Build/Test tools: Get Travis builds working on HHVM again.

This change moves to specifying the PHPUnit version for all PHP versions, and fixes an issue where the Composer global bin directory is not at `~/.composer/vendor/bin` on the boxes that are used for HHVM builds.

See #40100


git-svn-id: https://develop.svn.wordpress.org/trunk@40269 602fd350-edb4-49c9-b593-d223f7449a82

.travis.yml

@@ -9,7 +9,7 @@ env:
     - WP_TRAVISCI=travis:phpunit
 matrix:
   include:
-  - php: 7
+  - php: 7.0
     env: WP_TRAVISCI=travis:js
   - php: 5.2
   - php: 5.3
@@ -52,17 +52,37 @@ before_install:
   fi
 before_script:
 - |
+  # Remove Xdebug for a huge performance increase, but not from nightly or hhvm:
   stable='^[0-9\.]+$'
   if [[ "$TRAVIS_PHP_VERSION" =~ $stable ]]; then
     phpenv config-rm xdebug.ini
   fi
-- export PATH="$HOME/.composer/vendor/bin:$PATH"
 - |
-  if [[ ${TRAVIS_PHP_VERSION:0:2} == "7." ]]; then
-    composer global require "phpunit/phpunit=5.7.*"
-  elif [[ ${TRAVIS_PHP_VERSION:0:3} != "5.2" ]]; then
-    composer global require "phpunit/phpunit=4.8.*"
+  # Export Composer's global bin dir to PATH, but not on PHP 5.2:
+  if [[ ${TRAVIS_PHP_VERSION:0:3} != "5.2" ]]; then
+    composer config --list --global
+    export PATH=`composer config --list --global | grep '\[home\]' | { read a; echo "${a#* }/vendor/bin:$PATH"; }`
   fi
+- |
+  # Install the specified version of PHPUnit depending on the PHP version:
+  case "$TRAVIS_PHP_VERSION" in
+    7.1|7.0|hhvm|nightly)
+      echo "Using PHPUnit 5.7"
+      composer global require "phpunit/phpunit=5.7.*"
+      ;;
+    5.6|5.5|5.4|5.3)
+      echo "Using PHPUnit 4.8"
+      composer global require "phpunit/phpunit=4.8.*"
+      ;;
+    5.2)
+      # Do nothing, use default PHPUnit 3.6.x
+      echo "Using default PHPUnit, hopefully 3.6"
+      ;;
+    *)
+      echo "No PHPUnit version handling for PHP version $TRAVIS_PHP_VERSION"
+      exit 1
+      ;;
+  esac
 - npm --version
 - node --version
 - nvm install 6.9.1
@@ -73,11 +93,13 @@ before_script:
 - phpenv versions
 - php --version
 - |
+  # Debug PHP extensions, but not on HHVM because the command hangs indefinitely:
   if [[ "$TRAVIS_PHP_VERSION" != 'hhvm' ]]; then
     php -m
   fi
 - npm --version
 - node --version
+- which phpunit
 - phpunit --version
 - curl --version
 - grunt --version