diff --git a/scm-it/src/test/java/sonia/scm/it/I18nServletITCase.java b/scm-it/src/test/java/sonia/scm/it/I18nServletITCase.java
new file mode 100644
index 0000000000..6597880665
--- /dev/null
+++ b/scm-it/src/test/java/sonia/scm/it/I18nServletITCase.java
@@ -0,0 +1,19 @@
+package sonia.scm.it;
+
+import org.junit.Test;
+import sonia.scm.it.utils.ScmRequests;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class I18nServletITCase {
+
+  @Test
+  public void shouldGetCollectedPluginTranslations() {
+    ScmRequests.start()
+      .requestPluginTranslations("de")
+      .assertStatusCode(200)
+      .assertSingleProperty(value -> assertThat(value).isNotNull(), "scm-git-plugin")
+      .assertSingleProperty(value -> assertThat(value).isNotNull(), "scm-hg-plugin")
+      .assertSingleProperty(value -> assertThat(value).isNotNull(), "scm-svn-plugin");
+  }
+}
diff --git a/scm-it/src/test/java/sonia/scm/it/utils/ScmRequests.java b/scm-it/src/test/java/sonia/scm/it/utils/ScmRequests.java
index 69c79c37bf..9d08594006 100644
--- a/scm-it/src/test/java/sonia/scm/it/utils/ScmRequests.java
+++ b/scm-it/src/test/java/sonia/scm/it/utils/ScmRequests.java
@@ -52,7 +52,12 @@ public class ScmRequests {
     setUsername(username);
     setPassword(password);
     return new ChangePasswordResponse<>(applyPUTRequest(RestUtil.REST_BASE_URL.resolve("users/"+userPathParam+"/password").toString(), VndMediaType.PASSWORD_OVERWRITE, TestData.createPasswordChangeJson(password,newPassword)), null);
+  }
 
+  @SuppressWarnings("unchecked")
+  public ModelResponse requestPluginTranslations(String language) {
+    Response response = applyGETRequest(RestUtil.BASE_URL.resolve("locales/" + language + "/plugins.json").toString());
+    return new ModelResponse(response, null);
   }
 
   /**
@@ -90,6 +95,11 @@ public class ScmRequests {
    */
   private Response applyGETRequestWithQueryParams(String url, String params) {
     LOG.info("GET {}", url);
+    if (username == null || password == null){
+      return RestAssured.given()
+        .when()
+        .get(url + params);
+    }
     return RestAssured.given()
       .auth().preemptive().basic(username, password)
       .when()
diff --git a/scm-plugins/scm-git-plugin/src/main/js/ProtocolInformation.js b/scm-plugins/scm-git-plugin/src/main/js/ProtocolInformation.js
index d8eb4ae0e0..f17dc5e2e9 100644
--- a/scm-plugins/scm-git-plugin/src/main/js/ProtocolInformation.js
+++ b/scm-plugins/scm-git-plugin/src/main/js/ProtocolInformation.js
@@ -2,9 +2,11 @@
 import React from "react";
 import { repositories } from "@scm-manager/ui-components";
 import type { Repository } from "@scm-manager/ui-types";
+import { translate } from "react-i18next";
 
 type Props = {
-  repository: Repository
+  repository: Repository,
+  t: string => string
 }
 
 class ProtocolInformation extends React.Component<Props> {
@@ -18,11 +20,11 @@ class ProtocolInformation extends React.Component<Props> {
 
     return (
       <div>
-        <h4>Clone the repository</h4>
+        <h4>{t("scm-git-plugin.information.clone")}</h4>
         <pre>
           <code>git clone {href}</code>
         </pre>
-        <h4>Create a new repository</h4>
+        <h4>{t("scm-git-plugin.information.create")}</h4>
         <pre>
           <code>
             git init {repository.name}
@@ -39,7 +41,7 @@ class ProtocolInformation extends React.Component<Props> {
             <br />
           </code>
         </pre>
-        <h4>Push an existing repository</h4>
+        <h4>{t("scm-git-plugin.information.replace")}</h4>
         <pre>
           <code>
             git remote add origin {href}
@@ -54,4 +56,4 @@ class ProtocolInformation extends React.Component<Props> {
 
