diff --git a/web/src/test/java/de/cotto/lndmanagej/ui/controller/ChannelDetailsControllerTest.java b/web/src/test/java/de/cotto/lndmanagej/ui/controller/ChannelDetailsControllerTest.java
new file mode 100644
index 00000000..25b1f7b6
--- /dev/null
+++ b/web/src/test/java/de/cotto/lndmanagej/ui/controller/ChannelDetailsControllerTest.java
@@ -0,0 +1,42 @@
+package de.cotto.lndmanagej.ui.controller;
+
+import de.cotto.lndmanagej.controller.NotFoundException;
+import de.cotto.lndmanagej.ui.page.PageService;
+import de.cotto.lndmanagej.ui.page.channel.ChannelDetailsPage;
+import de.cotto.lndmanagej.ui.page.general.ErrorPage;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.springframework.ui.Model;
+
+import static de.cotto.lndmanagej.controller.dto.ChannelDetailsDtoFixture.CHANNEL_DETAILS_DTO;
+import static de.cotto.lndmanagej.model.ChannelIdFixtures.CHANNEL_ID;
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.when;
+
+@ExtendWith(MockitoExtension.class)
+class ChannelDetailsControllerTest {
+    @InjectMocks
+    private ChannelDetailsController channelDetailsController;
+
+    @Mock
+    private PageService pageService;
+
+    @Mock
+    private Model model;
+
+    @Test
+    void channelDetails() throws NotFoundException {
+        when(pageService.channelDetails(CHANNEL_ID)).thenReturn(new ChannelDetailsPage(CHANNEL_DETAILS_DTO));
+        assertThat(channelDetailsController.channelDetails(CHANNEL_ID, model)).isEqualTo("channel-details");
+    }
+
+    @Test
+    void channelDetails_not_found() throws NotFoundException {
+        when(pageService.channelDetails(CHANNEL_ID)).thenThrow(NotFoundException.class);
+        when(pageService.error("Channel not found.")).thenReturn(new ErrorPage("x"));
+        assertThat(channelDetailsController.channelDetails(CHANNEL_ID, model)).isEqualTo("error");
+    }
+}