test: add test to validate log output structure

lib/log.spec.js

@@ -0,0 +1,39 @@
+const log = require('./log')
+const chalk = require('chalk')
+const stripAnsi = require('strip-ansi');
+
+test('should return formatted log', async () => {
+    const org = 'foojs'
+    const repo = 'barjs'
+    const issue = {
+        title: 'Add BAZ support',
+        pr: 123,
+        labels: [[Object], [Object], [Object]],
+        state: 'open',
+        repo: `https://api.github.com/${org}/${repo}`,
+        url: `https://github.com/${org}/${repo}/issues/123`,
+        assignee: null,
+        assignees: [],
+        locked: false
+    }
+
+    const expectedOutput = `
+╭──────────────────────────────────────────────────────────╮
+│                                                          │
+│   Good First Issue in foojs:                             │
+│                                                          │
+│     - Title: Add BAZ support                             │
+│     - Repository: foojs/barjs                            │
+│     - Issue: #123                                        │
+│     - Status: open                                       │
+│     - Assigned to: unassigned!                           │
+│                                                          │
+│   Start now: https://github.com/foojs/barjs/issues/123   │
+│                                                          │
+╰──────────────────────────────────────────────────────────╯
+`
+
+    const actualOutput = await log(issue, org)
+
+    expect(expectedOutput).toBe(stripAnsi(actualOutput))
+})

package.json

@@ -58,6 +58,7 @@
   "devDependencies": {
     "jest": "^23.6.0",
     "markdown-magic": "^0.1.25",
-    "standard": "^12.0.1"
+    "standard": "^12.0.1",
+    "strip-ansi": "^5.0.0"
   }
 }