feat: add --validate-no-metadata flag

Useful to ensure the commit message doesn't include metadata that should
be added by automation (PR-URL and reviewers).

bin/cmd.js

@@ -17,6 +17,7 @@ const knownOpts = {
   help: Boolean,
   version: Boolean,
   'validate-metadata': Boolean,
+  'validate-no-metadata': Boolean,
   tap: Boolean,
   out: path,
   list: Boolean,

lib/rules/pr-url.js

@@ -10,6 +10,17 @@ export default {
   defaults: {},
   options: {},
   validate: (context, rule) => {
+    if (rule.options.expectsMissing) {
+      context.report({
+        id,
+        message: 'Commit must not have a PR-URL.',
+        string: context.prUrl,
+        line: 0,
+        column: 0,
+        level: context.prUrl ? 'fail' : 'pass'
+      })
+      return
+    }
     if (!context.prUrl) {
       context.report({
         id,

lib/rules/reviewers.js

@@ -21,6 +21,16 @@ export default {
       return
     }
 
+    if (rule.options.expectsMissing) {
+      return context.report({
+        id,
+        message: 'Commit must not have any reviewer.',
+        string: null,
+        line: 0,
+        column: 0,
+        level: parsed.reviewers.length ? 'fail' : 'pass'
+      })
+    }
     if (!Array.isArray(parsed.reviewers) || !parsed.reviewers.length) {
       // See nodejs/node#5aac4c42da104c30d8f701f1042d61c2f06b7e6c
       // for an example

lib/validator.js

@@ -47,7 +47,10 @@ export default class ValidateCommit extends EE {
     for (const key of keys) {
       this.rules.set(key, new BaseRule(RULES[key]))
     }
-    if (!this.opts['validate-metadata']) {
+    if (this.opts['validate-no-metadata']) {
+      this.rules.get('pr-url').options.expectsMissing = true
+      this.rules.get('reviewers').options.expectsMissing = true
+    } else if (!this.opts['validate-metadata']) {
       this.disableRule('pr-url')
       this.disableRule('reviewers')
       this.disableRule('metadata-end')

test/rules/pr-url.js

@@ -21,7 +21,7 @@ test('rule: pr-url', (t) => {
       }
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.test('invalid numeric', (tt) => {
@@ -43,7 +43,7 @@ test('rule: pr-url', (t) => {
       }
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.test('invalid', (tt) => {
@@ -66,7 +66,7 @@ test('rule: pr-url', (t) => {
       }
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.test('valid', (tt) => {
@@ -89,7 +89,7 @@ test('rule: pr-url', (t) => {
       }
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.test('valid URL containing hyphen', (tt) => {
@@ -112,7 +112,7 @@ test('rule: pr-url', (t) => {
       }
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.test('valid URL with trailing slash', (tt) => {
@@ -135,7 +135,7 @@ test('rule: pr-url', (t) => {
       }
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.end()

test/rules/reviewers.js

@@ -30,7 +30,7 @@ This is a test`
       tt.equal(opts.level, 'fail', 'level')
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.test('skip for release commit', (tt) => {
@@ -58,7 +58,7 @@ This is a test`
       })
     }
 
-    Rule.validate(context)
+    Rule.validate(context, { options: {} })
   })
 
   t.end()

test/validator.js

@@ -453,5 +453,35 @@ test('Validator - real commits', (t) => {
     })
   })
 
+  t.test('validate no metadata should report commits for having metadata', (tt) => {
+    const v = new Validator({
+      'validate-no-metadata': true
+    })
+    v.lint(str)
+    v.on('commit', (data) => {
+      const msgs = data.messages
+      const filtered = msgs.filter((item) => {
+        return item.level === 'fail'
+      })
+      tt.equal(filtered.length, 2, 'messages.length')
+      tt.end()
+    })
+  })
+
+  t.test('validate no metadata should not report commits without metadata', (tt) => {
+    const v = new Validator({
+      'validate-no-metadata': true
+    })
+    v.lint(str5)
+    v.on('commit', (data) => {
+      const msgs = data.messages
+      const filtered = msgs.filter((item) => {
+        return item.level === 'fail'
+      })
+      tt.equal(filtered.length, 0, 'messages.length')
+      tt.end()
+    })
+  })
+
   t.end()
 })