test(pre): verification hook

tests/index.js

@@ -5,6 +5,7 @@ var test = require('tape')
 var createModule = require('./lib/create-module')
 
 require('./scenarios/custom-analyzer')(test, createModule)
+require('./scenarios/custom-verification')(test, createModule)
 require('./scenarios/ignore')(test, createModule)
 require('./scenarios/prepublish')(test, createModule)
 require('./scenarios/postpublish')(test, createModule)

tests/lib/custom-verification.js

@@ -0,0 +1,5 @@
+'use strict'
+
+module.exports = function (opts, cb) {
+  cb(null, !(opts.commits.length % 2))
+}

tests/scenarios/custom-verification.js

@@ -0,0 +1,45 @@
+'use strict'
+
+var path = require('path')
+
+var efh = require('error-first-handler')
+var nixt = require('nixt')
+
+module.exports = function (test, createModule) {
+  createModule({
+    release: {
+      verification: path.join(__dirname, '../lib/custom-verification')
+    }
+  }, efh()(function (name, cwd) {
+    test('custom-verification', function (t) {
+      t.test('even commit count', function (t) {
+        t.plan(1)
+        nixt()
+          .cwd(cwd)
+          .env('CI', true)
+          .env('npm_config_registry', 'http://127.0.0.1:4873/')
+          .exec('git commit --allow-empty -m "feat: commit"')
+          .run('npm run prepublish')
+          .code(0)
+          .end(function (err) {
+            t.error(err, 'nixt')
+          })
+      })
+
+      t.test('odd commit count', function (t) {
+        t.plan(1)
+        nixt()
+          .cwd(cwd)
+          .env('CI', true)
+          .env('npm_config_registry', 'http://127.0.0.1:4873/')
+          .exec('git commit --allow-empty -m "feat: commit"')
+          .run('npm run prepublish')
+          .code(1)
+          .stdout(/Verification failed/)
+          .end(function (err) {
+            t.error(err, 'nixt')
+          })
+      })
+    })
+  }))
+}