Adding a protocol for reading features cross-origin from services that support JSON with a callback. r=erilem (closes #2956)
git-svn-id: http://svn.openlayers.org/trunk/openlayers@11691 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
This commit is contained in:
Tim Schaub
271
tests/Protocol/Script.html
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271
tests/Protocol/Script.html
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<html>
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<head>
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<script src="../../lib/OpenLayers.js"></script>
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<script type="text/javascript">
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function test_constructor(t) {
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t.plan(11);
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var a = new OpenLayers.Protocol.Script({
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url: "foo"
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});
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// 7 tests
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t.eq(a.url, "foo", "constructor sets url");
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t.eq(a.options.url, a.url, "constructor copies url to options.url");
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t.eq(a.params, {}, "constructor sets params");
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t.eq(a.options.params, undefined, "constructor does not copy params to options.params");
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t.ok(a.format instanceof OpenLayers.Format.GeoJSON,
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"constructor sets a GeoJSON format by default");
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t.eq(a.callbackKey, 'callback',
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"callbackKey is set to 'callback' by default");
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t.eq(a.callbackPrefix, '',
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"callbackPrefix is set to '' by default");
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var params = {hello: "world"};
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var b = new OpenLayers.Protocol.Script({
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url: "bar",
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params: params,
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callbackKey: 'cb_key',
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callbackPrefix: 'cb_prefix'
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});
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// 6 tests
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t.eq(b.params, params, "constructor sets params");
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t.eq(b.options.params, b.params, "constructor copies params to options.params");
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t.eq(b.callbackKey, 'cb_key',
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"callbackKey is set to 'cb_key'");
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t.eq(b.callbackPrefix, 'cb_prefix',
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"callbackPrefix is set to 'cb_prefix'");
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}
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function test_destroy(t) {
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t.plan(3);
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var aborted = false;
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var protocol = new OpenLayers.Protocol.Script({
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url: "bar",
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params: {hello: "world"},
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abort: function() {
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aborted = true;
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}
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});
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protocol.destroy();
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t.ok(aborted, "destroy aborts request");
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t.eq(protocol.params, null, "destroy nullifies params");
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t.eq(protocol.format, null, "destroy nullifies format");
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}
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function test_read(t) {
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t.plan(5);
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var protocol = new OpenLayers.Protocol.Script({
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'url': 'foo_url',
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'params': {'k': 'foo_param'}
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});
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// fake XHR request object
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var request = {'status': 200};
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// options to pass to read
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var readOptions = {
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'url': 'bar_url',
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'params': {'k': 'bar_param'}
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};
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var response;
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protocol.createRequest = function(url, params, callback) {
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// 4 tests
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t.ok(this == protocol,
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'createRequest called with correct scope');
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t.ok(url == readOptions.url,
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'createRequest called with correct url');
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t.ok(params == readOptions.params,
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'createRequest called with correct params');
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t.ok(callback instanceof Function,
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'createRequest called with a function as callback');
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return 'foo_request';
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};
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var resp = protocol.read(readOptions);
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t.eq(resp.priv, 'foo_request',
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'response priv property set to what the createRequest method returns');
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}
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function test_read_bbox(t) {
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t.plan(6);
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var _createRequest = OpenLayers.Protocol.Script.prototype.createRequest;
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var bounds = new OpenLayers.Bounds(1, 2, 3, 4);
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var filter = new OpenLayers.Filter.Spatial({
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type: OpenLayers.Filter.Spatial.BBOX,
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value: bounds,
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projection: new OpenLayers.Projection("foo")
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});
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// log requests
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var log, exp;
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OpenLayers.Protocol.Script.prototype.createRequest = function(url, params,
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callback) {
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log.push(params.bbox);
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return null;
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};
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// 1) issue request with default protocol
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log = [];
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new OpenLayers.Protocol.Script().read({filter: filter});
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t.eq(log.length, 1, "1) createRequest called once");
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t.ok(log[0] instanceof Array, "1) bbox param is array");
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exp = bounds.toArray();
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t.eq(log[0], exp, "1) bbox param doesn't include SRS id by default");
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// 2) issue request with default protocol
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log = [];
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new OpenLayers.Protocol.Script({srsInBBOX: true}).read({filter: filter});
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t.eq(log.length, 1, "2) createRequest called once");
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t.ok(log[0] instanceof Array, "2) bbox param is array");
