Set Issue labels by inputs & add unit test (#12)

* Set Issue labels by inputs

* Add unit test

src/audit.ts

@@ -0,0 +1,30 @@
+import {spawnSync, SpawnSyncReturns} from 'child_process'
+
+export class Audit {
+  stdout: string = ''
+  status: number | null = null
+
+  public async run(): Promise<void> {
+    const result: SpawnSyncReturns<string> = spawnSync('npm', ['audit'], {
+      encoding: 'utf-8'
+    })
+
+    if (result.error) {
+      throw result.error
+    }
+    if (result.status === null) {
+      throw new Error('the subprocess terminated due to a signal.')
+    }
+    if (result.stderr && result.stderr.length > 0) {
+      throw new Error(result.stderr)
+    }
+
+    this.status = result.status
+    this.stdout = result.stdout
+  }
+
+  public foundVulnerability(): boolean {
+    // `npm audit` return 1 when it found vulnerabilities
+    return this.status === 1
+  }
+}

src/main.ts

@@ -2,21 +2,16 @@ import * as core from '@actions/core'
 import * as github from '@actions/github'
 import stripAnsi from 'strip-ansi'
 import Octokit, {IssuesCreateResponse} from '@octokit/rest'
-import {spawnSync, SpawnSyncReturns} from 'child_process'
+import {Audit} from './audit'
 
 async function run(): Promise<void> {
   try {
-    const result: SpawnSyncReturns<string> = spawnSync('npm', ['audit'], {
-      encoding: 'utf-8'
-    })
+    const audit = new Audit()
+    audit.run()
 
-    if (result.stderr && result.stderr.length > 0) {
-      throw new Error(result.stderr)
-    }
+    core.info(audit.stdout)
 
-    core.info(result.stdout)
-
-    if (result.status === 0) {
+    if (!audit.foundVulnerability()) {
       // vulnerabilities are not found
       return
     }
@@ -26,13 +21,17 @@ async function run(): Promise<void> {
     const client: Octokit = new github.GitHub(token)
 
     // remove control characters and create a code block
-    const issueBody = `\`\`\`\n${stripAnsi(result.stdout)}\n\`\`\``
+    const issueBody = `\`\`\`\n${stripAnsi(audit.stdout)}\n\`\`\``
     const issueOptions = {
       title: core.getInput('issue_title'),
       body: issueBody,
       assignees: core
         .getInput('issue_assignees')
         .replace(/\s+/g, '')
+        .split(','),
+      labels: core
+        .getInput('issue_labels')
+        .replace(/\s+/g, '')
         .split(',')
     }
     const {