Modernize package and QA toolchain

- Use PSR-4 directory structure
- Use zend-coding-standard for CS checks
- Use phpunit 5/6/7 insted of 4/5
  - No custom bootstrap necessary
  - use namespaced TestCase
  - migrate `setExpectedException` to `expectException`
  - migrate `getMock` to `createMock`
  - use `::class` notation everywhere
- Use consistent license docblock everywhere
- Adopt lowest/locked/latest test matrix

Author: weierophinney

.travis.yml

@@ -1,32 +1,80 @@
+sudo: false
+
 language: php
 
+cache:
+  directories:
+    - $HOME/.composer/cache
+
 services:
   - redis-server
   - rabbitmq
 
-sudo: false
-
-cache:
-  directories:
-    - $HOME/.composer/cache
+env:
+  global:
+    - COMPOSER_ARGS="--no-interaction"
+    - COVERAGE_DEPS="php-coveralls/php-coveralls"
 
-php:
-  - 5.6
-  - 7.0
-  - 7.1
-  - 7.2
+matrix:
+  include:
+    - php: 5.6
+      env:
+        - DEPS=lowest
+    - php: 5.6
+      env:
+        - DEPS=locked
+        - LEGACY_DEPS="phpunit/phpunit"
+    - php: 5.6
+      env:
+        - DEPS=latest
+    - php: 7
+      env:
+        - DEPS=lowest
+    - php: 7
+      env:
+        - DEPS=locked
+        - LEGACY_DEPS="phpunit/phpunit"
+    - php: 7
+      env:
+        - DEPS=latest
+    - php: 7.1
+      env:
+        - DEPS=lowest
+    - php: 7.1
+      env:
+        - DEPS=locked
+        - CS_CHECK=true
+        - TEST_COVERAGE=true
+    - php: 7.1
+      env:
+        - DEPS=latest
+    - php: 7.2
+      env:
+        - DEPS=lowest
+    - php: 7.2
+      env:
+        - DEPS=locked
+    - php: 7.2
+      env:
+        - DEPS=latest
 
 before_install:
-  - composer self-update
-  - phpenv config-rm xdebug.ini
-  - composer require --no-update fabpot/php-cs-fixer:1.9.*
+  - if [[ $TEST_COVERAGE != 'true' ]]; then phpenv config-rm xdebug.ini || return 0 ; fi
 
-install: composer update $COMPOSER_FLAGS --prefer-dist
+install:
+  - travis_retry composer install $COMPOSER_ARGS --ignore-platform-reqs
+  - if [[ $LEGACY_DEPS != '' ]]; then travis_retry composer update $COMPOSER_ARGS --with-dependencies $LEGACY_DEPS ; fi
+  - if [[ $DEPS == 'latest' ]]; then travis_retry composer update $COMPOSER_ARGS ; fi
+  - if [[ $DEPS == 'lowest' ]]; then travis_retry composer update --prefer-lowest --prefer-stable $COMPOSER_ARGS ; fi
+  - if [[ $TEST_COVERAGE == 'true' ]]; then travis_retry composer require --dev $COMPOSER_ARGS $COVERAGE_DEPS ; fi
+  - stty cols 120 && composer show
 
 script:
-  - ./vendor/bin/phpunit -c ./tests/ --coverage-text
-  - ./vendor/bin/php-cs-fixer fix -v --dry-run --level=psr2 .
+  - if [[ $TEST_COVERAGE == 'true' ]]; then composer run-script test-coverage -- --verbose ; else composer run-script test -- --verbose ; fi
+  - if [[ $CS_CHECK == 'true' ]]; then composer cs-check ; fi
+
+after_script:
+  - if [[ $TEST_COVERAGE == 'true' ]]; then travis_retry vendor/bin/php-coveralls -v ; fi
 
 notifications:
-  irc: "irc.freenode.org#zftalk.dev"
   email: false

composer.json

@@ -21,16 +21,17 @@
         "php": "^5.6 || ^7.0"
     },
     "require-dev": {
-        "zendframework/zend-loader": "^2.0",
-        "sensiolabs/security-checker": "^1.3",
-        "symfony/yaml": "^2.7|^3.0|^4.0",
+        "doctrine/migrations": "^1.0",
         "guzzle/http": "^3.0",
         "guzzle/plugin-mock": "^3.0",
+        "mikey179/vfsStream": "^1.6",
         "php-amqplib/php-amqplib": "^2.0",
+        "phpunit/phpunit": "^5.7.27 || 6.5.8 || ^7.1.2",
         "predis/predis": "^1.0",
-        "phpunit/phpunit": "^4.7|^5.0",
-        "doctrine/migrations": "^1.0",
-        "mikey179/vfsStream": "^1.6"
+        "sensiolabs/security-checker": "^1.3",
+        "symfony/yaml": "^2.7 || ^3.0 || ^4.0",
+        "zendframework/zend-coding-standard": "~1.0.0",
+        "zendframework/zend-loader": "^2.0"
     },
     "suggest": {
         "ext-bcmath": "Required by Check\\CpuPerformance",
@@ -42,9 +43,13 @@
         "doctrine/migrations": "Required by Check\\DoctrineMigration"
     },
     "autoload": {
-        "psr-0": {
-            "ZendDiagnostics\\": "src/",
-            "ZendDiagnosticsTest\\": "tests/"
+        "psr-4": {
+            "ZendDiagnostics\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "ZendDiagnosticsTest\\": "test/"
         }
     },
     "config": {