1 files changed, 367 insertions, 0 deletions
diff --git a/dom/tests/unit/test_Fetch.js b/dom/tests/unit/test_Fetch.js
new file mode 100644
index 0000000000..768cf671dd
--- /dev/null
+++ b/dom/tests/unit/test_Fetch.js
@@ -0,0 +1,367 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+const { HttpServer } = ChromeUtils.importESModule(
+  "resource://testing-common/httpd.sys.mjs"
+);
+
+const BinaryInputStream = Components.Constructor(
+  "@mozilla.org/binaryinputstream;1",
+  "nsIBinaryInputStream",
+  "setInputStream"
+);
+
+var server;
+
+function getBaseUrl() {
+  return "http://localhost:" + server.identity.primaryPort;
+}
+
+// a way to create some test defaults
+function createTestData(testPath) {
+  return {
+    testPath,
+    request: {
+      headers: {},
+      contentType: "application/json",
+    },
+    response: {
+      headers: {},
+      contentType: "application/json",
+      body: '{"Look": "Success!"}',
+      status: 200,
+      statusText: "OK",
+    },
+  };
+}
+
+// read body and content type information from a request
+function readDataFromRequest(aRequest) {
+  let requestData = {};
+  if (aRequest.method == "POST" || aRequest.method == "PUT") {
+    if (aRequest.bodyInputStream) {
+      let inputStream = new BinaryInputStream(aRequest.bodyInputStream);
+      let bytes = [];
+      let available;
+
+      while ((available = inputStream.available()) > 0) {
+        Array.prototype.push.apply(bytes, inputStream.readByteArray(available));
+      }
+
+      requestData.body = String.fromCharCode.apply(null, bytes);
+      requestData.contentType = aRequest.getHeader("Content-Type");
+    }
+  }
+  return requestData;
+}
+
+// write status information, content type information and body to a response
+function writeDataToResponse(aData, aResponse) {
+  aResponse.setStatusLine(null, aData.status, aData.statusText);
+  aResponse.setHeader("Content-Type", aData.contentType);
+  for (let header in aData.headers) {
+    aResponse.setHeader(header, aData.headers[header]);
+  }
+  aResponse.write(aData.body);
+}
+
+// test some GET functionality
+add_test(function test_GetData() {
+  do_test_pending();
+
+  let testData = createTestData("/getData");
+
+  // set up some headers to test
+  let headerNames = ["x-test-header", "x-other-test-header"];
+  for (let headerName of headerNames) {
+    testData.request.headers[headerName] = "test-value-for-" + headerName;
+  }
+
+  server.registerPathHandler(testData.testPath, function (aRequest, aResponse) {
+    try {
+      // check our request headers made it OK
+      for (let headerName of headerNames) {
+        Assert.equal(
+          testData.request.headers[headerName],
+          aRequest.getHeader(headerName)
+        );
+      }
+
+      // send a response
+      writeDataToResponse(testData.response, aResponse);
+    } catch (e) {
+      do_report_unexpected_exception(e);
+    }
+  });
+
+  // fetch, via GET, with some request headers set
+  fetch(getBaseUrl() + testData.testPath, { headers: testData.request.headers })
+    .then(function (response) {
+      // check response looks as expected
+      Assert.ok(response.ok);
+      Assert.equal(response.status, testData.response.status);
+      Assert.equal(response.statusText, testData.response.statusText);
+
+      // check a response header looks OK:
+      Assert.equal(
+        response.headers.get("Content-Type"),
+        testData.response.contentType
+      );
+
+      // ... and again to check header names are case insensitive
+      Assert.equal(
+        response.headers.get("content-type"),
+        testData.response.contentType
+      );
+
+      // ensure response.text() returns a promise that resolves appropriately
+      response.text().then(function (text) {
+        Assert.equal(text, testData.response.body);
+        do_test_finished();
+        run_next_test();
+      });
+    })
+    .catch(function (e) {
+      do_report_unexpected_exception(e);
+      do_test_finished();
+      run_next_test();
+    });
+});
+
+// test a GET with no init
+add_test(function test_GetDataNoInit() {
+  do_test_pending();
+
+  let testData = createTestData("/getData");
+
+  server.registerPathHandler(testData.testPath, function (aRequest, aResponse) {
+    try {
+      // send a response
+      writeDataToResponse(testData.response, aResponse);
+    } catch (e) {
+      do_report_unexpected_exception(e);
+    }
+  });
+
+  fetch(getBaseUrl() + testData.testPath, { headers: testData.request.headers })
+    .then(function (response) {
+      // check response looks as expected
+      Assert.ok(response.ok);
+      Assert.equal(response.status, testData.response.status);
+
+      // ensure response.text() returns a promise that resolves appropriately
+      response.text().then(function (text) {
+        Assert.equal(text, testData.response.body);
+        do_test_finished();
+        run_next_test();
+      });
+    })
+    .catch(function (e) {
+      do_report_unexpected_exception(e);
+      do_test_finished();
+      run_next_test();
+    });
+});
+
+// test some error responses
+add_test(function test_get40x() {
+  do_test_pending();
+
+  // prepare a response with some 40x error - a 404 will do
+  let notFoundData = createTestData("/getNotFound");
+  notFoundData.response.status = 404;
+  notFoundData.response.statusText = "Not found";
+  notFoundData.response.body = null;
+
+  // No need to register a path handler - httpd will return 404 anyway.