 }
 
-export default ProtocolInformation;
+export default translate("plugins")(ProtocolInformation);
diff --git a/scm-plugins/scm-git-plugin/src/main/resources/locales/de/plugins.json b/scm-plugins/scm-git-plugin/src/main/resources/locales/de/plugins.json
index a405e36d23..1dc0e254c2 100644
--- a/scm-plugins/scm-git-plugin/src/main/resources/locales/de/plugins.json
+++ b/scm-plugins/scm-git-plugin/src/main/resources/locales/de/plugins.json
@@ -1,5 +1,9 @@
 {
-  "git": {
-    "description": "die git repo ist super "
+  "scm-git-plugin": {
+    "information": {
+      "clone" : "Repository Klonen",
+      "create" : "Neue Repository erstellen",
+      "replace" : "Eine existierende Repository aktualisieren"
+    }
   }
 }
diff --git a/scm-plugins/scm-git-plugin/src/main/resources/locales/en/plugins.json b/scm-plugins/scm-git-plugin/src/main/resources/locales/en/plugins.json
index 0412a162b3..65594bae19 100644
--- a/scm-plugins/scm-git-plugin/src/main/resources/locales/en/plugins.json
+++ b/scm-plugins/scm-git-plugin/src/main/resources/locales/en/plugins.json
@@ -1,5 +1,9 @@
 {
-  "git": {
-    "description": "the git repo is great "
+  "scm-git-plugin": {
+    "information": {
+      "clone" : "Clone the repository",
+      "create" : "Create a new repository",
+      "replace" : "Push an existing repository"
+    }
   }
 }
diff --git a/scm-plugins/scm-hg-plugin/src/main/js/ProtocolInformation.js b/scm-plugins/scm-hg-plugin/src/main/js/ProtocolInformation.js
index 03fc41450a..6a55578926 100644
--- a/scm-plugins/scm-hg-plugin/src/main/js/ProtocolInformation.js
+++ b/scm-plugins/scm-hg-plugin/src/main/js/ProtocolInformation.js
@@ -2,9 +2,11 @@
 import React from "react";
 import { repositories } from "@scm-manager/ui-components";
 import type { Repository } from "@scm-manager/ui-types";
+import { translate } from "react-i18next";
 
 type Props = {
-  repository: Repository
+  repository: Repository,
+  t: string => string
 }
 
 class ProtocolInformation extends React.Component<Props> {
@@ -17,11 +19,11 @@ class ProtocolInformation extends React.Component<Props> {
     }
     return (
       <div>
-        <h4>Clone the repository</h4>
+        <h4>{t("scm-hg-plugin.information.clone")}</h4>
         <pre>
           <code>hg clone {href}</code>
         </pre>
-        <h4>Create a new repository</h4>
+        <h4>{t("scm-hg-plugin.information.create")}</h4>
         <pre>
           <code>
             hg init {repository.name}
@@ -41,7 +43,7 @@ class ProtocolInformation extends React.Component<Props> {
             <br />
           </code>
         </pre>
-        <h4>Push an existing repository</h4>
+        <h4>{t("scm-hg-plugin.information.replace")}</h4>
         <pre>
           <code>
             # add the repository url as default to your .hg/hgrc e.g:
@@ -59,4 +61,4 @@ class ProtocolInformation extends React.Component<Props> {
 
