refactor: remove mock-fs from dev dependency

test/unit/fs/node.ts

@@ -0,0 +1,47 @@
+import fs from 'src/fs/node'
+import * as path from 'path'
+import { expect, use } from 'chai'
+import * as chaiAsPromised from 'chai-as-promised'
+import { mock, restore } from 'test/stub/mockfs'
+
+use(chaiAsPromised)
+
+describe('fs', function () {
+  before(() => mock({
+    '/foo/bar.html': 'bar',
+    '/un-readable.html': { mode: '0000', content: '' }
+  }))
+  after(restore)
+
+  describe('#resolve()', function () {
+    it('should resolve based on root', async function () {
+      const filepath = fs.resolve('/foo', 'bar.html', '.liquid')
+      const expected = path.resolve('/foo/bar.html')
+      return expect(filepath).to.equal(expected)
+    })
+    it('should add extension if it has no extension', async function () {
+      const filepath = fs.resolve('/foo', 'bar', '.liquid')
+      const expected = path.resolve('/foo/bar.liquid')
+      return expect(filepath).to.equal(expected)
+    })
+  })
+  describe('#exists', () => {
+    it('should resolve as false if not exists', async () => {
+      const result = await fs.exists('/foo/foo.html')
+      return expect(result).to.be.false
+    })
+    it('should resolve as true if exists', async () => {
+      const result = await fs.exists('/foo/bar.html')
+      return expect(result).to.be.true
+    })
+  })
+  describe('#readFile', function () {
+    it('should throw when not exist', function () {
+      return expect(fs.readFile('/foo/foo.html')).to.rejectedWith('ENOENT')
+    })
+    it('should throw when file not readable', function () {
+      return expect(fs.readFile('/un-readable.html')).to
+        .be.rejectedWith(/EACCES/)
+    })
+  })
+})