1 files changed, 72 insertions, 0 deletions
diff --git a/spec/frontend/ide/stores/plugins/terminal_sync_spec.js b/spec/frontend/ide/stores/plugins/terminal_sync_spec.js
new file mode 100644
index 00000000000..2aa3e770e7d
--- /dev/null
+++ b/spec/frontend/ide/stores/plugins/terminal_sync_spec.js
@@ -0,0 +1,72 @@
+import createTerminalPlugin from '~/ide/stores/plugins/terminal';
+import createTerminalSyncPlugin from '~/ide/stores/plugins/terminal_sync';
+import { SET_SESSION_STATUS } from '~/ide/stores/modules/terminal/mutation_types';
+import { RUNNING, STOPPING } from '~/ide/stores/modules/terminal/constants';
+import { createStore } from '~/ide/stores';
+import eventHub from '~/ide/eventhub';
+
+jest.mock('~/ide/lib/mirror');
+
+const ACTION_START = 'terminalSync/start';
+const ACTION_STOP = 'terminalSync/stop';
+const ACTION_UPLOAD = 'terminalSync/upload';
+const FILES_CHANGE_EVENT = 'ide.files.change';
+
+describe('IDE stores/plugins/mirror', () => {
+  let store;
+
+  beforeEach(() => {
+    const root = document.createElement('div');
+
+    store = createStore();
+    createTerminalPlugin(root)(store);
+
+    store.dispatch = jest.fn(() => Promise.resolve());
+
+    createTerminalSyncPlugin(root)(store);
+  });
+
+  it('does nothing on ide.files.change event', () => {
+    eventHub.$emit(FILES_CHANGE_EVENT);
+
+    expect(store.dispatch).not.toHaveBeenCalled();
+  });
+
+  describe('when session starts running', () => {
+    beforeEach(() => {
+      store.commit(`terminal/${SET_SESSION_STATUS}`, RUNNING);
+    });
+
+    it('starts', () => {
+      expect(store.dispatch).toHaveBeenCalledWith(ACTION_START);
+    });
+
+    it('uploads when ide.files.change is emitted', () => {
+      expect(store.dispatch).not.toHaveBeenCalledWith(ACTION_UPLOAD);
+
+      eventHub.$emit(FILES_CHANGE_EVENT);
+
+      jest.runAllTimers();
+
+      expect(store.dispatch).toHaveBeenCalledWith(ACTION_UPLOAD);
+    });
+
+    describe('when session stops', () => {
+      beforeEach(() => {
+        store.commit(`terminal/${SET_SESSION_STATUS}`, STOPPING);
+      });
+
+      it('stops', () => {
+        expect(store.dispatch).toHaveBeenCalledWith(ACTION_STOP);
+      });
+
+      it('does not upload anymore', () => {
+        eventHub.$emit(FILES_CHANGE_EVENT);
+
+        jest.runAllTimers();
+
+        expect(store.dispatch).not.toHaveBeenCalledWith(ACTION_UPLOAD);
+      });
+    });
+  });
+});