 }
 
-export default ProtocolInformation;
+export default translate("plugins")(ProtocolInformation);
diff --git a/scm-plugins/scm-hg-plugin/src/main/resources/locales/de/plugins.json b/scm-plugins/scm-hg-plugin/src/main/resources/locales/de/plugins.json
index 49a3d97570..0824a4ad38 100644
--- a/scm-plugins/scm-hg-plugin/src/main/resources/locales/de/plugins.json
+++ b/scm-plugins/scm-hg-plugin/src/main/resources/locales/de/plugins.json
@@ -1,5 +1,9 @@
 {
-  "hg": {
-    "description": "die hg repo ist super "
+  "scm-hg-plugin": {
+    "information": {
+      "clone" : "Repository Klonen",
+      "create" : "Neue Repository erstellen",
+      "replace" : "Eine existierende Repository aktualisieren"
+    }
   }
 }
diff --git a/scm-plugins/scm-hg-plugin/src/main/resources/locales/en/plugins.json b/scm-plugins/scm-hg-plugin/src/main/resources/locales/en/plugins.json
index 28c628e81e..4ec1d4e4d2 100644
--- a/scm-plugins/scm-hg-plugin/src/main/resources/locales/en/plugins.json
+++ b/scm-plugins/scm-hg-plugin/src/main/resources/locales/en/plugins.json
@@ -1,5 +1,9 @@
 {
-  "hg": {
-    "description": "the hg repo is great "
+  "scm-hg-plugin": {
+    "information": {
+      "clone" : "Clone the repository",
+      "create" : "Create a new repository",
+      "replace" : "Push an existing repository"
+    }
   }
 }
diff --git a/scm-plugins/scm-svn-plugin/src/main/js/ProtocolInformation.js b/scm-plugins/scm-svn-plugin/src/main/js/ProtocolInformation.js
index 0ba195887f..bcfe223b83 100644
--- a/scm-plugins/scm-svn-plugin/src/main/js/ProtocolInformation.js
+++ b/scm-plugins/scm-svn-plugin/src/main/js/ProtocolInformation.js
@@ -2,9 +2,11 @@
 import React from "react";
 import { repositories } from "@scm-manager/ui-components";
 import type { Repository } from "@scm-manager/ui-types";
+import { translate } from "react-i18next";
 
 type Props = {
-  repository: Repository
+  repository: Repository,
+  t: string => string
 }
 
 class ProtocolInformation extends React.Component<Props> {
@@ -17,7 +19,7 @@ class ProtocolInformation extends React.Component<Props> {
     }
     return (
       <div>
-        <h4>Checkout the repository</h4>
+        <h4>{t("scm-svn-plugin.information.checkout")}</h4>
         <pre>
           <code>svn checkout {href}</code>
         </pre>
@@ -27,4 +29,4 @@ class ProtocolInformation extends React.Component<Props> {
 
 }
 
-export default ProtocolInformation;
+export default translate("plugins")(ProtocolInformation);
diff --git a/scm-plugins/scm-svn-plugin/src/main/resources/locales/de/plugins.json b/scm-plugins/scm-svn-plugin/src/main/resources/locales/de/plugins.json
index 1c25a5bcf5..7c58498ef1 100644
--- a/scm-plugins/scm-svn-plugin/src/main/resources/locales/de/plugins.json
+++ b/scm-plugins/scm-svn-plugin/src/main/resources/locales/de/plugins.json
@@ -1,5 +1,7 @@
 {
-  "svn": {
-    "description": "die svn repo ist super "
+  "scm-svn-plugin": {
+    "information": {
+      "checkout" : "Repository auschecken"
+    }
   }
 }
diff --git a/scm-plugins/scm-svn-plugin/src/main/resources/locales/en/plugins.json b/scm-plugins/scm-svn-plugin/src/main/resources/locales/en/plugins.json
index cbfbaac63b..07b34baf10 100644
--- a/scm-plugins/scm-svn-plugin/src/main/resources/locales/en/plugins.json
+++ b/scm-plugins/scm-svn-plugin/src/main/resources/locales/en/plugins.json
@@ -1,5 +1,7 @@
 {
-  "svn": {
-    "description": "the svn repo is great "
+  "scm-svn-plugin": {
+    "information": {
+      "checkout" : "Checkout repository"
+    }
   }
 }
diff --git a/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java b/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java
index 00d1f3aaf4..d0c78bf1f5 100644
--- a/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java
+++ b/scm-webapp/src/main/java/sonia/scm/web/i18n/I18nServlet.java
@@ -4,7 +4,6 @@ package sonia.scm.web.i18n;
 import com.fasterxml.jackson.databind.ObjectMapper;
 import com.github.legman.Subscribe;
 import com.google.inject.Singleton;
-import com.sun.org.apache.regexp.internal.RE;
 import lombok.extern.slf4j.Slf4j;
 import sonia.scm.NotFoundException;
 import sonia.scm.SCMContext;
@@ -34,7 +33,7 @@ import java.util.function.Function;
 
