diff --git a/frontend/tests/unit/common/config_test.js b/frontend/tests/unit/common/config_test.js
index 2be34160d..ac842e51b 100644
--- a/frontend/tests/unit/common/config_test.js
+++ b/frontend/tests/unit/common/config_test.js
@@ -128,15 +128,9 @@ describe("common/config", () => {
     });
     assert.equal(config.values.people[0].Name, "New Name");
     config.onPeople(".deleted", {
-      entities: [
-        {
-          UID: "abc123",
-          Name: "New Name",
-          Keywords: ["New", "Name"],
-        },
-      ],
+      entities: ["abc123"],
     });
-    assert.equal(config.values.people[0].Name, "New Name");
+    assert.empty(config.values.people);
   });
 
   it("should return if language is rtl", () => {
diff --git a/frontend/tests/unit/common/util_test.js b/frontend/tests/unit/common/util_test.js
index 3d4e8f76c..b6ef0abd3 100644
--- a/frontend/tests/unit/common/util_test.js
+++ b/frontend/tests/unit/common/util_test.js
@@ -53,4 +53,8 @@ describe("common/util", () => {
     const result = Util.truncate("teststring for mocha", 5, "ng");
     assert.equal(result, "tesng");
   });
+  it("should encode html", () => {
+    const result = Util.encodeHTML("Micha & Theresa > < 'Lilly'");
+    assert.equal(result, "Micha &amp; Theresa &gt; &lt; &#x27;Lilly&#x27;");
+  });
 });
diff --git a/frontend/tests/unit/fixtures.js b/frontend/tests/unit/fixtures.js
index 9994d3ad7..bb37c5389 100644
--- a/frontend/tests/unit/fixtures.js
+++ b/frontend/tests/unit/fixtures.js
@@ -333,6 +333,8 @@ Mock.onPost("api/v1/subjects/s123ghytrfggd/like").reply(200, { status: "ok" }, m
 Mock.onDelete("api/v1/subjects/s123ghytrfggd/like").reply(200, { status: "ok" }, mockHeaders);
 Mock.onGet("api/v1/config/options").reply(200, { success: "ok" }, mockHeaders);
 Mock.onPost("api/v1/config/options").reply(200, { success: "ok" }, mockHeaders);
+Mock.onPost("api/v1/albums").reply(200, { success: "ok" }, mockHeaders);
+
 
 //Mock.onPost().reply(200);
 //Mock.onDelete().reply(200);
diff --git a/frontend/tests/unit/model/face_test.js b/frontend/tests/unit/model/face_test.js
index b76b79bf8..cb978a830 100644
--- a/frontend/tests/unit/model/face_test.js
+++ b/frontend/tests/unit/model/face_test.js
@@ -72,7 +72,11 @@ describe("model/face", () => {
 
     assert.equal(result, "/api/v1/t/7ca759a2b788cc5bcc08dbbce9854ff94a2f94d1/public/xyz");
 
-    const values2 = { ID: "f123ghytrfggd", Samples: 5, Thumb: "7ca759a2b788cc5bcc08dbbce9854ff94a2f94d1" };
+    const values2 = {
+      ID: "f123ghytrfggd",
+      Samples: 5,
+      Thumb: "7ca759a2b788cc5bcc08dbbce9854ff94a2f94d1",
+    };
     const face2 = new Face(values2);
     const result2 = face2.thumbnailUrl();
 
@@ -105,6 +109,21 @@ describe("model/face", () => {
     assert.equal(face.Hidden, true);
   });
 
