add tests for clipboard lib

tests/lib/utils/clipboardIo.spec.js

@@ -0,0 +1,30 @@
+import { expect } from 'chai'
+import cIo from '@/lib/utils/clipboardIo'
+import sinon from 'sinon'
+
+describe('clipboardIo.js', async () => {
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('copyCsv', async () => {
+    sinon.stub(navigator.clipboard, 'writeText').resolves(true)
+    await cIo.copyCsv('id\tname\r\n1\t2')
+    expect(navigator.clipboard.writeText.calledOnceWith('id\tname\r\n1\t2'))
+  })
+
+  it('copyImage for canvas calls _copyCanvas', async () => {
+    sinon.stub(cIo, '_copyCanvas').resolves(true)
+    const canvas = document.createElement('canvas')
+
+    await cIo.copyImage(canvas)
+    expect(cIo._copyCanvas.calledOnceWith(canvas))
+  })
+
+  it('copyImage for dataUrl calls _copyFromDataUrl', async () => {
+    sinon.stub(cIo, '_copyFromDataUrl').resolves(true)
+    const url = document.createElement('canvas').toDataURL()
+    await cIo.copyImage(url)
+    expect(cIo._copyFromDataUrl.calledOnceWith(url))
+  })
+})