 
 /**
- * Collect
+ * Collect the plugin translations.
  */
 @Singleton
 @WebElement(value = I18nServlet.PATTERN, regex = true)
@@ -47,9 +46,8 @@ public class I18nServlet extends HttpServlet {
   public static final String CACHE_NAME = "sonia.cache.plugins.translations";
 
   private final UberClassLoader uberClassLoader;
-  private final Cache<String, HashMap<String, String>> cache;
-  private RE languagePathPostfix = new RE(".*(\\-[A-Z]+)/.*");
-  private ObjectMapper objectMapper = new ObjectMapper();
+  private final Cache<String, Map> cache;
+  private static ObjectMapper objectMapper = new ObjectMapper();
 
 
   @Inject
@@ -58,18 +56,18 @@ public class I18nServlet extends HttpServlet {
     this.cache = cacheManager.getCache(CACHE_NAME);
   }
 
-  @Subscribe
+  @Subscribe(async = false)
   public void handleRestartEvent(RestartEvent event) {
-    log.info("clear cache on restart event with reason {}", event.getReason());
+    log.info("Clear cache on restart event with reason {}", event.getReason());
     cache.clear();
   }
 
-  public Map<String, String> getCollectedJson(String path,
-                                              Function<String, Optional<HashMap<String, String>>> jsonFileProvider,
-                                              BiConsumer<String, HashMap<String, String>> createdJsonFileConsumer) throws NotFoundException {
+  private Map getCollectedJson(String path,
+                               Function<String, Optional<Map>> jsonFileProvider,
+                               BiConsumer<String, Map> createdJsonFileConsumer) {
     return Optional.ofNullable(jsonFileProvider.apply(path)
       .orElseGet(() -> {
-          Optional<HashMap<String, String>> createdFile = collectJsonFile(path);
+          Optional<Map> createdFile = collectJsonFile(path);
           createdFile.ifPresent(map -> createdJsonFileConsumer.accept(path, map));
           return createdFile.orElse(null);
         }
@@ -82,9 +80,9 @@ public class I18nServlet extends HttpServlet {
       response.setContentType("application/json");
       PrintWriter out = response.getWriter();
       String path = req.getServletPath();
-      Function<String, Optional<HashMap<String, String>>> jsonFileProvider = usedPath -> Optional.empty();
-      BiConsumer<String, HashMap<String, String>> createdJsonFileConsumer = (usedPath, foundJsonMap) -> log.info("A json File is created from the path {}", usedPath);
-      if (SCMContext.getContext().getStage() == Stage.PRODUCTION) {
+      Function<String, Optional<Map>> jsonFileProvider = usedPath -> Optional.empty();
+      BiConsumer<String, Map> createdJsonFileConsumer = (usedPath, foundJsonMap) -> log.info("A json File is created from the path {}", usedPath);
+      if (isProductionStage()) {
         log.info("In Production Stage get the plugin translations from the cache");
         jsonFileProvider = usedPath -> Optional.ofNullable(
           cache.get(usedPath));
@@ -94,58 +92,40 @@ public class I18nServlet extends HttpServlet {
       }
       out.write(objectMapper.writeValueAsString(getCollectedJson(path, jsonFileProvider, createdJsonFileConsumer)));
     } catch (IOException e) {
-      log.error("error on getting the translation of the plugins", e);
+      log.error("Error on getting the translation of the plugins", e);
       response.setStatus(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
     } catch (NotFoundException e) {
       log.error("Plugin translations are not found", e);
       response.setStatus(HttpServletResponse.SC_NOT_FOUND);
     }
-//    ScmEventBus.getInstance().post(new RestartEvent(I18nServlet.class,"einfach so"));
+  }
+
+  protected boolean isProductionStage() {
+    return SCMContext.getContext().getStage() == Stage.PRODUCTION;
   }
 
