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backend/node_modules/process-warning/test/jest.test.js

@@ -0,0 +1,22 @@
+/* global test, expect */
+'use strict'
+
+const { createWarning } = require('..')
+
+test('works with jest', done => {
+  const code = createWarning({
+    name: 'TestDeprecation',
+    code: 'CODE',
+    message: 'Hello world'
+  })
+  code('world')
+
+  // we cannot actually listen to process warning event
+  // because jest messes with it (that's the point of this test)
+  // we can only test it was emitted indirectly
+  // and test no exception is raised
+  setImmediate(() => {
+    expect(code.emitted).toBeTruthy()
+    done()
+  })
+})