test(sdk-metrics): browser compatibility tests (#2709)

experimental/packages/opentelemetry-sdk-metrics-base/karma.conf.js

@@ -0,0 +1,24 @@
+/*!
+ * Copyright The OpenTelemetry Authors
+ *
+ * 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.
+ */
+
+const karmaWebpackConfig = require('../../../karma.webpack');
+const karmaBaseConfig = require('../../../karma.base');
+
+module.exports = (config) => {
+  config.set(Object.assign({}, karmaBaseConfig, {
+    webpack: karmaWebpackConfig
+  }))
+};

experimental/packages/opentelemetry-sdk-metrics-base/package.json

@@ -12,7 +12,9 @@
     "compile": "tsc --build tsconfig.all.json",
     "clean": "tsc --build --clean tsconfig.all.json",
     "test": "nyc ts-mocha -p tsconfig.json 'test/**/*.test.ts'",
+    "test:browser": "nyc karma start --single-run",
     "tdd": "npm run test -- --watch-extensions ts --watch",
+    "tdd:browser": "karma start",
     "codecov": "nyc report --reporter=json && codecov -f coverage/*.json -p ../../",
     "lint": "eslint . --ext .ts",
     "lint:fix": "eslint . --ext .ts --fix",
@@ -57,6 +59,12 @@
     "@types/node": "14.17.33",
     "@types/sinon": "10.0.6",
     "codecov": "3.8.3",
+    "karma": "6.3.8",
+    "karma-chrome-launcher": "3.1.0",
+    "karma-coverage-istanbul-reporter": "3.0.3",
+    "karma-mocha": "2.0.1",
+    "karma-spec-reporter": "0.0.32",
+    "karma-webpack": "4.0.2",
     "mocha": "7.2.0",
     "nyc": "15.1.0",
     "rimraf": "3.0.2",

experimental/packages/opentelemetry-sdk-metrics-base/test/export/PeriodicExportingMetricReader.test.ts

@@ -22,6 +22,7 @@ import * as assert from 'assert';
 import * as sinon from 'sinon';
 import { MetricProducer } from '../../src/export/MetricProducer';
 import { TimeoutError } from '../../src/utils';
+import { assertRejects } from '../test-utils';
 
 const MAX_32_BIT_INT = 2 ** 31 - 1;
 
@@ -102,7 +103,7 @@ describe('PeriodicExportingMetricReader', () => {
         exporter: exporter,
         exportIntervalMillis: 0,
         exportTimeoutMillis: 0
-      }), new Error('exportIntervalMillis must be greater than 0'));
+      }), /exportIntervalMillis must be greater than 0/);
     });
 
     it('should throw when timeout less or equal to 0', () => {
@@ -111,7 +112,7 @@ describe('PeriodicExportingMetricReader', () => {
         exporter: exporter,
         exportIntervalMillis: 1,
         exportTimeoutMillis: 0
-      }), new Error('exportTimeoutMillis must be greater than 0'));
+      }), /exportTimeoutMillis must be greater than 0/);
     });
 
     it('should throw when timeout less or equal to interval', () => {
@@ -120,7 +121,7 @@ describe('PeriodicExportingMetricReader', () => {
         exporter: exporter,
         exportIntervalMillis: 100,
         exportTimeoutMillis: 200
-      }), new Error('exportIntervalMillis must be greater than or equal to exportTimeoutMillis'));
+      }), /exportIntervalMillis must be greater than or equal to exportTimeoutMillis/);
     });
 
     it('should not start exporting', async () => {
@@ -151,7 +152,7 @@ describe('PeriodicExportingMetricReader', () => {
       reader.setMetricProducer(new TestMetricProducer());
       const result = await exporter.waitForNumberOfExports(2);
 
-      assert.deepEqual(result, [[], []]);
+      assert.deepStrictEqual(result, [[], []]);
       await reader.shutdown();
     });
   });
@@ -169,7 +170,7 @@ describe('PeriodicExportingMetricReader', () => {
       reader.setMetricProducer(new TestMetricProducer());
 
       const result = await exporter.waitForNumberOfExports(2);
-      assert.deepEqual(result, [[], []]);
+      assert.deepStrictEqual(result, [[], []]);
 
       exporter.throwException = false;
       await reader.shutdown();
@@ -188,7 +189,7 @@ describe('PeriodicExportingMetricReader', () => {
       reader.setMetricProducer(new TestMetricProducer());
 
       const result = await exporter.waitForNumberOfExports(2);
-      assert.deepEqual(result, [[], []]);
+      assert.deepStrictEqual(result, [[], []]);
 
       exporter.throwException = false;
       await reader.shutdown();
@@ -227,7 +228,7 @@ describe('PeriodicExportingMetricReader', () => {
       });
 
       reader.setMetricProducer(new TestMetricProducer());
-      await assert.rejects(() => reader.forceFlush({ timeoutMillis: 20 }),
+      await assertRejects(() => reader.forceFlush({ timeoutMillis: 20 }),
         TimeoutError);
       await reader.shutdown();
     });
@@ -241,7 +242,7 @@ describe('PeriodicExportingMetricReader', () => {
         exportTimeoutMillis: 80,
       });
 