   /**
-   * Return a collected Json File as map with the given path from all plugins in the class path
+   * Return a collected Json File as map from the given path from all plugins in the class path
    *
    * @param path the searched resource path
-   * @return a collected Json File as map with the given path from all plugins in the class path
+   * @return a collected Json File as map from the given path from all plugins in the class path
    */
-  private Optional<HashMap<String, String>> collectJsonFile(String path) {
+  protected Optional<Map> collectJsonFile(String path) {
     log.info("Collect plugin translations from path {} for every plugin", path);
-    HashMap<String, String> result = null;
+    Map result = null;
     try {
       Enumeration<URL> resources = uberClassLoader.getResources(path.replaceFirst("/", ""));
       if (resources.hasMoreElements()) {
-        result = new HashMap<>();
+        result = new HashMap();
         while (resources.hasMoreElements()) {
           URL url = resources.nextElement();
-          result.putAll(mergeJSONs(objectMapper, url));
+          result.putAll(objectMapper.readValue(Files.readAllBytes(Paths.get(url.getPath())), Map.class));
         }
       }
     } catch (IOException e) {
       log.error("Error on loading sources from {}", path, e);
+      return Optional.empty();
     }
     return Optional.ofNullable(result);
   }
-
-  private boolean hasLanguagePostfix(String path) {
-    return languagePathPostfix.match(path);
-  }
-
-  /**
-   * remove the -DE from the path locales/de-DE/plugins
-   *
-   * @param servletPath
-   * @return
-   * @throws IOException
-   */
-  private String removeLanguagePostfix(String servletPath) {
-    return servletPath.replace(languagePathPostfix.getParen(1), "");
-  }
-
-  // TODO simplify
-  private HashMap<String, String> mergeJSONs(ObjectMapper objectMapper, URL url) throws IOException {
-    byte[] src = Files.readAllBytes(Paths.get(url.getPath()));
-    Map<String, String> json = objectMapper.readValue(src, HashMap.class);
-    return objectMapper.readerForUpdating(json).readValue(src);
-  }
 }
diff --git a/scm-webapp/src/test/java/sonia/scm/web/i18n/I18nServletTest.java b/scm-webapp/src/test/java/sonia/scm/web/i18n/I18nServletTest.java
new file mode 100644
index 0000000000..b8deb4b069
--- /dev/null
+++ b/scm-webapp/src/test/java/sonia/scm/web/i18n/I18nServletTest.java
@@ -0,0 +1,253 @@
+package sonia.scm.web.i18n;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.github.sdorra.shiro.ShiroRule;
+import com.github.sdorra.shiro.SubjectAware;
+import com.google.common.base.Charsets;
+import com.google.common.io.Files;
+import org.assertj.core.util.Lists;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.rules.TemporaryFolder;
+import org.junit.runner.RunWith;
+import org.mockito.ArgumentCaptor;
+import org.mockito.Mock;
+import org.mockito.MockSettings;
+import org.mockito.internal.creation.MockSettingsImpl;
+import org.mockito.invocation.InvocationOnMock;
+import org.mockito.junit.MockitoJUnitRunner;
+import sonia.scm.boot.RestartEvent;
+import sonia.scm.cache.Cache;
+import sonia.scm.cache.CacheManager;
+import sonia.scm.event.ScmEventBus;
+import sonia.scm.plugin.PluginLoader;
+import sonia.scm.plugin.UberClassLoader;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.File;
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.net.URL;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.Map;
+import java.util.Optional;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doCallRealMethod;
+import static org.mockito.Mockito.doThrow;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.never;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+@RunWith(MockitoJUnitRunner.Silent.class)
