Default to sending Accept and Content-Type headers for json

__tests__/basics.test.ts

@@ -9,6 +9,7 @@ interface HttpBinData {
     url: string;
     data: any;
     json: any;
+    headers: any;
     args?: any
 }
 
@@ -206,6 +207,8 @@ describe('basics', () => {
         expect(jsonObj.statusCode).toBe(200);
         expect(jsonObj.result).toBeDefined();
         expect(jsonObj.result.url).toBe('https://httpbin.org/get');
+        expect(jsonObj.result.headers["Accept"]).toBe(httpm.MediaTypes.ApplicationJson);
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
     });
     
     it('getting a non existent json object returns null', async() => {
@@ -221,6 +224,9 @@ describe('basics', () => {
         expect(restRes.result).toBeDefined(); 
         expect(restRes.result.url).toBe('https://httpbin.org/post');
         expect(restRes.result.json.name).toBe('foo');
+        expect(restRes.result.headers["Accept"]).toBe(httpm.MediaTypes.ApplicationJson);
+        expect(restRes.result.headers["Content-Type"]).toBe(httpm.MediaTypes.ApplicationJson);
+        expect(restRes.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
     });
 
     it('puts a json object', async() => {
@@ -230,6 +236,10 @@ describe('basics', () => {
         expect(restRes.result).toBeDefined(); 
         expect(restRes.result.url).toBe('https://httpbin.org/put');
         expect(restRes.result.json.name).toBe('foo');
+
+        expect(restRes.result.headers["Accept"]).toBe(httpm.MediaTypes.ApplicationJson);
+        expect(restRes.result.headers["Content-Type"]).toBe(httpm.MediaTypes.ApplicationJson);
+        expect(restRes.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
     });
     
     it('patch a json object', async() => {
@@ -239,5 +249,8 @@ describe('basics', () => {
         expect(restRes.result).toBeDefined(); 
         expect(restRes.result.url).toBe('https://httpbin.org/patch');
         expect(restRes.result.json.name).toBe('foo');
-    });    
-})
+        expect(restRes.result.headers["Accept"]).toBe(httpm.MediaTypes.ApplicationJson);
+        expect(restRes.result.headers["Content-Type"]).toBe(httpm.MediaTypes.ApplicationJson);
+        expect(restRes.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+    });
+});

__tests__/headers.test.ts

@@ -0,0 +1,79 @@
+import * as httpm from '../_out';
+import * as ifm from '../_out/interfaces'
+
+describe('headers', () => {
+    let _http: httpm.HttpClient;
+
+    beforeEach(() => {
+        _http = new httpm.HttpClient('http-client-tests');
+    });
+
+    it('preserves existing headers on getJson', async() => {
+        let additionalHeaders = { [httpm.Headers.Accept]: "foo" };
+        let jsonObj: ifm.ITypedResponse<any> = await _http.getJson<any>('https://httpbin.org/get', additionalHeaders);
+        expect(jsonObj.result.headers["Accept"]).toBe("foo");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+
+        let httpWithHeaders = new httpm.HttpClient();
+        httpWithHeaders.requestOptions = {
+            headers: {
+                [httpm.Headers.Accept]: "baz"
+            }
+        };
+        jsonObj = await httpWithHeaders.getJson<any>('https://httpbin.org/get');
+        expect(jsonObj.result.headers["Accept"]).toBe("baz");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+    });
+
+    it('preserves existing headers on postJson', async() => {
+        let additionalHeaders = { [httpm.Headers.Accept]: "foo" };
+        let jsonObj: ifm.ITypedResponse<any> = await _http.postJson<any>('https://httpbin.org/post', {}, additionalHeaders);
+        expect(jsonObj.result.headers["Accept"]).toBe("foo");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+
+        let httpWithHeaders = new httpm.HttpClient();
+        httpWithHeaders.requestOptions = {
+            headers: {
+                [httpm.Headers.Accept]: "baz"
+            }
+        };
+        jsonObj = await httpWithHeaders.postJson<any>('https://httpbin.org/post', {});
+        expect(jsonObj.result.headers["Accept"]).toBe("baz");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+    });
+
+    it('preserves existing headers on putJson', async() => {
+        let additionalHeaders = { [httpm.Headers.Accept]: "foo" };
+        let jsonObj: ifm.ITypedResponse<any> = await _http.putJson<any>('https://httpbin.org/put', {}, additionalHeaders);
+        expect(jsonObj.result.headers["Accept"]).toBe("foo");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+
+        let httpWithHeaders = new httpm.HttpClient();
+        httpWithHeaders.requestOptions = {
+            headers: {
+                [httpm.Headers.Accept]: "baz"
+            }
+        };
+        jsonObj = await httpWithHeaders.putJson<any>('https://httpbin.org/put', {});
+        expect(jsonObj.result.headers["Accept"]).toBe("baz");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+    });
+
+    it('preserves existing headers on patchJson', async() => {
+        let additionalHeaders = { [httpm.Headers.Accept]: "foo" };
+        let jsonObj: ifm.ITypedResponse<any> = await _http.patchJson<any>('https://httpbin.org/patch', {}, additionalHeaders);
+        expect(jsonObj.result.headers["Accept"]).toBe("foo");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+
+        let httpWithHeaders = new httpm.HttpClient();
+        httpWithHeaders.requestOptions = {
+            headers: {
+                [httpm.Headers.Accept]: "baz"
+            }
+        };
+        jsonObj = await httpWithHeaders.patchJson<any>('https://httpbin.org/patch', {});
+        expect(jsonObj.result.headers["Accept"]).toBe("baz");
+        expect(jsonObj.headers[httpm.Headers.ContentType]).toBe(httpm.MediaTypes.ApplicationJson);
+    });
+
+});