Moved TS_NODE_PROJECT configuration to mocha setup script

docs/in-depth/testing.md

@@ -60,7 +60,7 @@ In `package.json`, add a new `test-integration` script and add the new integrati
 
 ```json
   "scripts": {
-    "test": "export TS_NODE_PROJECT='./tsconfig.test.json' && npm run test-unit && npm run test-integration",
+    "test": "npm run test-unit && npm run test-integration",
     "test-integration": "npm run build && mocha test/integration/**/*.ts",
   }
 ```

package.json

@@ -10,7 +10,7 @@
     "push-main": "rollup -c --environment DEST:main",
     "push-pserver": "rollup -c --environment DEST:pserver",
     "push-sim": "rollup -c --environment DEST:sim",
-    "test": "export TS_NODE_PROJECT='./tsconfig.test.json' && npm run test-unit",
+    "test": "npm run test-unit",
     "test-unit": "mocha test/unit/**/*.ts",
     "test-integration": "echo 'See docs/in-depth/testing.md for instructions on enabling integration tests'",
     "watch-main": "rollup -cw --environment DEST:main",

test/mocha.opts

@@ -1,4 +1,4 @@
---require test/setup-node.js
+--require test/setup-mocha.js
 --require ts-node/register
 --require tsconfig-paths/register
 --ui bdd

test/setup-mocha.js

@@ -4,3 +4,6 @@ global.mocha = require('mocha');
 global.chai = require('chai');
 global.sinon = require('sinon');
 global.chai.use(require('sinon-chai'));
+
+// Override ts-node compiler options
+process.env.TS_NODE_PROJECT = 'tsconfig.test.json'