+@SubjectAware(configuration = "classpath:sonia/scm/shiro-001.ini")
+public class I18nServletTest {
+
+  @Rule
+  public ShiroRule shiro = new ShiroRule();
+
+  private static final String GIT_PLUGIN_JSON = "{\n" +
+    "  \"scm-git-plugin\": {\n" +
+    "    \"information\": {\n" +
+    "      \"clone\" : \"Clone\",\n" +
+    "      \"create\" : \"Create\",\n" +
+    "      \"replace\" : \"Push\"\n" +
+    "    }\n" +
+    "  }\n" +
+    "}\n";
+  private static final String HG_PLUGIN_JSON = "{\n" +
+    "  \"scm-hg-plugin\": {\n" +
+    "    \"information\": {\n" +
+    "      \"clone\" : \"Clone\",\n" +
+    "      \"create\" : \"Create\",\n" +
+    "      \"replace\" : \"Push\"\n" +
+    "    }\n" +
+    "  }\n" +
+    "}\n";
+  private static String SVN_PLUGIN_JSON = "{\n" +
+    "  \"scm-svn-plugin\": {\n" +
+    "    \"information\": {\n" +
+    "      \"checkout\" : \"Checkout\"\n" +
+    "    }\n" +
+    "  }\n" +
+    "}\n";
+
+  @Rule
+  public TemporaryFolder temporaryFolder = new TemporaryFolder();
+
+  @Mock
+  PluginLoader pluginLoader;
+
+  @Mock
+  CacheManager cacheManager;
+
+  @Mock
+  UberClassLoader uberClassLoader;
+
+  I18nServlet servlet;
+
+  @Mock
+  private Cache cache;
+  private Enumeration<URL> resources;
+
+  @Before
+  @SuppressWarnings("unchecked")
+  public void init() throws IOException {
+    resources = Collections.enumeration(Lists.newArrayList(
+      createFileFromString(SVN_PLUGIN_JSON).toURL(),
+      createFileFromString(GIT_PLUGIN_JSON).toURL(),
+      createFileFromString(HG_PLUGIN_JSON).toURL()
+    ));
+    when(pluginLoader.getUberClassLoader()).thenReturn(uberClassLoader);
+    when(cacheManager.getCache(I18nServlet.CACHE_NAME)).thenReturn(cache);
+    MockSettings settings = new MockSettingsImpl<>();
+    settings.useConstructor(pluginLoader, cacheManager);
+    settings.defaultAnswer(InvocationOnMock::callRealMethod);
+    servlet = mock(I18nServlet.class, settings);
+  }
+
+  @Test
+  public void shouldCleanCacheOnRestartEvent() {
+    ScmEventBus.getInstance().register(servlet);
+
+    ScmEventBus.getInstance().post(new RestartEvent(I18nServlet.class, "Restart to reload the plugin resources"));
+
+    verify(cache).clear();
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void shouldFailWith404OnMissingResources() throws IOException {
+    String path = "/locales/de/plugins.json";
+    HttpServletRequest request = mock(HttpServletRequest.class);
+    HttpServletResponse response = mock(HttpServletResponse.class);
+    PrintWriter writer = mock(PrintWriter.class);
+    when(response.getWriter()).thenReturn(writer);
+    when(request.getServletPath()).thenReturn(path);
+    when(uberClassLoader.getResources("locales/de/plugins.json")).thenThrow(IOException.class);
+
+    servlet.doGet(request, response);
+
+    verify(response).setStatus(404);
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void shouldFailWith500OnIOException() throws IOException {
+    String path = "/locales/de/plugins.json";
+    HttpServletRequest request = mock(HttpServletRequest.class);
+    HttpServletResponse response = mock(HttpServletResponse.class);
+    PrintWriter writer = mock(PrintWriter.class);
+    when(response.getWriter()).thenReturn(writer);
+    when(request.getServletPath()).thenReturn(path);
+    when(uberClassLoader.getResources("locales/de/plugins.json")).thenReturn(resources);
+    doThrow(IOException.class).when(writer).write(any(String.class));
+
+    servlet.doGet(request, response);
+
+    verify(response).setStatus(500);
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void inDevelopmentStageShouldNotUseCache() throws IOException {
+    String path = "/locales/de/plugins.json";
+    when(servlet.isProductionStage()).thenReturn(false);
+    HttpServletRequest request = mock(HttpServletRequest.class);
