100% coverage of the library

test/index-tests.js

@@ -0,0 +1,27 @@
+import chai from 'chai';
+
+const proxyquire = require('proxyquire').noPreserveCache();
+
+const renderer = { renderer: true };
+const mainProcess = { mainProcess: true };
+const expect = chai.expect;
+
+describe('index', () => {
+  it('imports the renderer promiseIpc in the renderer environment', () => {
+    const promiseIpc = proxyquire('../index', {
+      './renderer': renderer,
+      './mainProcess': mainProcess,
+      'is-electron-renderer': true,
+    });
+    expect(promiseIpc).to.eql(renderer);
+  });
+
+  it('imports the main process promiseIpc in the mainProcess environment', () => {
+    const promiseIpc = proxyquire('../index', {
+      './renderer': renderer,
+      './mainProcess': mainProcess,
+      'is-electron-renderer': false,
+    });
+    expect(promiseIpc).to.eql(mainProcess);
+  });
+});

test/mainProcess-tests.js

@@ -68,6 +68,15 @@ describe('mainProcess', () => {
       ipcRenderer.send(route, 'replyChannel', 'dataArg1');
     });
 
+    it('lets listener reject with a simple string', (done) => {
+      mainProcess.on(route, () => Promise.reject('goober'));
+      ipcRenderer.once('replyChannel', (event, status, result) => {
+        expect([status, result]).to.eql(['failure', 'goober']);
+        done();
+      });
+      ipcRenderer.send(route, 'replyChannel', 'dataArg1');
+    });
+
     it('when listener throws, sends failure + error to the renderer', (done) => {
       mainProcess.on(route, () => {
         throw new Error('oh no');

test/renderer-tests.js

@@ -144,6 +144,15 @@ describe('renderer', () => {
       mockWebContents.send(route, 'replyChannel', 'dataArg1');
     });
 
+    it('lets a listener reject with a simple string', (done) => {
+      renderer.on(route, () => Promise.reject('goober'));
+      ipcMain.once('replyChannel', (event, status, result) => {
+        expect([status, result]).to.eql(['failure', 'goober']);
+        done();
+      });
+      mockWebContents.send(route, 'replyChannel', 'dataArg1');
+    });
+
     it('when listener throws, sends failure + error to the main process', (done) => {
       renderer.on(route, () => {
         throw new Error('oh no');