ServiceWorker: support Response.{status,statusText,headers} [blink] (2/3)

LayoutTests/http/tests/serviceworker/resources/headermap-worker.js

+importScripts('worker-test-helpers.js');
+
+test(function() {
+    var headerMap = {

[jsbell, 2014/05/23 20:59:49]

Rename this to 'expectedMap'? header vs. headerMap vs. HeaderMap gets confusing.

[kinuko, 2014/05/26 05:45:13]

Done.

+        'Content-Language': 'ja',
+        'Content-Type': 'text/html; charset=UTF-8',
+        'X-ServiceWorker-Test': 'response test field'
+    };
+
+    var headers = new HeaderMap;
+    Object.keys(headerMap).forEach(function(key) {
+        headers.set(key, headerMap[key]);
+    });
+
+    // 'size()'

[jsbell, 2014/05/23 20:59:49]

nit: 'size' - no ()

[kinuko, 2014/05/26 05:45:13]

Done.

+    assert_equals(headers.size, 3, 'Response.headers.size should match');

[falken, 2014/05/24 14:32:36]

Remove "Response."?

[kinuko, 2014/05/26 05:45:13]

Done.

+
+    // 'has()', 'get()'
+    var key = 'Content-Type';
+    assert_true(headers.has(key));
+    assert_equals(headers.get(key), headerMap[key]);
+
+    // 'delete()'
+    var deleteKey = 'Content-Type';
+    headers.delete(deleteKey);
+    assert_equals(headers.size, 2, 'headers.size should have -1 size');
+    Object.keys(headerMap).forEach(function(key) {
+        if (key == deleteKey)
+            assert_false(headers.has(key));
+        else
+            assert_true(headers.has(key));
+    });
+
+    // 'set()'

[jsbell, 2014/05/23 20:59:49]

Since this is [MapClass(DOMString,DOMString)], add a case which sets a number
and verifies that it gets a string back out?

[jsbell, 2014/05/23 20:59:49]

Do we want to toss in a case-sensitivity test?

(HTTP headers are case-insensitive e.g. in XHR, but I'm not seeing anything in
the SW or WebIDL spec that would apply that here.)

[kinuko, 2014/05/26 05:45:13]

Done. For now I just added a FIXME comment about case-insensitivity behavior
possibility.

+    var newKey = 'Cache-Control';
+    var newValue = 'max-age=3600';
+    headers.set(newKey, newValue);
+    assert_true(headers.has(newKey));
+    assert_equals(headers.get(newKey), newValue);

[falken, 2014/05/24 14:32:36]

Maybe throw in a headers.size == 3 assert? Also, a test for .set() mutating an
existing value?

[kinuko, 2014/05/26 05:45:13]

Done.

+
+    // 'forEach()'
+    headers.forEach(function(value, key) {
+        assert_true(key != deleteKey);
+        if (key != newKey) {
+            assert_true(key in headerMap);
+            assert_equals(headers.get(key), headerMap[key]);
+        } else {
+            assert_equals(headers.get(key), newValue);
+        }
+    });
+
+}, 'HeaderMap in ServiceWorkerGlobalScope');
+