+    HttpServletResponse response = mock(HttpServletResponse.class);
+    PrintWriter writer = mock(PrintWriter.class);
+    when(response.getWriter()).thenReturn(writer);
+    when(request.getServletPath()).thenReturn(path);
+    when(uberClassLoader.getResources("locales/de/plugins.json")).thenReturn(resources);
+    ArgumentCaptor<String> captor = ArgumentCaptor.forClass(String.class);
+    doCallRealMethod().when(writer).write(captor.capture());
+
+    servlet.doGet(request, response);
+
+    assertJsonMap(jsonStringToMap(captor.getValue()));
+    verify(cache, never()).get(any());
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void inProductionStageShouldUseCache() throws IOException {
+    String path = "/locales/de/plugins.json";
+    when(servlet.isProductionStage()).thenReturn(true);
+    HttpServletRequest request = mock(HttpServletRequest.class);
+    HttpServletResponse response = mock(HttpServletResponse.class);
+    PrintWriter writer = mock(PrintWriter.class);
+    when(response.getWriter()).thenReturn(writer);
+    when(request.getServletPath()).thenReturn(path);
+    when(uberClassLoader.getResources("locales/de/plugins.json")).thenReturn(resources);
+    ArgumentCaptor<String> captor = ArgumentCaptor.forClass(String.class);
+    doCallRealMethod().when(writer).write(captor.capture());
+
+    servlet.doGet(request, response);
+
+    assertJsonMap(jsonStringToMap(captor.getValue()));
+    verify(cache).get(path);
+    verify(cache).put(eq(path), any());
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void inProductionStageShouldGetFromCache() throws IOException {
+    String path = "/locales/de/plugins.json";
+    when(servlet.isProductionStage()).thenReturn(true);
+    HttpServletRequest request = mock(HttpServletRequest.class);
+    HttpServletResponse response = mock(HttpServletResponse.class);
+    PrintWriter writer = mock(PrintWriter.class);
+    when(response.getWriter()).thenReturn(writer);
+    when(request.getServletPath()).thenReturn(path);
+    when(uberClassLoader.getResources("locales/de/plugins.json")).thenReturn(resources);
+    ArgumentCaptor<String> captor = ArgumentCaptor.forClass(String.class);
+    doCallRealMethod().when(writer).write(captor.capture());
+    Map cachedMap = jsonStringToMap(GIT_PLUGIN_JSON);
+    cachedMap.putAll(jsonStringToMap(HG_PLUGIN_JSON));
+    cachedMap.putAll(jsonStringToMap(SVN_PLUGIN_JSON));
+    when(cache.get(path)).thenReturn(cachedMap);
+    servlet.doGet(request, response);
+    verify(servlet, never()).collectJsonFile(path);
+    verify(cache, never()).put(eq(path), any());
+    verify(cache).get(path);
+    assertJsonMap(jsonStringToMap(captor.getValue()));
+  }
+
+  @Test
+  @SuppressWarnings("unchecked")
+  public void shouldCollectJsonFile() throws IOException {
+    String path = "locales/de/plugins.json";
+
+    when(uberClassLoader.getResources(path)).thenReturn(resources);
+    Optional<Map> mapOptional = servlet.collectJsonFile("/" + path);
+
+    assertJsonMap(mapOptional.orElse(null));
+  }
+
+  @SuppressWarnings("unchecked")
+  public void assertJsonMap(Map actual) throws IOException {
+    assertThat(actual)
+      .isNotEmpty()
+      .containsAllEntriesOf(jsonStringToMap(GIT_PLUGIN_JSON))
+      .containsAllEntriesOf(jsonStringToMap(HG_PLUGIN_JSON))
+      .containsAllEntriesOf(jsonStringToMap(SVN_PLUGIN_JSON));
+  }
+
+  public File createFileFromString(String json) throws IOException {
+    File file = temporaryFolder.newFile();
+    Files.write(json.getBytes(Charsets.UTF_8), file);
+    return file;
+  }
+
+  private Map jsonStringToMap(String fileAsString) throws IOException {
+    ObjectMapper mapper = new ObjectMapper();
+    return mapper.readValue(fileAsString, Map.class);
+  }
+
+}