add basic test

Author: timhaywood

src/index.test.ts

@@ -0,0 +1,46 @@
+import { parseStyles, styleByIndex, styleBySearch } from './index';
+
+test('correctly parses styles', () => {
+  expect(
+    parseStyles(`This should be *bold*
+and this _should italics_ be`)
+  ).toStrictEqual([
+    { content: 'This should be', line: 0, style: 'regular' },
+    { content: 'bold', line: 0, style: 'bold' },
+    { content: 'and this', line: 1, style: 'regular' },
+    { content: 'should italics', line: 1, style: 'italics' },
+    { content: 'be', line: 1, style: 'regular' },
+  ]);
+});
+
+test('correctly styles by search', () => {
+  expect(
+    styleBySearch(
+      `This should be bold
+and this should italics be`,
+      { boldString: 'bold', italicsString: 'should italics' }
+    )
+  ).toStrictEqual([
+    { content: 'This should be', line: 0, style: 'regular' },
+    { content: 'bold', line: 0, style: 'bold' },
+    { content: 'and this', line: 1, style: 'regular' },
+    { content: 'should italics', line: 1, style: 'italics' },
+    { content: 'be', line: 1, style: 'regular' },
+  ]);
+});
+
+test('correctly styles by index', () => {
+  expect(
+    styleByIndex(
+      `This should be bold
+  and this italics be`,
+      { boldIndexes: [3], italicsIndexes: [6] }
+    )
+  ).toStrictEqual([
+    { content: 'This should be', line: 0, style: 'regular' },
+    { content: 'bold', line: 0, style: 'bold' },
+    { content: 'and this', line: 1, style: 'regular' },
+    { content: 'should italics', line: 1, style: 'italics' },
+    { content: 'be', line: 1, style: 'regular' },
+  ]);
+});