diff --git a/src/tags/reducers/tagEdit.js b/src/tags/reducers/tagEdit.js
index a69184e0..650f0ba1 100644
--- a/src/tags/reducers/tagEdit.js
+++ b/src/tags/reducers/tagEdit.js
@@ -3,9 +3,9 @@ import shlinkApiClient from '../../api/ShlinkApiClient';
 import colorGenerator from '../../utils/ColorGenerator';
 
 /* eslint-disable padding-line-between-statements, newline-after-var */
-const EDIT_TAG_START = 'shlink/editTag/EDIT_TAG_START';
-const EDIT_TAG_ERROR = 'shlink/editTag/EDIT_TAG_ERROR';
-const EDIT_TAG = 'shlink/editTag/EDIT_TAG';
+export const EDIT_TAG_START = 'shlink/editTag/EDIT_TAG_START';
+export const EDIT_TAG_ERROR = 'shlink/editTag/EDIT_TAG_ERROR';
+export const EDIT_TAG = 'shlink/editTag/EDIT_TAG';
 /* eslint-enable padding-line-between-statements, newline-after-var */
 
 export const TAG_EDITED = 'shlink/editTag/TAG_EDITED';
@@ -42,20 +42,19 @@ export default function reducer(state = defaultState, action) {
   }
 }
 
-export const _editTag = (shlinkApiClient, colorGenerator, oldName, newName, color) =>
-  async (dispatch) => {
-    dispatch({ type: EDIT_TAG_START });
+export const _editTag = (shlinkApiClient, colorGenerator, oldName, newName, color) => async (dispatch) => {
+  dispatch({ type: EDIT_TAG_START });
 
-    try {
-      await shlinkApiClient.editTag(oldName, newName);
-      colorGenerator.setColorForKey(newName, color);
-      dispatch({ type: EDIT_TAG, oldName, newName });
-    } catch (e) {
-      dispatch({ type: EDIT_TAG_ERROR });
+  try {
+    await shlinkApiClient.editTag(oldName, newName);
+    colorGenerator.setColorForKey(newName, color);
+    dispatch({ type: EDIT_TAG, oldName, newName });
+  } catch (e) {
+    dispatch({ type: EDIT_TAG_ERROR });
 
-      throw e;
-    }
-  };
+    throw e;
+  }
+};
 
 export const editTag = curry(_editTag)(shlinkApiClient, colorGenerator);
 
diff --git a/test/tags/reducers/tagEdit.test.js b/test/tags/reducers/tagEdit.test.js
new file mode 100644
index 00000000..8a1ca80c
--- /dev/null
+++ b/test/tags/reducers/tagEdit.test.js
@@ -0,0 +1,110 @@
+import * as sinon from 'sinon';
+import reducer, {
+  EDIT_TAG_START,
+  EDIT_TAG_ERROR,
+  EDIT_TAG,
+  TAG_EDITED,
+  tagEdited,
+  _editTag,
+} from '../../../src/tags/reducers/tagEdit';
+
+describe('tagEditReducer', () => {
+  describe('reducer', () => {
+    it('returns loading on EDIT_TAG_START', () => {
+      expect(reducer({}, { type: EDIT_TAG_START })).toEqual({
+        editing: true,
+        error: false,
+      });
+    });
+
+    it('returns error on EDIT_TAG_ERROR', () => {
+      expect(reducer({}, { type: EDIT_TAG_ERROR })).toEqual({
+        editing: false,
+        error: true,
+      });
+    });
+
+    it('returns tag names on EDIT_TAG', () => {
+      expect(reducer({}, { type: EDIT_TAG, oldName: 'foo', newName: 'bar' })).toEqual({
+        editing: false,
+        error: false,
+        oldName: 'foo',
+        newName: 'bar',
+      });
+    });
+
+    it('returns provided state on unknown action', () =>
+      expect(reducer({}, { type: 'unknown' })).toEqual({}));
+  });
+
+  describe('tagEdited', () => {
+    it('returns action based on provided params', () =>
+      expect(tagEdited('foo', 'bar', '#ff0000')).toEqual({
+        type: TAG_EDITED,
+        oldName: 'foo',
+        newName: 'bar',
+        color: '#ff0000',
+      }));
+  });
+
+  describe('editTag', () => {
+    const createApiClientMock = (result) => ({
+      editTag: sinon.fake.returns(result),
+    });
+    const colorGenerator = {
+      setColorForKey: sinon.spy(),
+    };
+    const dispatch = sinon.spy();
+
+    afterEach(() => {
+      colorGenerator.setColorForKey.resetHistory();
+      dispatch.resetHistory();
+    });
+
+    it('calls API on success', async () => {
+      const expectedDispatchCalls = 2;
+      const oldName = 'foo';
+      const newName = 'bar';
+      const color = '#ff0000';
+      const apiClientMock = createApiClientMock(Promise.resolve());
+      const dispatchable = _editTag(apiClientMock, colorGenerator, oldName, newName, color);
+
+      await dispatchable(dispatch);
+
+      expect(apiClientMock.editTag.callCount).toEqual(1);
+      expect(apiClientMock.editTag.getCall(0).args).toEqual([ oldName, newName ]);
+
+      expect(colorGenerator.setColorForKey.callCount).toEqual(1);
+      expect(colorGenerator.setColorForKey.getCall(0).args).toEqual([ newName, color ]);
+
+      expect(dispatch.callCount).toEqual(expectedDispatchCalls);
+      expect(dispatch.getCall(0).args).toEqual([{ type: EDIT_TAG_START }]);
+      expect(dispatch.getCall(1).args).toEqual([{ type: EDIT_TAG, oldName, newName }]);
+    });
+
+    it('throws on error', async () => {
+      const expectedDispatchCalls = 2;
+      const error = 'Error';
+      const oldName = 'foo';
+      const newName = 'bar';
+      const color = '#ff0000';
+      const apiClientMock = createApiClientMock(Promise.reject(error));
+      const dispatchable = _editTag(apiClientMock, colorGenerator, oldName, newName, color);
+
+      try {
+        await dispatchable(dispatch);
+      } catch (e) {
+        expect(e).toEqual(error);
+      }
+
+      expect(apiClientMock.editTag.callCount).toEqual(1);
+      expect(apiClientMock.editTag.getCall(0).args).toEqual([ oldName, newName ]);
+
+      expect(colorGenerator.setColorForKey.callCount).toEqual(0);
+
+      expect(dispatch.callCount).toEqual(expectedDispatchCalls);
+      expect(dispatch.getCall(0).args).toEqual([{ type: EDIT_TAG_START }]);
+      expect(dispatch.getCall(1).args).toEqual([{ type: EDIT_TAG_ERROR }]);
+    });
+  });
+});