Add tests to validate request header is sent

src/sidebar/services/test/api-routes-test.js

@@ -89,6 +89,14 @@ describe('sidebar.api-routes', () => {
         assert.deepEqual(routes, apiIndexResponse.links);
       });
     });
+
+    it('sends client version custom request header', () => {
+      return apiRoutes.routes().then(() => {
+        assert.calledWith(fakeHttp.get, fakeSettings.apiUrl, {
+          headers: { 'Hypothesis-Client-Version': '__VERSION__' },
+        });
+      });
+    });
   });
 
   describe('#links', () => {

src/sidebar/services/test/api-test.js

@@ -364,4 +364,16 @@ describe('sidebar.services.api', function() {
       .respond(() => [200, { userid: 'acct:user@example.com' }]);
     $httpBackend.flush();
   });
+
+  it('sends client version custom request header', () => {
+    api.profile.read({});
+
+    $httpBackend
+      .expectGET(
+        'https://example.com/api/profile',
+        headers => headers['Hypothesis-Client-Version'] === '__VERSION__'
+      )
+      .respond(() => [200, { userid: 'acct:user@example.com' }]);
+    $httpBackend.flush();
+  });
 });