feat: update contains and add test cases

packages/file-graph/file.test.js

@@ -0,0 +1,49 @@
+import File from './file.js'
+
+describe('File', () => {
+  let file
+  beforeEach(() => {
+    file = new File({ path: '/home/user', type: 'folder', discovered: true })
+  })
+
+  const filesToCompare = [
+    {
+      name: 'direct children',
+      path: '/home/user/file1.txt',
+      answer: true,
+    },
+    {
+      name: 'nested children',
+      path: '/home/user/folder1/file1.txt',
+      answer: true,
+    },
+    {
+      name: 'outer file',
+      path: '/etc/file1.txt',
+      answer: false,
+    },
+    {
+      name: 'fake children',
+      path: '/home/user2/file2.txt',
+      answer: false,
+    },
+    {
+      name: 'same',
+      path: '/home/user',
+      answer: true,
+    },
+    {
+      name: 'same with trailing',
+      path: '/home/user/',
+      answer: true,
+    },
+  ]
+
+  filesToCompare.forEach(({ name, path, answer }) => {
+    test(`${name}: ${path}`, () => {
+      const fileToCompare = new File({ path, type: 'file', discovered: true })
+      console.log(fileToCompare)
+      expect(file.contains(fileToCompare)).toBe(answer)
+    })
+  })
+})