Add more test cases

__tests__/ExpensiMark-HTML-test.js

@@ -26,9 +26,21 @@ test('Test bold within code blocks is skipped', () => {
     expect(parser.replace(testString)).toBe(replacedString);
 });
 
+test('Test special character plus _ ahead asterisk still result in bold', () => {
+    const testString = 'This is a !_*bold*';
+    const replacedString = 'This is a !_<strong>bold</strong>';
+    expect(parser.replace(testString)).toBe(replacedString);
+});
+
+test('Test a word plus _ ahead asterisk not result in bold', () => {
+    const testString = 'This is not a_*bold*';
+    const replacedString = 'This is not a_*bold*';
+    expect(parser.replace(testString)).toBe(replacedString);
+});
+
 test('Test _ ahead asterisk still result in bold', () => {
-    const testString = 'bold\n```\n*not a bold*\n```\nThis is _*bold*';
-    const replacedString = 'bold<br /><pre>*not&#32;a&#32;bold*<br /></pre>This is _<strong>bold</strong>';
+    const testString = 'This is a ~_*bold*';
+    const replacedString = 'This is a ~_<strong>bold</strong>';
     expect(parser.replace(testString)).toBe(replacedString);
 });