test: add helper function tests

Author: gnikit

test/helper.test.ts

@@ -0,0 +1,59 @@
+import { strictEqual } from 'assert';
+import {
+  isUri,
+  isString,
+  isNumber,
+  isBoolean,
+  isObject,
+  isArray,
+  isOptionalString,
+  isArrayOfString,
+  arraysEqual,
+  isPositionInString,
+} from '../src/lib/helper';
+import * as vscode from 'vscode';
+
+suite('helper functions isTypeVariable tests', () => {
+  test('isUri', () => {
+    strictEqual(true, isUri(vscode.Uri.parse('file:///home/user/file.txt')));
+  });
+  test('isString', () => {
+    strictEqual(true, isString('hello'));
+  });
+  test('isNumber', () => {
+    strictEqual(true, isNumber(1));
+  });
+  test('isBoolean', () => {
+    strictEqual(true, isBoolean(true));
+  });
+  test('isObject', () => {
+    strictEqual(true, isObject({}));
+  });
+  test('isArray', () => {
+    strictEqual(true, isArray([]));
+  });
+  test('isOptionalString', () => {
+    strictEqual(true, isOptionalString('hello'));
+    strictEqual(true, isOptionalString(undefined));
+  });
+  test('isArrayOfString', () => {
+    strictEqual(true, isArrayOfString(['hello']));
+  });
+  test('arraysEqual', () => {
+    strictEqual(true, arraysEqual(['hello'], ['hello']));
+    strictEqual(false, arraysEqual(['hello'], [null]));
+    strictEqual(false, arraysEqual(['hello'], ['hello', 'world']));
+    strictEqual(false, arraysEqual(['hello'], ['world']));
+  });
+});
+
+suite('helper functions general tests', () => {
+  test('isPositionInString', async () => {
+    const doc = await vscode.workspace.openTextDocument({
+      language: 'text',
+      content: 'hello "world"',
+    });
+    const pos = new vscode.Position(0, 7);
+    strictEqual(true, isPositionInString(doc, pos));
+  });
+});