feat(ui): add tests for data explorer reducers

ui/test/data_explorer/reducers/queries.test.js

@@ -0,0 +1,41 @@
+import reducer from 'src/data_explorer/reducers/queries'
+
+import {
+  editQueryStatus,
+  resetQueryStatuses,
+  updateSourceLink,
+} from 'src/data_explorer/actions/queries'
+
+describe('DataExplorer.Reducers.queries', () => {
+  it('it sets the default query statuses', () => {
+    const state = reducer(undefined, {type: 'NOOP'})
+
+    expect(state.queryStatuses).toEqual({})
+  })
+
+  it('updates query status', () => {
+    const state = reducer(undefined, editQueryStatus('q1', {success: 'ok'}))
+
+    expect(state.queryStatuses).toEqual({q1: {success: 'ok'}})
+  })
+  it('updates multiple query statuses', () => {
+    let state = reducer(undefined, editQueryStatus('q1', {success: 'ok'}))
+    state = reducer(state, editQueryStatus('q1', {warn: 'ok'}))
+    state = reducer(state, editQueryStatus('q2', {error: 'no'}))
+
+    expect(state.queryStatuses).toEqual({q1: {warn: 'ok'}, q2: {error: 'no'}})
+  })
+  it('resets query statuses', () => {
+    let state = reducer(undefined, editQueryStatus('q1', {success: 'ok'}))
+    state = reducer(state, resetQueryStatuses())
+
+    expect(state.queryStatuses).toEqual({})
+  })
+  it('updates source link', () => {
+    let state = reducer(undefined, {type: 'NOOP'})
+    expect(state.sourceLink).toEqual('')
+    state = reducer(state, updateSourceLink('newLink'))
+
+    expect(state.sourceLink).toEqual('newLink')
+  })
+})