+  it("should toggle hidden", () => {
+    const values = {
+      ID: "f123ghytrfggd",
+      Samples: 5,
+      CreatedAt: "2012-07-08T14:45:39Z",
+      Hidden: true,
+    };
+    const face = new Face(values);
+    assert.equal(face.Hidden, true);
+    face.toggleHidden();
+    assert.equal(face.Hidden, false);
+    face.toggleHidden();
+    assert.equal(face.Hidden, true);
+  });
+
   it("should return batch size", () => {
     assert.equal(Face.batchSize(), 24);
   });
diff --git a/frontend/tests/unit/model/photo_test.js b/frontend/tests/unit/model/photo_test.js
index f3f185551..e4a71cda0 100644
--- a/frontend/tests/unit/model/photo_test.js
+++ b/frontend/tests/unit/model/photo_test.js
@@ -1386,6 +1386,7 @@ describe("model/photo", () => {
       ],
     };
     const photo = new Photo(values);
+    photo.Title = "New Title";
     photo
       .update()
       .then((response) => {
@@ -1395,5 +1396,63 @@ describe("model/photo", () => {
       .catch((error) => {
         done(error);
       });
+    assert.equal(photo.Title, "New Title");
+  });
+
+  it("should test get Markers", () => {
+    const values = {
+      ID: 10,
+      UID: "pqbemz8276mhtobh",
+      Lat: 1.1,
+      Lng: 3.3,
+      CameraID: 123,
+      Title: "Test Titel",
+      Description: "Super nice video",
+      Files: [
+        {
+          UID: "fqbfk181n4ca5sud",
+          Name: "1980/01/superCuteKitten.mp4",
+          Primary: false,
+          Type: "mp4",
+          Hash: "1xxbgdt55",
+        },
+      ],
+    };
+    const photo = new Photo(values);
+    const result = photo.getMarkers(true);
+    assert.empty(result);
+    const values2 = {
+      ID: 10,
+      UID: "pqbemz8276mhtobh",
+      Lat: 1.1,
+      Lng: 3.3,
+      CameraID: 123,
+      Title: "Test Titel",
+      Description: "Super nice video",
+      Files: [
+        {
+          UID: "fqbfk181n4ca5sud",
+          Name: "1980/01/superCuteKitten.mp4",
+          Primary: true,
+          Type: "mp4",
+          Hash: "1xxbgdt55",
+          Markers: [
+            {
+              UID: "aaa123",
+              Invalid: false,
+            },
+            {
+              UID: "bbb123",
+              Invalid: true,
+            },
+          ],
+        },
+      ],
+    };
+    const photo2 = new Photo(values2);
+    const result2 = photo2.getMarkers(true);
+    assert.equal(result2.length, 1);
+    const result3 = photo2.getMarkers(false);
+    assert.equal(result3.length, 2);
   });
 });
diff --git a/frontend/tests/unit/model/rest_test.js b/frontend/tests/unit/model/rest_test.js
index 823c92b03..55e3b9ce1 100644
--- a/frontend/tests/unit/model/rest_test.js
+++ b/frontend/tests/unit/model/rest_test.js
@@ -65,6 +65,15 @@ describe("model/abstract", () => {
     assert.equal(album.Description, undefined);
     await album.save();
     assert.equal(album.Description, "Test description");
+
+    const values2 = { Name: "Christmas 2019", Slug: "christmas-2019" };
+    const album2 = new Album(values2);
+    album.Name = "Christmas 2020";
+    assert.equal(album2.Description, undefined);
+    await album2.save().then((response) => {
+      assert.equal(response.success, "ok");
+    });
+    assert.equal(album2.Description, undefined);
   });
 
   it("should remove album", async () => {
diff --git a/frontend/tests/unit/model/subject_test.js b/frontend/tests/unit/model/subject_test.js
index 3d91501b0..ee2bbebd5 100644
--- a/frontend/tests/unit/model/subject_test.js
+++ b/frontend/tests/unit/model/subject_test.js
@@ -200,6 +200,40 @@ describe("model/subject", () => {
     assert.equal(subject.Favorite, true);
   });
 
+  it("show and hide subject", () => {
+    const values = {
+      UID: "s123ghytrfggd",
+      Type: "person",
+      Src: "manual",
+      Name: "Jane Doe",
+      Slug: "jane-doe",
+      Hidden: true,
+    };
+    const subject = new Subject(values);
+    assert.equal(subject.Hidden, true);
+    subject.show();
+    assert.equal(subject.Hidden, false);
+    subject.hide();
+    assert.equal(subject.Hidden, true);
+  });
+
+  it("should toggle hidden", () => {
+    const values = {
+      UID: "s123ghytrfggd",
+      Type: "person",
+      Src: "manual",
+      Name: "Jane Doe",
+      Slug: "jane-doe",
+      Hidden: true,
+    };
+    const subject = new Subject(values);
+    assert.equal(subject.Hidden, true);
+    subject.toggleHidden();
+    assert.equal(subject.Hidden, false);
+    subject.toggleHidden();
+    assert.equal(subject.Hidden, true);
+  });
+
   it("should return batch size", () => {
     assert.equal(Subject.batchSize(), 60);
   });