API Upgrade to use new AssetStore service name

.travis.yml

@@ -22,7 +22,7 @@ matrix:
 before_script:
   - composer validate
   - composer install --dev --prefer-dist
-  - composer require silverstripe/config:1.0.x-dev silverstripe/framework:4.0.x-dev --prefer-dist
+  - composer require --update-with-dependencies silverstripe/framework:4.0.x-dev silverstripe/siteconfig:4.0.x-dev silverstripe/config:1.0.x-dev silverstripe/assets:1.0.x-dev silverstripe/versioned:1.0.x-dev --prefer-dist
   - if [[ $PHPCS_TEST ]]; then pyrus install pear/PHP_CodeSniffer; fi
   - phpenv rehash
 

README.md

@@ -302,7 +302,9 @@ of the `TestSessionEnvironment`, in order to share it with Behat CLI.
 
 Example: Retrieve the currently logged-in member
 
-	$env = Injector::inst()->get('TestSessionEnvironment');
+    use SilverStripe\TestSession\TestsessionEnvironment;
+
+	$env = Injector::inst()->get(TestSessionEnvironment::class);
 	$state = $env->getState();
 	if(isset($state->session['loggedInAs'])) {
 		$member = \Member::get()->byID($state->session['loggedInAs']);

composer.json

@@ -28,7 +28,7 @@
     "behat/mink-extension": "^2.1",
     "behat/mink-selenium2-driver": "^1.3",
     "symfony/dom-crawler": "^3",
-    "silverstripe/testsession": "2.0.0-alpha6",
+    "silverstripe/testsession": "~2.0.0@alpha",
     "silverstripe/framework": "^4@dev",
     "symfony/finder": "^3.2"
   },

docs/webservice-mocking.md

@@ -114,6 +114,7 @@ Open the already generated `FeatureContext.php` file and add the following code.
 
 ```php
 // mysite/tests/behat/features/bootstrap/Context/FeatureContext.php
+use namespace SilverStripe\TestSession\TestSessionStubCodeWriter;
 class FeatureContext extends SilverStripeContext {
 
 	protected $stubCodeWriter;
@@ -121,7 +122,7 @@ class FeatureContext extends SilverStripeContext {
 	public function __construct() {
 		// ...
 
-		$this->stubCodeWriter = Injector::inst()->get('TestSessionStubCodeWriter');
+		$this->stubCodeWriter = Injector::inst()->get(TestSessionStubCodeWriter::class);
 	}
 
 	/**

src/Context/FixtureContext.php

@@ -761,12 +761,11 @@ class FixtureContext implements Context
     }
 
     /**
-     *
      * @return AssetStore
      */
     protected function getAssetStore()
     {
-        return singleton('AssetStore');
+        return Injector::inst()->get(AssetStore::class);
     }
 
     /**