init

node_modules/cucumber-expressions/test/cucumber_expression_regexp_test.js

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+/* eslint-env mocha */
+const assert = require('assert')
+const CucumberExpression = require('../src/cucumber_expression')
+const ParameterTypeRegistry = require('../src/parameter_type_registry')
+
+describe('CucumberExpression', () => {
+  describe('RegExp translation', () => {
+    it('translates no arguments', () => {
+      assertRegexp(
+        'I have 10 cukes in my belly now',
+        /^I have 10 cukes in my belly now$/
+      )
+    })
+
+    it('translates alternation', () => {
+      assertRegexp(
+        'I had/have a great/nice/charming friend',
+        /^I (?:had|have) a (?:great|nice|charming) friend$/
+      )
+    })
+
+    it('translates alternation with non-alpha', () => {
+      assertRegexp('I said Alpha1/Beta1', /^I said (?:Alpha1|Beta1)$/)
+    })
+
+    it('translates parameters', () => {
+      assertRegexp(
+        "I have {float} cukes at {int} o'clock",
+        /^I have (-?\d*\.\d+) cukes at ((?:-?\d+)|(?:\d+)) o'clock$/
+      )
+    })
+
+    it('translates parenthesis to non-capturing optional capture group', () => {
+      assertRegexp(
+        'I have many big(ish) cukes',
+        /^I have many big(?:ish)? cukes$/
+      )
+    })
+
+    it('translates parenthesis with alpha unicode', () => {
+      assertRegexp('Привет, Мир(ы)!', /^Привет, Мир(?:ы)?!$/)
+    })
+  })
+})
+
+const assertRegexp = (expression, expectedRegexp) => {
+  const cucumberExpression = new CucumberExpression(
+    expression,
+    new ParameterTypeRegistry()
+  )
+  assert.deepEqual(cucumberExpression.regexp, expectedRegexp)
+}