Test component composer integration, bump gax requirement (#507)

* Test component composer integeration, bump gax requirement

* Use dry-run and repository path

* Switch to exec()

* Add to travis build

* Skip if grpc missing

.travis.yml

@@ -18,6 +18,7 @@ before_script:
 
 script:
   - ./dev/sh/tests
+  - ./dev/sh/test-composer
   - vendor/bin/phpcs --standard=./phpcs-ruleset.xml
   - ./dev/sh/build-docs
 

dev/sh/test-composer

@@ -0,0 +1,5 @@
+#!/bin/bash
+
+echo "Checking Component Installability"
+
+php $(dirname $0)/../../tests/component/TestComposerInstall.php

dev/sh/tests

@@ -5,19 +5,19 @@ set -e
 function unit () {
   echo "Running Unit Test Suite"
 
-  vendor/bin/phpunit
+  $(dirname $0)/../../vendor/bin/phpunit
 }
 
 function system () {
   echo "Running System Test Suite"
 
-  vendor/bin/phpunit -c phpunit-system.xml.dist
+  $(dirname $0)/../../vendor/bin/phpunit -c phpunit-system.xml.dist
 }
 
 function snippets() {
   echo "Running Snippet Test Suite"
 
-  vendor/bin/phpunit -c phpunit-snippets.xml.dist
+  $(dirname $0)/../../vendor/bin/phpunit -c phpunit-snippets.xml.dist
 }
 
 unit

src/ErrorReporting/composer.json

@@ -5,9 +5,8 @@
     "minimum-stability": "stable",
     "require": {
         "ext-grpc": "*",
-        "google/cloud-core": "^1.0",
         "google/proto-client-php": "^0.13",
-        "google/gax": "^0.8"
+        "google/gax": "^0.9"
     },
     "extra": {
         "component": {

src/Monitoring/composer.json

@@ -5,9 +5,8 @@
     "minimum-stability": "stable",
     "require": {
         "ext-grpc": "*",
-        "google/cloud-core": "^1.0",
         "google/proto-client-php": "^0.13",
-        "google/gax": "^0.8"
+        "google/gax": "^0.9"
     },
     "extra": {
         "component": {

tests/component/TestComposerInstall.php

@@ -0,0 +1,76 @@
+<?php
+
+/**
+ * Copyright 2017 Google Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * This file tests that all google-cloud-php components can be installed alongside
+ * each other at their latest versions.
+ */
+
+use Google\Cloud\Dev\GetComponentsTrait;
+
+if (!extension_loaded('grpc')) {
+    echo "gRPC Not Installed.";
+    exit(0);
+}
+
+include __DIR__ .'/../../vendor/autoload.php';
+
+define('BASE_PATH', __DIR__ .'/../..');
+
+class GetComponentsImpl
+{
+    use GetComponentsTrait;
+
+    public function components()
+    {
+        return $this->getComponents(
+            BASE_PATH .'/src',
+            BASE_PATH .'/composer.json'
+        );
+    }
+}
+
+$composer = [];
+$composer['require'] = [];
+$composer['repositories'] = [];
+$composer['minimum-stability'] = 'dev';
+
+foreach((new GetComponentsImpl)->components() as $component) {
+    if ($component['id'] === 'google-cloud') continue;
+    if ($component['id'] === 'cloud-core') continue;
+
+    $composer['require']['google/'. $component['id']] = '*';
+    $composer['repositories'][] = [
+        'type' => 'path',
+        'url' => BASE_PATH .'/'. $component['path']
+    ];
+}
+
+file_put_contents(__DIR__ .'/composer.json', json_encode($composer, JSON_UNESCAPED_SLASHES));
+
+$out = [];
+$return = null;
+exec('composer install --dry-run --working-dir='. __DIR__ .' 2>&1', $out, $return);
+unlink(__DIR__ .'/composer.json');
+
+if ($return !== 0) {
+    echo "Problem installing components!" . PHP_EOL . PHP_EOL;
+
+    echo implode("\n", $out);
+    exit(1);
+}