+ private void initializeFriends() {
+ when(configuration.getStringValue("Sone/" + SONE_ID + "/Friends/0/ID")).thenReturn(
+ TestValue.from("Friend1"));
+ when(configuration.getStringValue("Sone/" + SONE_ID + "/Friends/1/ID")).thenReturn(
+ TestValue.from("Friend2"));
+ when(configuration.getStringValue("Sone/" + SONE_ID + "/Friends/2/ID")).thenReturn(
+ TestValue.<String>from(null));
+ }
+
+ @Test
+ public void friendsAreReturnedCorrectly() {
+ initializeFriends();
+ when(sone.isLocal()).thenReturn(true);
+ Collection<String> friends = memoryDatabase.getFriends(sone);
+ assertThat(friends, containsInAnyOrder("Friend1", "Friend2"));
+ }
+
+ @Test
+ public void friendsAreOnlyLoadedOnceFromConfiguration() {
+ friendsAreReturnedCorrectly();
+ memoryDatabase.getFriends(sone);
+ verify(configuration).getStringValue("Sone/" + SONE_ID + "/Friends/0/ID");
+ }
+
+ @Test
+ public void friendsAreOnlyReturnedForLocalSones() {
+ Collection<String> friends = memoryDatabase.getFriends(sone);
+ assertThat(friends, emptyIterable());
+ verify(configuration, never()).getStringValue("Sone/" + SONE_ID + "/Friends/0/ID");
+ }
+
+ @Test
+ public void checkingForAFriendReturnsTrue() {
+ initializeFriends();
+ when(sone.isLocal()).thenReturn(true);
+ assertThat(memoryDatabase.isFriend(sone, "Friend1"), is(true));
+ }
+
+ @Test
+ public void checkingForAFriendThatIsNotAFriendReturnsFalse() {
+ initializeFriends();
+ when(sone.isLocal()).thenReturn(true);
+ assertThat(memoryDatabase.isFriend(sone, "FriendX"), is(false));
+ }
+
+ @Test
+ public void checkingForAFriendOfRemoteSoneReturnsFalse() {
+ initializeFriends();
+ assertThat(memoryDatabase.isFriend(sone, "Friend1"), is(false));
+ }
+
+ private Map<String, Value<String>> prepareConfigurationValues() {
+ final Map<String, Value<String>> configurationValues = new HashMap<String, Value<String>>();
+ when(configuration.getStringValue(anyString())).thenAnswer(new Answer<Value<String>>() {
+ @Override
+ public Value<String> answer(InvocationOnMock invocation) throws Throwable {
+ Value<String> stringValue = TestValue.from(null);
+ configurationValues.put((String) invocation.getArguments()[0], stringValue);
+ return stringValue;
+ }
+ });
+ return configurationValues;
+ }
+
+ @Test
+ public void friendIsAddedCorrectlyToLocalSone() {
+ Map<String, Value<String>> configurationValues = prepareConfigurationValues();
+ when(sone.isLocal()).thenReturn(true);
+ memoryDatabase.addFriend(sone, "Friend1");
+ assertThat(configurationValues.get("Sone/" + SONE_ID + "/Friends/0/ID"),
+ is(TestValue.from("Friend1")));
+ assertThat(configurationValues.get("Sone/" + SONE_ID + "/Friends/1/ID"),
+ is(TestValue.<String>from(null)));
+ }
+
+ @Test
+ public void friendIsNotAddedToRemoteSone() {
+ memoryDatabase.addFriend(sone, "Friend1");
+ verify(configuration, never()).getStringValue(anyString());
+ }
+
+ @Test
+ public void configurationIsWrittenOnceIfFriendIsAddedTwice() {
+ prepareConfigurationValues();
+ when(sone.isLocal()).thenReturn(true);
+ memoryDatabase.addFriend(sone, "Friend1");
+ memoryDatabase.addFriend(sone, "Friend1");
+ verify(configuration, times(3)).getStringValue(anyString());
+ }
+
+ @Test
+ public void friendIsRemovedCorrectlyFromLocalSone() {
+ Map<String, Value<String>> configurationValues = prepareConfigurationValues();
+ when(sone.isLocal()).thenReturn(true);
+ memoryDatabase.addFriend(sone, "Friend1");
+ memoryDatabase.removeFriend(sone, "Friend1");
+ assertThat(configurationValues.get("Sone/" + SONE_ID + "/Friends/0/ID"),
+ is(TestValue.<String>from(null)));
+ assertThat(configurationValues.get("Sone/" + SONE_ID + "/Friends/1/ID"),
+ is(TestValue.<String>from(null)));
+ }
+
+ @Test
+ public void configurationIsNotWrittenWhenANonFriendIsRemoved() {
+ prepareConfigurationValues();
+ when(sone.isLocal()).thenReturn(true);
+ memoryDatabase.removeFriend(sone, "Friend1");
+ verify(configuration).getStringValue(anyString());
+ }
+