-      await assert.rejects(() => reader.forceFlush());
+      await assertRejects(() => reader.forceFlush(), /Error during forceFlush/);
     });
 
     it('should not forceFlush exporter after shutdown', async () => {
@@ -294,7 +295,7 @@ describe('PeriodicExportingMetricReader', () => {
       });
 
       reader.setMetricProducer(new TestMetricProducer());
-      await assert.rejects(() => reader.shutdown({ timeoutMillis: 20 }),
+      await assertRejects(() => reader.shutdown({ timeoutMillis: 20 }),
         TimeoutError);
     });
 
@@ -326,7 +327,7 @@ describe('PeriodicExportingMetricReader', () => {
         exportTimeoutMillis: 80,
       });
 
-      await assert.rejects(() => reader.shutdown());
+      await assertRejects(() => reader.shutdown(), /Error during forceFlush/);
     });
   })
   ;
@@ -340,7 +341,7 @@ describe('PeriodicExportingMetricReader', () => {
         exportTimeoutMillis: 80,
       });
 
-      await assert.rejects(() => reader.collect());
+      await assertRejects(() => reader.collect(), /MetricReader is not bound to a MetricProducer/);
     });
 
     it('should return empty on shut-down instance', async () => {
@@ -354,7 +355,7 @@ describe('PeriodicExportingMetricReader', () => {
       reader.setMetricProducer(new TestMetricProducer());
 
       await reader.shutdown();
-      assert.deepEqual([], await reader.collect());
+      assert.deepStrictEqual([], await reader.collect());
     });
 
     it('should time out when timeoutMillis is set', async () => {
@@ -368,7 +369,7 @@ describe('PeriodicExportingMetricReader', () => {
       producer.collectionTime = 40;
       reader.setMetricProducer(producer);
 
-      await assert.rejects(
+      await assertRejects(
         () => reader.collect({ timeoutMillis: 20 }),
         TimeoutError
       );

experimental/packages/opentelemetry-sdk-metrics-base/test/index-webpack.ts

@@ -0,0 +1,21 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * 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
+ *
+ *      https://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.
+ */
+
+const testsContext = require.context('.', true, /test$/);
+testsContext.keys().forEach(testsContext);
+
+const srcContext = require.context('.', true, /src$/);
+srcContext.keys().forEach(srcContext);

experimental/packages/opentelemetry-sdk-metrics-base/test/test-utils.ts

@@ -0,0 +1,45 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ *
+ * 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
+ *
+ *      https://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.
+ */
+
+/**
+ * Changes to this file should be applied to opentelemetry-core/test/test-utils.ts too.
+ */
+
+import * as assert from 'assert';
+
+interface ErrorLikeConstructor {
+  new(): Error;
+}
+
+/**
+ * Node.js v8.x and browser compatible `assert.rejects`.
+ */
+export async function assertRejects(actual: any, expected: RegExp | ErrorLikeConstructor) {
+  let rejected;
+  try {
+    if (typeof actual === 'function') {
+      await actual();
+    } else {
+      await actual;
+    }
+  } catch (err) {
+    rejected = true;
+    assert.throws(() => {
+      throw err;
+    }, expected);
+  }
+  assert(rejected, 'Promise not rejected');
+}

packages/opentelemetry-core/test/test-utils.ts

@@ -16,15 +16,26 @@
 
 import * as assert from 'assert';
 
+interface ErrorLikeConstructor {
+  new(): Error;
+}
+
 /**
  * Node.js v8.x and browser compatible `assert.rejects`.
  */
-export async function assertRejects(promise: any, expect: any) {
+export async function assertRejects(actual: any, expected: RegExp | ErrorLikeConstructor) {
+  let rejected;
   try {
-    await promise;
+    if (typeof actual === 'function') {
+      await actual();
+    } else {
+      await actual;
+    }
   } catch (err) {
+    rejected = true;
     assert.throws(() => {
       throw err;
-    }, expect);
+    }, expected);
   }
+  assert(rejected, 'Promise not rejected');
 }