refactor: move redundant logic to a helper method

Author: jamesgeorge007

e2e/index.js

@@ -11,12 +11,10 @@ test('shows up help message without any args', async t => {
     t.snapshot(stderr);
 });
 
-test('shows up help message by passing in --help flag', async t => {
-    const { stdout } = await execa(rootCommand, ['--help']);
-    t.snapshot(stdout);
-});
+const matchSnapshot = async (t, arg) => {
+  const { stdout } = await execa(rootCommand, [arg]);
+  t.snapshot(stdout);
+};
 
-test('shows up help message by passing in -h flag', async t => {
-    const { stdout } = await execa(rootCommand, ['-h']);
-    t.snapshot(stdout);
-});
+test('shows help with -h flag', matchSnapshot, '-h');
+test('shows help with --help flag', matchSnapshot, '--help');

e2e/index.js.md

@@ -4,7 +4,7 @@ The actual snapshot is saved in `index.js.snap`.
 
 Generated by [AVA](https://ava.li).
 
-## shows up help message by passing in --help flag
+## shows help with --help flag
 
 > Snapshot 1
 
@@ -26,7 +26,7 @@ Generated by [AVA](https://ava.li).
     Development:␊
       https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md`
 
-## shows up help message without any args
+## shows help with -h flag
 
 > Snapshot 1
 
@@ -46,11 +46,9 @@ Generated by [AVA](https://ava.li).
       https://docsifyjs.github.io/docsify-cli␊
     ␊
     Development:␊
-      https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md␊
-    ␊
-    [ERROR] 0 arguments passed. Please specify a command`
+      https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md`
 
-## shows up help message by passing in -h flag
+## shows up help message without any args
 
 > Snapshot 1
 
@@ -70,4 +68,6 @@ Generated by [AVA](https://ava.li).
       https://docsifyjs.github.io/docsify-cli␊
     ␊
     Development:␊
-      https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md`
+      https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md␊
+    ␊
+    [ERROR] 0 arguments passed. Please specify a command`

e2e/index.js.snap

@@ -1,11 +1,73 @@
-# Snapshot report for `test/index.js`
+# Snapshot report for `e2e/index.js`
 
 The actual snapshot is saved in `index.js.snap`.
 
 Generated by [AVA](https://ava.li).
 
+## shows help with --help flag
+
+> Snapshot 1
+
+    `Usage: docsify <init|serve> <path>␊
+    ␊
+    Commands:␊
+      docsify init [path]   Creates new docs␊
+      docsify serve [path]  Run local server to preview site.␊
+      docsify start <path>  Server for SSR␊
+    ␊
+    Global Options␊
+      --help, -h     Show help                                             [boolean]␊
+      --version, -v  Show version number                                   [boolean]␊
+    ␊
+    Documentation:␊
+      https://docsifyjs.github.io/docsify␊
+      https://docsifyjs.github.io/docsify-cli␊
+    ␊
+    Development:␊
+      https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md`
+
+## shows help with -h flag
+
+> Snapshot 1
+
+    `Usage: docsify <init|serve> <path>␊
+    ␊
+    Commands:␊
+      docsify init [path]   Creates new docs␊
+      docsify serve [path]  Run local server to preview site.␊
+      docsify start <path>  Server for SSR␊
+    ␊
+    Global Options␊
+      --help, -h     Show help                                             [boolean]␊
+      --version, -v  Show version number                                   [boolean]␊
+    ␊
+    Documentation:␊
+      https://docsifyjs.github.io/docsify␊
+      https://docsifyjs.github.io/docsify-cli␊
+    ␊
+    Development:␊
+      https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md`
+
 ## shows up help message without any args
 
 > Snapshot 1
 
-    ''
+    `Usage: docsify <init|serve> <path>␊
+    ␊
+    Commands:␊
+      docsify init [path]   Creates new docs␊
+      docsify serve [path]  Run local server to preview site.␊
+      docsify start <path>  Server for SSR␊
+    ␊
+    Global Options␊
+      --help, -h     Show help                                             [boolean]␊
+      --version, -v  Show version number                                   [boolean]␊
+    ␊
+    Documentation:␊
+      https://docsifyjs.github.io/docsify␊
+      https://docsifyjs.github.io/docsify-cli␊
+    ␊
+    Development:␊
+      https://github.com/docsifyjs/docsify-cli/blob/master/CONTRIBUTING.md␊
+    ␊
+    [ERROR] 0 arguments passed. Please specify a command`