+  // Fetch, via GET, the resource that doesn't exist
+  fetch(getBaseUrl() + notFoundData.testPath).then(function (response) {
+    Assert.equal(response.status, 404);
+    do_test_finished();
+    run_next_test();
+  });
+});
+
+add_test(function test_get50x() {
+  do_test_pending();
+
+  // prepare a response with some server error - a 500 will do
+  let serverErrorData = createTestData("/serverError");
+  serverErrorData.response.status = 500;
+  serverErrorData.response.statusText = "The server broke";
+  serverErrorData.response.body = null;
+
+  server.registerPathHandler(
+    serverErrorData.testPath,
+    function (aRequest, aResponse) {
+      try {
+        // send the error response
+        writeDataToResponse(serverErrorData.response, aResponse);
+      } catch (e) {
+        do_report_unexpected_exception(e);
+      }
+    }
+  );
+
+  // fetch, via GET, the resource that creates a server error
+  fetch(getBaseUrl() + serverErrorData.testPath).then(function (response) {
+    Assert.equal(response.status, 500);
+    do_test_finished();
+    run_next_test();
+  });
+});
+
+// test a failure to connect
+add_test(function test_getTestFailedConnect() {
+  do_test_pending();
+  // try a server that's not there
+  fetch("http://localhost:4/should/fail")
+    .then(response => {
+      do_throw("Request should not succeed");
+    })
+    .catch(err => {
+      Assert.equal(true, err instanceof TypeError);
+      do_test_finished();
+      run_next_test();
+    });
+});
+
+add_test(function test_mozError() {
+  do_test_pending();
+  // try a server that's not there
+  fetch("http://localhost:4/should/fail", { mozErrors: true })
+    .then(response => {
+      do_throw("Request should not succeed");
+    })
+    .catch(err => {
+      Assert.equal(err.result, Cr.NS_ERROR_CONNECTION_REFUSED);
+      do_test_finished();
+      run_next_test();
+    });
+});
+
+add_test(function test_request_mozError() {
+  do_test_pending();
+  // try a server that's not there
+  const r = new Request("http://localhost:4/should/fail", { mozErrors: true });
+  fetch(r)
+    .then(response => {
+      do_throw("Request should not succeed");
+    })
+    .catch(err => {
+      Assert.equal(err.result, Cr.NS_ERROR_CONNECTION_REFUSED);
+      do_test_finished();
+      run_next_test();
+    });
+});
+
+// test POSTing some JSON data
+add_test(function test_PostJSONData() {
+  do_test_pending();
+
+  let testData = createTestData("/postJSONData");
+  testData.request.body = '{"foo": "bar"}';
+
+  server.registerPathHandler(testData.testPath, function (aRequest, aResponse) {
+    try {
+      let requestData = readDataFromRequest(aRequest);
+
+      // Check the request body is OK
+      Assert.equal(requestData.body, testData.request.body);
+
+      // Check the content type is as expected
+      Assert.equal(requestData.contentType, testData.request.contentType);
+
+      writeDataToResponse(testData.response, aResponse);
+    } catch (e) {
+      Assert.ok(false);
+    }
+  });
+
+  fetch(getBaseUrl() + testData.testPath, {
+    method: "POST",
+    body: testData.request.body,
+    headers: {
+      "Content-Type": "application/json",
+    },
+  })
+    .then(function (aResponse) {
+      Assert.ok(aResponse.ok);
+      Assert.equal(aResponse.status, testData.response.status);
+      Assert.equal(aResponse.statusText, testData.response.statusText);
+
+      do_test_finished();
+      run_next_test();
+    })
+    .catch(function (e) {
+      do_report_unexpected_exception(e);
+      do_test_finished();
+      run_next_test();
+    });
+});
+
+// test POSTing some text
+add_test(function test_PostTextData() {
+  do_test_pending();
+
+  let testData = createTestData("/postTextData");
+  testData.request.body = "A plain text body";
+  testData.request.contentType = "text/plain";
+  let responseHeaderName = "some-response-header";
+  testData.response.headers[responseHeaderName] = "some header value";
+
+  server.registerPathHandler(testData.testPath, function (aRequest, aResponse) {
+    try {
+      let requestData = readDataFromRequest(aRequest);
+
+      // Check the request body is OK
+      Assert.equal(requestData.body, testData.request.body);
+
+      // Check the content type is as expected
+      Assert.equal(requestData.contentType, testData.request.contentType);
+
+      writeDataToResponse(testData.response, aResponse);
+    } catch (e) {
+      Assert.ok(false);
+    }
+  });
+
+  fetch(getBaseUrl() + testData.testPath, {
+    method: "POST",
+    body: testData.request.body,
+    headers: {
+      "Content-Type": testData.request.contentType,
+    },
+  })
+    .then(function (aResponse) {
+      Assert.ok(aResponse.ok);
+      Assert.equal(aResponse.status, testData.response.status);
+      Assert.equal(aResponse.statusText, testData.response.statusText);
+
+      // check the response header is set OK
+      Assert.equal(
+        aResponse.headers.get(responseHeaderName),
+        testData.response.headers[responseHeaderName]
+      );
+
+      do_test_finished();
+      run_next_test();
+    })
+    .catch(function (e) {
+      do_report_unexpected_exception(e);
+      do_test_finished();
+      run_next_test();
+    });
+});
+
+function run_test() {
+  // Set up an HTTP Server
+  server = new HttpServer();
+  server.start(-1);
+
+  run_next_test();
+
+  registerCleanupFunction(function () {
+    server.stop(function () {});
+  });
+}