diff --git a/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/yaml/YamlLanguageInjectorTest.java b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/yaml/YamlLanguageInjectorTest.java
new file mode 100644
index 000000000..36642bbaf
--- /dev/null
+++ b/src/test/java/fr/adrienbrault/idea/symfony2plugin/tests/config/yaml/YamlLanguageInjectorTest.java
@@ -0,0 +1,63 @@
+package fr.adrienbrault.idea.symfony2plugin.tests.config.yaml;
+
+import com.intellij.testFramework.fixtures.InjectionTestFixture;
+import fr.adrienbrault.idea.symfony2plugin.tests.SymfonyLightCodeInsightFixtureTestCase;
+import org.jetbrains.annotations.NotNull;
+
+public class YamlLanguageInjectorTest extends SymfonyLightCodeInsightFixtureTestCase {
+
+    private InjectionTestFixture injectionTestFixture;
+
+    @Override
+    public void setUp() throws Exception {
+        super.setUp();
+
+        injectionTestFixture = new InjectionTestFixture(myFixture);
+    }
+
+    public void testLanguageInjections() {
+        assertExpressionLanguageIsInjectedAtCaret(
+            "services.yaml",
+            "services:\n" +
+            "  App\\Service\\ExampleService:\n" +
+            "    arguments:\n" +
+            "      $example: '@=service(<caret>'\n"
+        );
+        
+        assertExpressionLanguageIsInjectedAtCaret(
+            "services.yaml",
+            "services:\n" +
+            "  App\\Service\\ExampleService:\n" +
+            "    calls:\n" +
+            "      - example: ['@=service(<caret>']\n"
+        );
+
+        assertExpressionLanguageIsInjectedAtCaret(
+            "services.yaml",
+            "services:\n" +
+            "  App\\Service\\ExampleService:\n" +
+            "    properties:\n" +
+            "      example: '@=service(<caret>']\n"
+        );
+
+        assertExpressionLanguageIsInjectedAtCaret(
+            "services.yaml",
+            "services:\n" +
+            "  App\\Service\\ExampleService:\n" +
+            "    configurator: ['@=service(<caret>', 'configure']\n"
+        );
+
+        assertExpressionLanguageIsInjectedAtCaret(
+            "routing.yaml",
+            "app.contact:\n" +
+            "  path: /contact\n" +
+            "  controller: 'App\\Controller\\DefaultController::contact'\n" +
+            "  condition: 'context.getMethod() in <caret>'\n"
+        );
+    }
+
+    private void assertExpressionLanguageIsInjectedAtCaret(@NotNull String fileName, @NotNull String text) {
+        myFixture.configureByText(fileName, text);
+        injectionTestFixture.assertInjectedLangAtCaret("Symfony Expression Language");
+    }
+}