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Tests are grouped into "suites". They are just directories. Suites can have subdirectories if you want to group them even more. Running a suite will run all sub-suites.

  • quick - High quality high signal tests. No duplicated logic. If you aren't sure, your test doesn't belong here.
  • slow - Slower full featured tests. Grouped into sub-suites. By default put your test here.
  • spec - Tests associated with the official PHP language specification. https://github.com/php/php-langspec/
  • zend/good - Passing tests from Zend's suite.

Examples how to run them

  • Quick suite with the JIT on - test/run test/quick

  • Zend tests just with the interpreter in RepoAuthoritative mode - test/run test/zend/good -m interp -r

  • Slow tests with the JIT in PGO mode - test/run test/slow -m pgo

  • PHP Specification tests with JIT - test/run test/spec

  • Run everything that is supposed to pass - test/run all

  • Run just the slow Hack typechecker tests - test/run --typechecker slow

File Layout

The format is the same as Zend's .phpt but instead of sections it is separate files with the section name converted to an extension. This allows you to easily run the .php file without first running the test suite.

These are the allowed extensions:

  • .php - The source of the test.
  • .php.expect - The exact string expected output.
  • .php.expectf - The exact string expected output with formating characters.
  • .php.hhvm.expect - The exact string expected output. Same as .php.expect.
  • .php.hhvm.expectf - The exact string expected output with formating characters. Same as .php.expectf.
  • .php.typechecker.expect - The exact string expected output for typechecker tests.
  • .php.typechecker.expectf - The exact string expected output for typechecker tests with formatting characters.
  • .php.expectregex - A regex that matches the output.
  • .php.in - When you run the test, the input will be obtained from here.
  • .php.out - When you run the test, the output will be stored here.
  • .php.opts - Runtime options to pass to hhvm.
  • .php.cli_args - Command line arguments to the test file (e.g., $argv options).
  • .php.serial - The test will always be put in the serial bucket to be run sequentially with other serial tests so as to avoid any timing problems or collisions.
  • .php.hphp_opts - Options passed to hphp when generating a bytecode repo.
  • .php.diff or hhas.diff - The diff for .expect tests.
  • .hhas - HipHop Assembly.
  • .php.norepo - don't run the test in repo mode
  • .php.noserver - don't run the test in server mode
  • .php.hhconfig - A blank or syntactically valid Hack typechecker configuration file if you want the test to be able to be run in typechecker mode.
  • inc.php - Use this extension for require or include files if you are going to have a typechecker test that uses them. For now, make sure they are in the same directory as the test. They will be copied along with the core test files when the test runner is executing.

You must have one .php (or .php.type-errors file -- see below); if you are running tests against HHVM, you must have one and only one of .php.expect, .php.hhvm.expect, .php.expectf, .php.hhvm.expectf, or .php.expectregex; if you are running tests against the typechecker, you must have one and only one of .php.typechecker.expect or .php.typechecker.expectf, and you must have a .php.hhconfig file as well; and the rest are optional.

NOTE: If you are using a .php.type-errors file, then all the files suffixes listed in the paragraph above will include type-errors (e.g., .php.type-errors.hhvm.expectf).

NOTE: You can have both a .php.[hhvm].expect[f] and a .php.typechecker.expect[f].

Any suite can have a config.hdf file in it that will be used. If one isn't present, then the parent suite it checked recursively until we use test/config.hdf.

If a suite contains an hphpd.ini file, all of the files in the suite will be run with the -m debug and --debug-config _dir_/hphpd.ini switches added to the command line. (_dir_ will be replaced by path of the suite directory.)

Name your test in a descriptive manner and when in doubt break your test into many files. You can use comments too so future engineers know if it is a real breakage or they need to change the expected output.

.php.type-errors Source File Suffix

The test runner will look for source code files with the .php.type-errors suffix as well as .php files. The use case for this type of file is create a test runner compliant source file, but to also allow the actual typechecker hh_client ignore the file when run on its own. For example, in our doc repo https://github.com/hhvm/user-documentation, we use these files to have a clean hh_client run on our examples, but still can have examples showing typechecker errors as well.

Format Characters

These can appear in .expectf or typechecker.expectf files.

Char Description Regex
%e Path separator /
%s Any characters except newlines [^\r\n]+
%S Optionally any characters except newlines [^\r\n]*
%a Any characters .+
%A Optionally any characters .*
%w Optional whitespace \s*
%i Integer with optional sign [+-]?\d+
%d Digits \d+
%x Hex [0-9a-fA-F]+
%f Float [+-]?.?\d+.?\d
%c Character .
%r...%r The ... is a regex The part that is ...