chore: added tests for fragment hooks

ilc/server/tailor/fragment-hooks.js

@@ -5,7 +5,7 @@ const parseLinkHeader = require('tailorx/lib/parse-link-header');
 
 const { appIdToNameAndSlot } = require('../../common/utils');
 
-function insertStart(stream, attributes, headers, index) {
+function insertStart(stream, attributes, headers) {
     const bundleVersionOverrides = _.pick(attributes, ['wrapperPropsOverride']);
 
     if (headers.link) {

ilc/server/tailor/fragment-hooks.spec.js

@@ -0,0 +1,175 @@
+const chai = require('chai');
+const {getFragmentAttributes} = require('../../tests/helpers');
+const {insertStart, insertEnd} = require('./fragment-hooks');
+const {PassThrough} = require('stream');
+
+describe('fragment-hooks', () => {
+    describe('insertEnd', () => {
+        it('should not write to stream', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes();
+            const headers = {};
+
+            insertEnd(mockStream, fragmentAttrs, headers);
+
+            chai.expect(mockStream.readableLength).to.be.equal(0);
+        });
+    });
+
+    describe('insertStart', () => {
+        it('should write a script tag with wrapper overrides', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({
+                wrapperPropsOverride: {
+                    param1: 'value1',
+                    param2: 'value2',
+                }
+            });
+            const headers = {};
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal('<script type="spa-config-override">{"wrapperPropsOverride":{"param1":"value1","param2":"value2"}}</script>');
+        });
+
+
+        it('should write async fragment code warning comments for ref stylesheet ', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({async: true});
+            const headers = {
+                link: '<https://domain.com/app.css>; rel="stylesheet"',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal(
+                '<!-- Async fragments are not fully implemented yet: https://domain.com/app.css -->' +
+                '<script type="spa-config-override">{"cssBundle":"https://domain.com/app.css"}</script>'
+            );
+
+        });
+
+        it('should inject style link override function and script config override tag', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({id: 'autogenerated_identifier'});
+            const headers = {
+                link: '<https://domain.com/app.css>; rel="stylesheet"',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal(
+                '<script>(function(url, id){const link = document.head.querySelector(\'link[data-fragment-id="\' + id + \'"]\');if (link && link.href !== url) {link.href = url;}})("https://domain.com/app.css", "autogenerated_identifier");</script>' +
+                '<script type="spa-config-override">{"cssBundle":"https://domain.com/app.css"}</script>'
+            );
+        });
+
+        it('shouldn\'t inject style link override function if attribute.id hasn\'t been provided', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({id: ''});
+            const headers = {
+                link: '<https://domain.com/app.css>; rel="stylesheet"',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal(
+                '<script type="spa-config-override">{"cssBundle":"https://domain.com/app.css"}</script>'
+            );
+        });
+
+        it('should inject overrides with spaBundle', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({id: 'autogenerated_identifier'});
+            const headers = {
+                link: '<https://domain.com/single_spa.js>; rel="fragment-script"; as="script"; crossorigin="anonymous"',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal('<script type="spa-config-override">{"spaBundle":"https://domain.com/single_spa.js","appName":"autogenerated_identifier"}</script>');
+        });
+
+        it('should correct map appName for overrides', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({
+                id: 'autogenerated_identifier',
+                wrapperConf: {
+                    appId: 'wrapper__at__body',
+                    name: '@portal/wrapper',
+                    src: 'https://wrapper.com/fragment',
+                    timeout: 2000
+                },
+            });
+
+            const headers = {
+                link: '<https://domain.com/single_spa.js>; rel="fragment-script"; as="script"; crossorigin="anonymous"',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal('<script type="spa-config-override">{"spaBundle":"https://domain.com/single_spa.js","appName":"@portal/wrapper"}</script>');
+        });
+
+        it('should forward fragment dependency through overrides', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({id: 'autogenerated_identifier'});
+            const headers = {
+                link: '<https://domain.com/single_spa.js>; rel="fragment-dependency"; name="dep_name"',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal('<script type="spa-config-override">{"dependencies":{"dep_name":"https://domain.com/single_spa.js"}}</script>');
+        });
+
+        it('should forward a few fragment dependencies through overrides', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({id: 'autogenerated_identifier'});
+            const headers = {
+                link: '<https://domain.com/single_spa.js>; rel="fragment-dependency"; name="dep_name", <https://domain2.com/single_spa2.js>; rel="fragment-dependency"; name="dep_name2"',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal('<script type="spa-config-override">{"dependencies":{"dep_name":"https://domain.com/single_spa.js","dep_name2":"https://domain2.com/single_spa2.js"}}</script>');
+        });
+
+        it('shouldn\'t forward fragment dependency uri if its name hasn\'t been provided', () => {
+            const mockStream = new PassThrough();
+            const fragmentAttrs = getFragmentAttributes({id: 'autogenerated_identifier'});
+            const headers = {
+                link: '<https://domain.com/single_spa.js>; rel="fragment-script"; as="script"; crossorigin="anonymous", <https://domain.com/single_spa.js>; rel="fragment-dependency";',
+            };
+
+            insertStart(mockStream, fragmentAttrs, headers);
+
+            const streamData = mockStream.read();
+
+            chai.expect(streamData).to.be.instanceOf(Buffer);
+            chai.expect(streamData.toString()).to.be.equal('<script type="spa-config-override">{"spaBundle":"https://domain.com/single_spa.js","appName":"autogenerated_identifier"}</script>');
+        })
+    });
+});

ilc/tests/helpers.js

@@ -110,10 +110,34 @@ function setupMockServersForApps() {
         });
 }
 
+/**
+ * Returns mock attributes for tests
+ * @param overrideAttributes override default attributes
+ * @returns {{async: boolean, public: boolean, ignoreInvalidSsl: boolean, appProps: {}, wrapperConf: null, id: string, returnHeaders: boolean, url: string, timeout: number, primary: boolean, forwardQuerystring: boolean}}
+ */
+function getFragmentAttributes(overrideAttributes = {}) {
+    const defaultAttributes = {
+        id: 'microfrontend__at__slot',
+        appProps: {},
+        wrapperConf: null,
+        url: 'https://domain.com/',
+        async: false,
+        primary: false,
+        public: false,
+        timeout: 1000,
+        returnHeaders: false,
+        forwardQuerystring: false,
+        ignoreInvalidSsl: false,
+    }
+
+    return {...defaultAttributes, ...overrideAttributes};
+}
+
 module.exports = {
     getRegistryMock,
     getRouterProps,
     getFragmentResponses,
     getPluginManagerMock,
     setupMockServersForApps,
+    getFragmentAttributes,
 }