## GWT

GWT is the official open source project for GWT releases 2.5 and onwards.

In this document you have some quick instructions to build the SDK from source code and to run its tests.

For a more detailed documentation visit our web site. If you are interested in contributing with the project, please read the Making GWT better section.

• In order to build GWT, java and ant are required in your system.

• Optional: if you want to compile elemental you need python and g++ installed.

• You need the GWT tools repository checked out and up-to-date. By default it is expected to be found at ../tools. You can override the default location using the GWT_TOOLS environment variable or passing -Dgwt.tools= argument to ant.

• To create the SDK distribution files run:

  $ ant clean elemental dist-dev

  or if you don't have python and g++ just run

  $ ant clean dist-dev

  Then you will get all .jar files in the folder build/lib and the redistributable file will be: build/dist/gwt-0.0.0.zip

  if you want to specify a different version number run:

  $ ant clean elemental dist-dev -Dgwt.version=x.x.x

• To compile everything including examples you have to run

  $ ant clean elemental dist

• In GWT we have some conventions so as all code written by contributors look similar being easier to review.

• After you make any modification, run this command to compile everything including tests, to check APIs, and to verify code style. It shouldn't take longer than 3-4 minutes.

  $ ant compile.tests apicheck checkstyle -Dprecompile.disable=true

• Previously to run any test you have to set some environment variables to guarantee that they are run in the same conditions for all developers.

  In a Unix like platform you can use the export command:

  $ export TZ=America/Los_Angeles ANT_OPTS=-Dfile.encoding=UTF-8

  But in Windows™ you have to set the time-zone in your control panel, and the environment variables using the command set.

• Finally you can run all test suites with the following command, but be prepared because it could take hours, and probably it would fail because of timeouts, etc.

  $ ant test

• Thus, you might want to run only certain tests so as you can focus on checking the modifications you are working on.

  GWT build scripts use specific ant tasks and a bunch of system properties listed in the following table to specify which tests to run and how.

  For instance to run the task test in the module user you have to change to the user folder and run ant with the task as argument, adding any other property with the -D flag:

  $ ( cd user && ant test -Dtest.emma.htmlunit.disable=true ; cd .. )

  Module	Task	Property to skip	Description
  dev	test	test.dev.disable	GWT compiler & dev libraries
  codeserver	test	test.codeserver.disable	SuperDevMode server
  user	test	test.user.disable	GWT user API and JRE emulation
  user	test.nongwt	test.nongwt.disable	Run tests that not require GWTTestCase
  user	test.dev.htmlunit	test.dev.htmlunit.disable	Run dev-mode tests with HtmlUnit
  user	test.web.htmlunit	test.web.htmlunit.disable	Run web-mode tests with HtmlUnit
  user	test.draft.htmlunit	test.draft.htmlunit.disable	Run draft compiled HtmlUnit tests
  user	test.nometa.htmlunit	test.nometa.htmlunit.disable	Run -XdisableClassMetadata tests with HtmlUnit
  user	test.emma.htmlunit	test.emma.htmlunit.disable	Run emma tests with HtmlUnit
  user	test.coverage.htmlunit	test.coverage.htmlunit.disable	Run tests for coverage support
  user	test.dev.selenium	test.dev.selenium.disable	Run dev-mode tests using Selenium RC servers
  user	test.web.selenium	test.web.selenium.disable	Run web tests using Selenium RC servers
  user	test.draft.selenium	test.draft.selenium.disable	Run draft compiled tests using Selenium RC servers
  user	test.nometa.selenium	test.nometa.selenium.disable	Run -XdisableClassMetadata tests using Selenium RC servers
  user	test.emma.selenium	test.emma.selenium.disable	Run emma tests with Selenium RC servers
  requestfactory	test	test.requestfactory.disable	Request Factory library
  elemental	test	test.elemental.disable	Elemental library
  elemental	test.nongwt	test.nongwt.disable	Run elemental tests that not require GWTTestCase
  elemental	test.dev.htmlunit	test.dev.htmlunit.disable	Run elemental dev-mode tests with HtmlUnit
  elemental	test.web.htmlunit	test.web.htmlunit.disable	Run elemental web-mode tests with HtmlUnit
  tools	test	test.tools.disable	Some tools used in GWT development

