test: adding unit test to buffer.ts

Author: eldreygalindo

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

@@ -0,0 +1,92 @@
+/**
+ * Copyright 2018 Google Inc. All Rights Reserved.
+ *
+ * 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.
+ */
+
+import * as assert from 'assert';
+import * as mocha from 'mocha';
+
+import {Buffer} from '../src/exporters/buffer';
+import {NoopExporter} from '../src/exporters/consolelog-exporter';
+import {RootSpanImpl} from '../src/trace/model/rootspan';
+import {TracerImpl} from '../src/trace/model/tracer';
+
+const exporter = new NoopExporter();
+const DEFAULT_BUFFER_SIZE = 3;
+const DEFAULT_BUFFER_TIMEOUT = 20000;  // time in milliseconds
+const tracer = new TracerImpl();
+
+
+describe('Buffer', () => {
+  /**
+   * Should create a Buffer with exporter, DEFAULT_BUFFER_SIZE and
+   * DEFAULT_BUFFER_TIMEOUT
+   */
+  describe('new Buffer()', () => {
+    it('should create a Buffer instance', () => {
+      const buffer =
+          new Buffer(exporter, DEFAULT_BUFFER_SIZE, DEFAULT_BUFFER_TIMEOUT);
+      assert.ok(buffer instanceof Buffer);
+    });
+  });
+
+  /**
+   * Should return the Buffer
+   */
+  describe('setBufferSize', () => {
+    it('should return the Buffer instance', () => {
+      const buffer = new Buffer(exporter);
+      const bufferResize = buffer.setBufferSize(DEFAULT_BUFFER_SIZE);
+      assert.ok(bufferResize instanceof Buffer);
+    });
+  });
+
+  /**
+   * Should return the Buffer with rootspan
+   */
+  describe('addToBuffer', () => {
+    it('should return the Buffer instance', () => {
+      const buffer = new Buffer(exporter);
+      const rootSpan = new RootSpanImpl(tracer);
+      const bufferAdd = buffer.addToBuffer(rootSpan);
+      assert.ok(bufferAdd instanceof Buffer);
+    });
+  });
+
+  /**
+   * Should return the Buffer without rootspan
+   */
+  describe('addToBuffer force flush ', () => {
+    it('should return the Buffer instance', () => {
+      const buffer = new Buffer(exporter);
+      const bufferResize = buffer.setBufferSize(0);
+      const rootSpan = new RootSpanImpl(tracer);
+      const bufferAdd = bufferResize.addToBuffer(rootSpan);
+      assert.ok(bufferAdd instanceof Buffer);
+    });
+  });
+
+  /**
+   * Should return the Buffer without rootspan
+   */
+  describe('addToBuffer force flush by timeout ', () => {
+    it('should return the Buffer instance', () => {
+      const buffer = new Buffer(exporter, DEFAULT_BUFFER_SIZE, 0);
+      const rootSpan = new RootSpanImpl(tracer);
+      let bufferAdd = buffer.addToBuffer(rootSpan);
+      bufferAdd = buffer.addToBuffer(rootSpan);
+      assert.ok(bufferAdd instanceof Buffer);
+    });
+  });
+});