Use toUTCString() on Date objects.

api/VsoClient.ts

@@ -80,7 +80,7 @@ export class VsoClient {
                     if (regExExecArray[3]) {
                         // requesting preview
                         isPreview = true;
-                        if (regExExecArray[5]) { 
+                        if (regExExecArray[5]) {
                             // we have a resource version
                             resourceVersion = +regExExecArray[5];
                         }
@@ -119,7 +119,7 @@ export class VsoClient {
 
         return this.beginGetLocation(area, locationId)
             .then((location: ifm.ApiResourceLocation): ClientVersioningData => {
-                if (!location) { 
+                if (!location) {
                     throw new Error("Failed to find api location for area: " + area + " id: " + locationId);
                 }
 
@@ -132,7 +132,7 @@ export class VsoClient {
                 };
             });
     }
-    
+
     /**
      * Sets a promise that is waited on before any requests are issued. Can be used to asynchronously
      * set the request url and auth token manager.
@@ -142,10 +142,10 @@ export class VsoClient {
             this._initializationPromise = promise;
         }
     }
-    
+
     /**
      * Gets information about an API resource location (route template, supported versions, etc.)
-     * 
+     *
      * @param area resource area name
      * @param locationId Guid of the location to get
      */
@@ -162,7 +162,7 @@ export class VsoClient {
         if (!areaLocationsPromise) {
             let requestUrl = this.resolveUrl(VsoClient.APIS_RELATIVE_PATH + "/" + area);
             areaLocationsPromise = this.restClient.options<any>(requestUrl)
-                .then((res:restm.IRestResponse<any>) => {                    
+                .then((res:restm.IRestResponse<any>) => {
                     let locationsLookup: VssApiResourceLocationLookup = {};
                     let resourceLocations: ifm.ApiResourceLocation[] = res.result.value;
                     let i;
@@ -201,8 +201,12 @@ export class VsoClient {
         }
 
         if(queryString === '' && prefix.length > 0){
+            // Date.prototype.toString() returns a string that is not valid for the REST API.
+            // Need to specially call `toUTCString()` instead for such cases
+            const queryValue = typeof queryParams === 'object' && 'toUTCString' in queryParams ? (queryParams as Date).toUTCString() : queryParams.toString();
+
             // Will always need to chop period off of end of prefix
-            queryString = prefix.slice(0,-1) + '=' + encodeURIComponent(queryParams.toString()) + '&';
+            queryString = prefix.slice(0,-1) + '=' + encodeURIComponent(queryValue) + '&';
         }
         return queryString;
     }

test/units/tests.ts

@@ -11,7 +11,7 @@ describe('VSOClient Units', function () {
     let rest: rm.RestClient;
     let vsoClient: vsom.VsoClient
     const baseUrl: string = 'https://dev.azure.com/';
-    
+
     before(() => {
         const userAgent: string = "testAgent";
         rest = new rm.RestClient(userAgent, null, []);
@@ -162,6 +162,27 @@ describe('VSOClient Units', function () {
         assert.equal(res.requestUrl, 'https://dev.azure.com/testTemplate?status.innerstatus=2&version=1&nestedObject.nestedField=value&nestedObject.innerNestedObject.key=val2');
     });
 
+    it('gets versioning datafor dates', async () => {
+        //Arrange
+        nock('https://dev.azure.com/_apis/testArea5', {
+            reqheaders: {
+                'accept': 'application/json',
+                'user-agent': 'testAgent'
+            }})
+            .options('')
+            .reply(200, {
+                value: [{id: 'testLocation', maxVersion: '1', releasedVersion: '1', routeTemplate: 'testTemplate', area: 'testArea5', resourceName: 'testName', resourceVersion: '1'}]
+        });
+
+        //Act
+        const queryParams = {min: new Date(Date.UTC(208, 9, 19))};
+        const res: vsom.ClientVersioningData = await vsoClient.getVersioningData('1', 'testArea5', 'testLocation', {'testKey': 'testValue'}, queryParams);
+
+        //Assert
+        assert.equal(res.apiVersion, '1');
+        assert.equal(res.requestUrl, 'https://dev.azure.com/testTemplate?min=Wed%2C%2019%20Oct%200208%2000%3A00%3A00%20GMT');
+    });
+
     it('gets versioning data after an initialization promise', async () => {
         //Arrange
         nock('https://newbase.com/_apis/testArea6', {
@@ -207,7 +228,7 @@ describe('VSOClient Units', function () {
 });
 
 describe('WebApi Units', function () {
-    const osName: string = os.platform(); 
+    const osName: string = os.platform();
     const osVersion: string = os.release();
     const nodeApiName: string = 'azure-devops-node-api';
     const nodeApiVersion: string = JSON.parse(fs.readFileSync('package.json', 'utf8')).version;
@@ -245,7 +266,7 @@ describe('WebApi Units', function () {
         // Assert
         assert.equal(res.apiVersion, '1');
         assert.equal(res.requestUrl, 'https://dev.azure.com/testTemplate');
-        
+
     });
 
     it('connects to the server with the correct user agent when request settings are not specified', async () => {
@@ -273,8 +294,8 @@ describe('WebApi Units', function () {
     it('supports no_proxy environment variable', async() => {
         const myWebApi: WebApi.WebApi = new WebApi.WebApi('https://dev.azure.com/', WebApi.getBasicHandler('user', 'password'), null);
         process.env.no_proxy='dev.azure.com,my-tfs-instance.host'
-        assert.equal(myWebApi.isNoProxyHost('https://dev.azure.com/myproject'), true); 
-        assert.equal(myWebApi.isNoProxyHost('https://my-tfs-instance.host/myproject'), true); 
+        assert.equal(myWebApi.isNoProxyHost('https://dev.azure.com/myproject'), true);
+        assert.equal(myWebApi.isNoProxyHost('https://my-tfs-instance.host/myproject'), true);
         assert.equal(myWebApi.isNoProxyHost('https://my-other-tfs-instance.host/myproject'), false);
     });
 });