Add "_test" suffix to environment test file

ts/test-both/environment_test.ts

@@ -0,0 +1,41 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+import { assert } from 'chai';
+
+import { parseEnvironment, Environment } from '../environment';
+
+describe('environment utilities', () => {
+  describe('parseEnvironment', () => {
+    it('returns Environment.Production for non-strings', () => {
+      assert.equal(parseEnvironment(undefined), Environment.Production);
+      assert.equal(parseEnvironment(0), Environment.Production);
+    });
+
+    it('returns Environment.Production for invalid strings', () => {
+      assert.equal(parseEnvironment(''), Environment.Production);
+      assert.equal(parseEnvironment(' development '), Environment.Production);
+      assert.equal(parseEnvironment('PRODUCTION'), Environment.Production);
+    });
+
+    it('parses "development" as Environment.Development', () => {
+      assert.equal(parseEnvironment('development'), Environment.Development);
+    });
+
+    it('parses "production" as Environment.Production', () => {
+      assert.equal(parseEnvironment('production'), Environment.Production);
+    });
+
+    it('parses "staging" as Environment.Staging', () => {
+      assert.equal(parseEnvironment('staging'), Environment.Staging);
+    });
+
+    it('parses "test" as Environment.Test', () => {
+      assert.equal(parseEnvironment('test'), Environment.Test);
+    });
+
+    it('parses "test-lib" as Environment.TestLib', () => {
+      assert.equal(parseEnvironment('test-lib'), Environment.TestLib);
+    });
+  });
+});