  Additionally you can utilize some variables to filter which test to run in each task:

  Module	Task	Properties	Default
  dev/core	test	gwt.junit.testcase.dev.core.includes	**/com/google/**/*Test.class

              |                                       | gwt.junit.testcase.dev.core.excludes |
  

  user | test | gwt.junit.testcase.includes | **/*Suite.class user | test.nongwt | gwt.nongwt.testcase.includes | **/*JreSuite.class | | gwt.nongwt.testcase.excludes | user | test.web.* test.draft.* test.nometa.* | gwt.junit.testcase.web.includes | **/*Suite.class | | gwt.junit.testcase.web.excludes | **/*JsInteropSuite.class,**/*JreSuite.class,***/OptimizedOnly* user | test.dev.* test.emma.* | gwt.junit.testcase.dev.includes | **/*Suite.class | | gwt.junit.testcase.dev.excludes | **/*JsInteropSuite.class,**/*JreSuite.class,***/OptimizedOnly*

• Run all tests in dev

  $ ( cd dev && ant test ; cd .. )

  Note: that the last `cd ..' is only needed in Windows.

• There is another option to do the same but without changing to the module folder. We have to specify the module as the ant task, and the task as a target argument.

  $ ant dev -Dtarget=test

• Run all tests in codeserver

  $ ( cd dev/codeserver && ant test )

  or

  $ ant codeserver -Dtarget=test -Dtest.dev.disable=true

  Note: that we disable dev tests because code server depends on dev and we don`t want to run its tests.

• Run all tests in elemental:

  $ ( cd elemental && ant test.nongwt )

  or

  $ ant elemental -Dtarget=test -Dtest.dev.disable=true -Dtest.user.disable=true

  Note: that we have to disable dev and user tests because elemental depends on both.

• Run all tests in tools

  $ ant tools -Dtarget=test -Dtest.dev.disable=true -Dtest.user.disable=true

• Run only the JsniRefTest in dev

  $ ant dev -Dtarget=test \
      -Dgwt.junit.testcase.dev.core.includes="**/JsniRefTest.class"
  

• Run a couple of tests in dev

  $ ant dev -Dtarget=test \
      -Dgwt.junit.testcase.dev.core.includes="**/JsniRefTest.class,**/JsParserTest.class"
  

  Note: that you have to use regular expressions separated by comma to select the test classes to execute.

• Run all Jre tests in user, they should take not longer than 3min. We have two ways to run them. Although the second case is more complex it is here to know how disable properties work.

  $ ( cd user && ant test.nongwt )

  or

  $ ant user -Dtarget=test
         -Dtest.dev.disable=true \
         -Dtest.codeserver.disable=true \
         -Dtest.requestfactory.disable=true \
         -Dtest.elemental.disable=true \
         -Dtest.tools.disable=true \
         -Dtest.dev.htmlunit.disable=true \
         -Dtest.web.htmlunit.disable=true \
         -Dtest.coverage.htmlunit.disable=true \
         -Dtest.dev.selenium.disable=true \
         -Dtest.draft.htmlunit.disable=true \
         -Dtest.draft.selenium.disable=true \
         -Dtest.emma.htmlunit.disable=true \
         -Dtest.emma.selenium.disable=true \
         -Dtest.nometa.htmlunit.disable=true \
         -Dtest.nometa.selenium.disable=true \
         -Dtest.web.selenium.disable=true
  

  Note: that we have to set all disable variables but test.nongwt.disable

• Run certain Jre tests in the user module.

  $ ( cd user && ant test.nongwt -Dgwt.nongwt.testcase.includes="**/I18NJreSuite.class" )

• Run all GWT tests in user using htmlunit in dev mode.

  $ ( cd user && ant test.dev.htmlunit )