From cad793322c8ce441e8e757aa427df77f14c699f3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20Pfeuffer?= <rene.pfeuffer@cloudogu.com>
Date: Thu, 5 Jul 2018 12:40:19 +0200
Subject: [PATCH] Add test for MapperModule

---
 .../api/v2/resources/MapperModuleTest.java    | 33 +++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 scm-webapp/src/test/java/sonia/scm/api/v2/resources/MapperModuleTest.java

diff --git a/scm-webapp/src/test/java/sonia/scm/api/v2/resources/MapperModuleTest.java b/scm-webapp/src/test/java/sonia/scm/api/v2/resources/MapperModuleTest.java
new file mode 100644
index 0000000000..a792d40e76
--- /dev/null
+++ b/scm-webapp/src/test/java/sonia/scm/api/v2/resources/MapperModuleTest.java
@@ -0,0 +1,33 @@
+package sonia.scm.api.v2.resources;
+
+import com.google.inject.binder.AnnotatedBindingBuilder;
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.when;
+
+public class MapperModuleTest {
+
+  @Test
+  public void shouldBindToClassesWithDefaultConstructorOnly() {
+    AnnotatedBindingBuilder binding = mock(AnnotatedBindingBuilder.class);
+    ArgumentCaptor<Class> captor = ArgumentCaptor.forClass(Class.class);
+    when(binding.to(captor.capture())).thenReturn(null);
+    new MapperModule() {
+      @Override
+      protected <T> AnnotatedBindingBuilder<T> bind(Class<T> clazz) {
+        return binding;
+      }
+    }.configure();
+    captor.getAllValues().forEach(this::verifyClassCanBeInstantiated);
+  }
+
+  private <T> T verifyClassCanBeInstantiated(Class<T> c) {
+    try {
+      return c.getConstructor().newInstance();
+    } catch (Exception e) {
+      throw new RuntimeException(e);
+    }
+  }
+}