Use ts-mocha to run tests (#444)

* Use ts-mocha to run tests

* Add compile step to CI

* Update all packages to use ts-mocha

* Fix typo around pjsonVersion

* Delete spurious blank line

* Get .ts coverage for all packages

* Undo changes to opencensus-nodejs/package.json.  It needs to be compiled to .js to get the tests to pass.

* Undo ts-mocha for redis package

* Don't use ts-mocha for ocagent

* Revert package-lock.json and ocagent.ts since we aren't going to change package.json as part of this PR.

* Remove unnecessary nyc block

* Undo changes to package-lock.json

* Handle templatesDir

.circleci/config.yml

@@ -14,6 +14,9 @@ unit_tests: &unit_tests
     - run:
         name: Install modules and dependencies.
         command: npm install
+    - run:
+        name: Ensure code compiles to JS.
+        command: npm run compile
     - run:
         name: Run unit tests.
         command: npm run test

packages/opencensus-core/package.json

@@ -6,15 +6,14 @@
   "types": "build/src/index.d.ts",
   "repository": "census-instrumentation/opencensus-node",
   "scripts": {
-    "test": "nyc mocha build/test/**/*.js",
+    "test": "nyc ts-mocha -p ./tsconfig.json test/**/*.ts",
     "codecov": "nyc report --reporter=json && codecov -f coverage/*.json",
     "clean": "rimraf build/*",
     "check": "gts check",
     "compile": "tsc -p .",
     "compile:release": "tsc -p tsconfig-release.json",
     "fix": "gts fix",
     "prepare": "npm run compile:release",
-    "pretest": "npm run compile",
     "posttest": "npm run check"
   },
   "keywords": [
@@ -38,6 +37,16 @@
     "LICENSE",
     "README.md"
   ],
+  "nyc": {
+    "extension": [
+      ".ts",
+      ".tsx"
+    ],
+    "exclude": [
+      "**/*.d.ts"
+    ],
+    "all": true  
+  },
   "publishConfig": {
     "access": "public"
   },
@@ -54,6 +63,7 @@
     "intercept-stdout": "^0.1.2",
     "mocha": "^6.0.0",
     "nyc": "13.3.0",
+    "ts-mocha": "^6.0.0",
     "ts-node": "^8.0.0",
     "typescript": "~2.9.0"
   },

packages/opencensus-core/src/common/version.ts

@@ -20,9 +20,16 @@ type Package = {
 };
 
 // Load the package details. Note that the `require` is performed at runtime,
-// which means the source files will be in the `/build` directory, so the
-// package path is relative to that location.
-const pjson: Package = require('../../../package.json');
+// which means package.json will be relative to the location of this file.
+// If this file has been compiled, it will be in the `/build` directory, so the
+// package path is relative to that location.  Otherwise, it will be relative
+// to the original .ts file.
+let pjson: Package;
+try {
+  pjson = require('../../../package.json');
+} catch {
+  pjson = require('../../package.json');
+}
 
 // Export the core package version
 export const version: string = pjson.version;

packages/opencensus-exporter-instana/package.json

@@ -6,14 +6,13 @@
   "types": "build/src/index.d.ts",
   "repository": "census-instrumentation/opencensus-node",
   "scripts": {
-    "test": "nyc mocha build/test/**/*.js",
+    "test": "nyc ts-mocha -p ./tsconfig.json test/**/*.ts",
     "codecov": "nyc report --reporter=json && codecov -f coverage/*.json",
     "clean": "rimraf build/*",
     "check": "gts check",
     "compile": "tsc -p .",
     "fix": "gts fix",
     "prepare": "npm run compile",
-    "pretest": "npm run compile",
     "posttest": "npm run check"
   },
   "keywords": [
@@ -36,6 +35,16 @@
     "LICENSE",
     "README.md"
   ],
+  "nyc": {
+    "extension": [
+      ".ts",
+      ".tsx"
+    ],
+    "exclude": [
+      "**/*.d.ts"
+    ],
+    "all": true  
+  },
   "publishConfig": {
     "access": "public"
   },
@@ -48,6 +57,7 @@
     "mocha": "^6.0.0",
     "nock": "^10.0.0",
     "nyc": "13.3.0",
+    "ts-mocha": "^6.0.0",
     "ts-node": "^8.0.0",
     "typescript": "~3.2.0"
   },