Add unit tests for the automatic host header generation

Author: pimterry

test/unit/model/http/editable-request-parts.spec.ts

@@ -0,0 +1,108 @@
+import { observable } from 'mobx';
+
+import { expect } from '../../../test-setup';
+
+import { RawHeaders } from '../../../../src/types';
+
+import {
+    syncUrlToHeaders
+} from '../../../../src/model/http/editable-request-parts';
+
+describe("Editable request header synchronization", () => {
+    describe("for hostnames", () => {
+        it("doesn't do anything immediately given an empty input", () => {
+            const url = observable.box('');
+            const headers: RawHeaders = observable([]);
+
+            syncUrlToHeaders(
+                () => url.get(),
+                () => headers
+            );
+
+            expect(headers).to.deep.equal([]);
+        });
+
+        it("doesn't do anything immediately given a plain protocol", () => {
+            const url = observable.box('');
+            const headers: RawHeaders = observable([]);
+
+            syncUrlToHeaders(
+                () => url.get(),
+                () => headers
+            );
+
+            url.set('https://');
+
+            expect(headers).to.deep.equal([]);
+        });
+
+        it("initializes the host header when entering a first character of a URL", () => {
+            const url = observable.box('');
+            const headers: RawHeaders = observable([]);
+
+            syncUrlToHeaders(
+                () => url.get(),
+                () => headers
+            );
+
+            url.set('https://');
+            url.set('https://a');
+
+            expect(headers).to.deep.equal([
+                ['host', 'a']
+            ]);
+        });
+
+        it("updates an entered matching URL and host header if the URL changes", () => {
+            const url = observable.box('https://example.test:8080');
+            const headers: RawHeaders = observable([
+                ['host', 'example.test:8080']
+            ]);
+
+            syncUrlToHeaders(
+                () => url.get(),
+                () => headers
+            );
+
+            url.set('https://example2.test');
+
+            expect(headers).to.deep.equal([
+                ['host', 'example2.test']
+            ]);
+        });
+
+        it("doesn't modify the host header if the URL changes but they didn't match initially", () => {
+            const url = observable.box('https://example.test');
+            const headers: RawHeaders = observable([
+                ['host', 'other.test']
+            ]);
+
+            syncUrlToHeaders(
+                () => url.get(),
+                () => headers
+            );
+
+            url.set('https://example2.test');
+
+            expect(headers).to.deep.equal([
+                ['host', 'other.test']
+            ]);
+        });
+
+        it("doesn't modify the host header or URL if the host header is modified manually", () => {
+            const url = observable.box('https://example.test');
+            const headers: RawHeaders = observable([
+                ['host', 'example.test']
+            ]);
+
+            syncUrlToHeaders(
+                () => url.get(),
+                () => headers
+            );
+
+            headers[0][1] = 'other.test';
+
+            expect(url.get()).to.equal('https://example.test');
+        });
+    });
+});