002.phpt =======
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"--TEST--" is title of the test.
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"--SKIPIF--" is condition when to skip this test.
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"--POST--" is POST variable passed to test script.
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"--GET--" is GET variable passed to test script.
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"--FILE--" is the test script.
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"--EXPECT--" is the expected output from the test script.
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ext/iconv/002.phpt uses 2 files. "skipif.inc" is used to skip
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test when test cannot be performed such as iconv module is not
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compiled or loaded.
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==== ext/iconv/skipif.inc ====
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<?php
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// This script prints "skip" if condition does not meet.
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if (!extension_loaded("iconv") && ini_get("enable_dl")) {
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$dlext = (substr(PHP_OS, 0, 3) == "WIN") ? ".dll" : ".so";
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@dl("iconv$dlext");
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}
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if (!extension_loaded("iconv")) {
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die("skip\n");
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}
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?>
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==== end of ext/iconv/skipif.inc ====
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ext/inconv/002.inc is the test script. "run-tests.php" script
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executes test script with CGI executable.
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==== ext/iconv/002.inc ===
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<?php
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/*
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Expected output:
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abcd
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abcd
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*/
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$s = unpack("V*", iconv("ascii","UCS-4LE", "abcd"));
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foreach($s as $c) { print "&#$c;"; } print "\n";
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$s = pack("NNNN", 97, 98, 99, 100);
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$q = iconv("UCS-4BE", "ascii", $s);
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print $q; print "\n";
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?>
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=== end of ext/iconv/002.inc ===
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Test script and skipif code may be directly write into *.phpt.
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However, it is recommended to use other files for ease of writing
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test script. For instance, you can execute test script under
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ext/iconv as follows:
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./php -c /etc/php.ini-dist ext/iconv
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[How to help us]
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----------------
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If you find bug in PHP, you can submit bug report AND test script
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for us. You don't have to write complete script, just give us test
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script with following format. Please test the script and make sure
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you write the correct ACTUAL OUTPUT and EXPECTED OUTPUT before you
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submit.
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<?php
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/*
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Bug #12345
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substr() bug. Do not return expected string.
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ACTUAL OUTPUT
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XYXA
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EXPECTED OUTPUT
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ABCD
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*/
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$str = "XYZABCD";
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echo substr($str,3,7);
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?>
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