[node] Add test for request not found

platform/node/test/js/request_notfound.test.js

@@ -0,0 +1,74 @@
+'use strict';
+
+var mockfs = require('../mockfs');
+var mbgl = require('../../index');
+var test = require('tape');
+
+function isTile(data) {
+    return data == mockfs.tile_vector || data == mockfs.tile_raster;
+}
+
+function asyncReply(callback, data) {
+    setTimeout(function() { callback(null, { data: data }); }, 0);
+};
+
+function asyncFail(callback, data) {
+    // Do not set an error for tile when not found. A not found
+    // tile is a valid tile.
+    if (isTile(data)) {
+        setTimeout(function() { callback(); }, 0);
+    } else {
+        setTimeout(function() { callback(new Error('not found')); }, 0);
+    }
+};
+
+function notfoundRequest(t, style, notfoundResource) {
+    var options = {
+        request: function(req, callback) {
+            var data = mockfs.dataForRequest(req);
+
+            if (notfoundResource != data) {
+                asyncReply(callback, data);
+            } else {
+                asyncFail(callback, data);
+            }
+        },
+        ratio: 2,
+    };
+
+    var map = new mbgl.Map(options);
+    map.load(style);
+
+    map.render({ zoom: 16 }, function(err, pixels) {
+        if (err && !isTile(notfoundResource)) {
+            t.pass("pass");
+            return;
+        }
+
+        if (!err && isTile(notfoundResource)) {
+            t.pass("pass");
+            return;
+        }
+
+        t.fail("fail");
+    });
+};
+
+test('Vector', function(t) {
+    t.plan(5);
+
+    notfoundRequest(t, mockfs.style_vector, mockfs.sprite_png);
+    notfoundRequest(t, mockfs.style_vector, mockfs.sprite_json);
+    notfoundRequest(t, mockfs.style_vector, mockfs.source_vector);
+    notfoundRequest(t, mockfs.style_vector, mockfs.tile_vector);
+    notfoundRequest(t, mockfs.style_vector, mockfs.glyph);
+});
+
+test('Raster', function(t) {
+    t.plan(4);
+
+    notfoundRequest(t, mockfs.style_raster, mockfs.sprite_png);
+    notfoundRequest(t, mockfs.style_raster, mockfs.sprite_json);
+    notfoundRequest(t, mockfs.style_raster, mockfs.source_raster);
+    notfoundRequest(t, mockfs.style_raster, mockfs.tile_raster);
+});