test: add test for -h/--help

Author: nschonni

Diff for: src/cli/__snapshots__/htmlhint.spec.js.snap

@@ -0,0 +1,67 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Executable should print help with --help: stderr 1`] = `""`;
+
+exports[`Executable should print help with --help: stdout 1`] = `
+"Usage: htmlhint <file|folder|pattern|stdin|url ...> [options]
+
+Options:
+  -V, --version                                                    output the version number
+  -l, --list                                                       show all of the rules available
+  -c, --config <file>                                              custom configuration file
+  -r, --rules <ruleid, ruleid=value ...>                           set all of the rules available
+  -R, --rulesdir <file|folder>                                     load custom rules from file or folder
+  -f, --format <checkstyle|compact|html|json|junit|markdown|unix>  output messages as custom format
+  -i, --ignore <pattern, pattern ...>                              add pattern to exclude matches
+  --nocolor                                                        disable color
+  --warn                                                           Warn only, exit with 0
+  -h, --help                                                       display help for command
+  Examples:
+
+    htmlhint
+    htmlhint www
+    htmlhint www/test.html
+    htmlhint www/**/*.xhtml
+    htmlhint www/**/*.{htm,html}
+    htmlhint http://www.alibaba.com/
+    cat test.html | htmlhint stdin
+    htmlhint --list
+    htmlhint --rules tag-pair,id-class-value=underline test.html
+    htmlhint --config .htmlhintrc test.html
+    htmlhint --ignore **/build/**,**/test/**
+    htmlhint --rulesdir ./rules/
+"
+`;
+
+exports[`Executable should print help with -h: stderr 1`] = `""`;
+
+exports[`Executable should print help with -h: stdout 1`] = `
+"Usage: htmlhint <file|folder|pattern|stdin|url ...> [options]
+
+Options:
+  -V, --version                                                    output the version number
+  -l, --list                                                       show all of the rules available
+  -c, --config <file>                                              custom configuration file
+  -r, --rules <ruleid, ruleid=value ...>                           set all of the rules available
+  -R, --rulesdir <file|folder>                                     load custom rules from file or folder
+  -f, --format <checkstyle|compact|html|json|junit|markdown|unix>  output messages as custom format
+  -i, --ignore <pattern, pattern ...>                              add pattern to exclude matches
+  --nocolor                                                        disable color
+  --warn                                                           Warn only, exit with 0
+  -h, --help                                                       display help for command
+  Examples:
+
+    htmlhint
+    htmlhint www
+    htmlhint www/test.html
+    htmlhint www/**/*.xhtml
+    htmlhint www/**/*.{htm,html}
+    htmlhint http://www.alibaba.com/
+    cat test.html | htmlhint stdin
+    htmlhint --list
+    htmlhint --rules tag-pair,id-class-value=underline test.html
+    htmlhint --config .htmlhintrc test.html
+    htmlhint --ignore **/build/**,**/test/**
+    htmlhint --rulesdir ./rules/
+"
+`;

Diff for: src/cli/htmlhint.spec.js

@@ -36,26 +36,21 @@ describe('Executable', () => {
     })
   })
 
-  for (const format of [
-    'checkstyle',
-    'compact',
-    'default',
-    'html',
-    'json',
-    'junit',
-    'markdown',
-    'unix',
-  ]) {
-    it(`should have stdout output with formatter ${format}`, async () => {
-      const { exitCode, stdout, stderr } = await run(__dirname, [
-        path.resolve(__dirname, '__fixtures__', 'executable.html'),
-        '--format',
-        format,
-      ])
-
-      expect(exitCode).toBe(1)
-      expect(stdout).not.toBe('')
-      expect(stderr).toBe('')
-    })
-  }
+  it(`should print help with --help`, async () => {
+    const { exitCode, stdout, stderr } = await run(__dirname, ['--help'])
+
+    expect(exitCode).toBe(0)
+    expect(stdout).toMatchSnapshot('stdout')
+
+    expect(stderr).toMatchSnapshot('stderr')
+  })
+
+  it(`should print help with -h`, async () => {
+    const { exitCode, stdout, stderr } = await run(__dirname, ['-h'])
+
+    expect(exitCode).toBe(0)
+    expect(stdout).toMatchSnapshot('stdout')
+
+    expect(stderr).toMatchSnapshot('stderr')
+  })
 })