implemented in-memory version of DataStore for testing

scm-test/src/main/java/sonia/scm/store/InMemoryDataStore.java

@@ -0,0 +1,53 @@
+package sonia.scm.store;
+
+import sonia.scm.security.KeyGenerator;
+import sonia.scm.security.UUIDKeyGenerator;
+
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * In memory store implementation of {@link DataStore}.
+ *
+ * @author Sebastian Sdorra
+ *
+ * @param <T> type of stored object
+ */
+public class InMemoryDataStore<T> implements DataStore<T> {
+
+  private final Map<String, T> store = new HashMap<>();
+  private KeyGenerator generator = new UUIDKeyGenerator();
+
+  @Override
+  public String put(T item) {
+    String key = generator.createKey();
+    store.put(key, item);
+    return key;
+  }
+
+  @Override
+  public void put(String id, T item) {
+    store.put(id, item);
+  }
+
+  @Override
+  public Map<String, T> getAll() {
+    return Collections.unmodifiableMap(store);
+  }
+
+  @Override
+  public void clear() {
+    store.clear();
+  }
+
+  @Override
+  public void remove(String id) {
+    store.remove(id);
+  }
+
+  @Override
+  public T get(String id) {
+    return store.get(id);
+  }
+}

scm-test/src/main/java/sonia/scm/store/InMemoryDataStoreFactory.java

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+package sonia.scm.store;
+
+/**
+ * In memory configuration store factory for testing purposes.
+ *
+ * @author Sebastian Sdorra
+ */
+public class InMemoryDataStoreFactory implements DataStoreFactory {
+
+  private InMemoryDataStore store;
+
+  public InMemoryDataStoreFactory() {
+  }
+
+  public InMemoryDataStoreFactory(InMemoryDataStore store) {
+    this.store = store;
+  }
+
+  @Override
+  public <T> DataStore<T> getStore(TypedStoreParameters<T> storeParameters) {
+    if (store != null) {
+      return store;
+    }
+    return new InMemoryDataStore<>();
+  }
+}