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exp = bounds.toArray();
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exp.push("foo");
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t.eq(log[0], exp, "2) bbox param includes SRS id if srsInBBOX is true");
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OpenLayers.Protocol.Script.prototype.createRequest = _createRequest;
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}
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function test_createRequest(t) {
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t.plan(3);
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var protocol = new OpenLayers.Protocol.Script({
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callbackKey: 'cb_key',
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callbackPrefix: 'cb_prefix:'
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});
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var _register = OpenLayers.Protocol.Script.register;
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OpenLayers.Protocol.Script.register = function() {
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return 'bar';
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};
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var script = protocol.createRequest('http://bar_url/', {'k': 'bar_param'}, 'bar_callback');
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t.eq(script.type, 'text/javascript',
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'created script has a correct type');
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t.eq(script.src, 'http://bar_url/?k=bar_param&cb_key=cb_prefix%3AOpenLayers.Protocol.Script.getCallback(bar)',
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'created script has a correct url');
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t.eq(script.id, 'OpenLayers_Protocol_Script_bar',
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'created script has a correct id');
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OpenLayers.Protocol.Script.register = _register;
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}
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function test_destroyRequest(t) {
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t.plan(2);
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var protocol = new OpenLayers.Protocol.Script({});
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var _unregister = OpenLayers.Protocol.Script.unregister;
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OpenLayers.Protocol.Script.unregister = function(id) {
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t.eq(id, 'foo', "destroyRequest calls unregister with correct id");
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};
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var script = {
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id: 'script_foo'
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};
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protocol.destroyRequest(script);
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t.eq(protocol.pendingRequests[script.id], null,
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"destroyRequest nullifies the pending request");
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OpenLayers.Protocol.Script.unregister = _unregister;
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}
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function test_handleResponse(t) {
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t.plan(8);
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var protocol = new OpenLayers.Protocol.Script();
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// 2 tests (should be called only twive)
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protocol.destroyRequest = function(priv) {
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t.eq(priv, 'foo_priv', 'destroyRequest called with correct argument');
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}
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// 1 test (should be called only once)
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protocol.parseFeatures = function(data) {
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t.eq(data, 'foo_data', 'parseFeatures called with correct argument');
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return 'foo_features';
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}
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var response = {
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priv: 'foo_priv',
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data: 'foo_data'
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}
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var options = {
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// 2 tests (should be called twice)
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scope: 'foo_scope',
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callback: function(resp) {
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t.eq(this, 'foo_scope', 'callback called with correct scope');
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}
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}
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protocol.handleResponse(response, options);
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// 2 tests
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t.eq(response.code, OpenLayers.Protocol.Response.SUCCESS,
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'response code correctly set');
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t.eq(response.features, 'foo_features',
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'response features takes a correct value');
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response = {
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priv: 'foo_priv'
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}
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protocol.handleResponse(response, options);
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// 1 test
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t.eq(response.code, OpenLayers.Protocol.Response.FAILURE,
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'response code correctly set');
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}
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function test_parseFeatures(t) {
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t.plan(1);
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var protocol = new OpenLayers.Protocol.Script();
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protocol.format = {
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'read': function(data) {
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t.ok(true, 'format.read called');
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}
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};
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var ret = protocol.parseFeatures({foo: 'bar'});
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}
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function test_abort(t) {
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t.plan(2);
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var protocol = new OpenLayers.Protocol.Script();
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// 1 test
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protocol.destroyRequest = function(priv) {
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t.eq(priv, 'foo_priv', 'destroyRequest called with correct argument');
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}
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var response = {
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priv: 'foo_priv'
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}
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protocol.abort(response);
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var calls = [];
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protocol.pendingRequests = {
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'foo': 'foo_request',
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'bar': 'bar_request'
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}
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protocol.destroyRequest = function(priv) {
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calls.push(priv);
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}
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protocol.abort();
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// 1 test
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t.eq(calls, ['foo_request', 'bar_request'],
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'destroyRequest called for each pending requests');
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}
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</script>
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</head>
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<body>
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</body>
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</html>
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