1 files changed, 110 insertions, 0 deletions
diff --git a/framework/src/onos/web/gui/src/main/webapp/tests/app/fw/util/random-spec.js b/framework/src/onos/web/gui/src/main/webapp/tests/app/fw/util/random-spec.js
new file mode 100644
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+++ b/framework/src/onos/web/gui/src/main/webapp/tests/app/fw/util/random-spec.js
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2014,2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/*
+ ONOS GUI -- Util -- Random Service - Unit Tests
+ */
+describe('factory: fw/util/random.js', function() {
+    var rnd, $log, fs;
+
+    beforeEach(module('onosUtil'));
+
+    beforeEach(inject(function (RandomService, _$log_, FnService) {
+        rnd = RandomService;
+        $log = _$log_;
+        fs = FnService;
+    }));
+
+    // interesting use of a custom matcher...
+    beforeEach(function () {
+        jasmine.addMatchers({
+            toBeWithinOf: function () {
+                return {
+                    compare: function (actual, distance, base) {
+                        var lower = base - distance,
+                            upper = base + distance,
+                            result = {};
+
+                        result.pass = Math.abs(actual - base) <= distance;
+
+                        if (result.pass) {
+                            // for negation with ".not"
+                            result.message = 'Expected ' + actual +
+                                ' to be outside ' + lower + ' and ' +
+                                upper + ' (inclusive)';
+                        } else {
+                            result.message = 'Expected ' + actual +
+                            ' to be between ' + lower + ' and ' +
+                            upper + ' (inclusive)';
+                        }
+                        return result;
+                    }
+                }
+            }
+        });
+    });
+
+    it('should define RandomService', function () {
+        expect(rnd).toBeDefined();
+    });
+
+    it('should define api functions', function () {
+        expect(fs.areFunctions(rnd, [
+            'spread', 'randDim'
+        ])).toBeTruthy();
+    });
+
+    // really, can only do this heuristically.. hope this doesn't break
+    it('should spread results across the range', function () {
+        var load = 1000,
+            s = 12,
+            low = 0,
+            high = 0,
+            i, res,
+            which = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
+            minCount = load / s * 0.5;  // generous error
+
+        for (i=0; i<load; i++) {
+            res = rnd.spread(s);
+            if (res < low) low = res;
+            if (res > high) high = res;
+            which[res + s/2]++;
+        }
+        expect(low).toBe(-6);
+        expect(high).toBe(5);
+
+        // check we got a good number of hits in each bucket
+        for (i=0; i<s; i++) {
+            expect(which[i]).toBeGreaterThan(minCount);
+        }
+    });
+
+    // really, can only do this heuristically.. hope this doesn't break
+    it('should choose results across the dimension', function () {
+        var load = 1000,
+            dim = 100,
+            low = 999,
+            high = 0,
+            i, res;
+
+        for (i=0; i<load; i++) {
+            res = rnd.randDim(dim);
+            if (res < low) low = res;
+            if (res > high) high = res;
+            expect(res).toBeWithinOf(36, 50);
+        }
+    });
+});