Add unit tests for span.ts

Author: luanamartinssantos

packages/opencensus-core/test/test-span.ts

@@ -0,0 +1,75 @@
+import { Span } from '../src/trace/span';
+import { Trace } from '../src/trace/trace';
+
+var assert = require('assert');
+
+describe('Span creation', function () {
+
+    let trace;
+    let span;
+
+    before(function () {
+        trace = new Trace();
+        span = trace.startSpan('spanName', 'typeSpan');
+    });
+
+    it('should create an span on the trace', function () {
+        assert.ok(trace instanceof Trace);
+        span = trace.startSpan('spanName', 'typeSpan');
+        assert.ok(span instanceof Span);
+        assert.ok(span.id);
+    });
+
+    it('should start a span', function () {
+        span.start();
+        assert.ok(span.started);
+    });
+
+    it('should end a span', function () {
+        span.end();
+        assert.ok(span.ended);
+    });
+});
+
+describe('Span checking creation', function () {
+
+    let trace;
+    let span;
+
+    before(function () {
+        trace = new Trace();
+        span = trace.startSpan('spanName', 'typeSpan');
+    });
+
+    it('should not start span after it ended', function () {
+        span.end();
+        assert.equal(span.ended, true);
+    });
+});
+
+describe('Span data', function () {
+
+    let trace;
+
+    before(function () {
+        trace = new Trace();
+    });
+
+    it('generates unique numeric span ID strings', function () {
+        var numberOfSpansToCheck = 5;
+        for (var i = 0; i < numberOfSpansToCheck; i++) {
+            var span = trace.startSpan('spanName' + i, 'typeSpan' + i);
+            var spanId = span.id;
+            assert.ok(typeof spanId === 'string');
+            assert.ok(spanId.match(/\d+/));
+            assert.ok(Number(spanId) > 0);
+            assert.strictEqual(Number(spanId).toString(), spanId);
+        }
+    });
+
+    // TODO
+    it('truncates namespace', function(){
+        this.skip();
+    });
+});
+