Default to sending Accept and Content-Type headers for json

__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);
+    });
+
+});