class UtilsTests extends BaseTest {
	test_stripIndent() {
		this.assertEqual(MDUtils.stripIndent(''), '');
		this.assertEqual(MDUtils.stripIndent('  '), '');
		this.assertEqual(MDUtils.stripIndent('foo'), 'foo');
		this.assertEqual(MDUtils.stripIndent(' foo'), 'foo');
		this.assertEqual(MDUtils.stripIndent('  foo'), 'foo');
		this.assertEqual(MDUtils.stripIndent('   foo'), 'foo');
		this.assertEqual(MDUtils.stripIndent('    foo'), 'foo');
		this.assertEqual(MDUtils.stripIndent('     foo'), ' foo');
		this.assertEqual(MDUtils.stripIndent('\tfoo'), 'foo');
		this.assertEqual(MDUtils.stripIndent('\t\tfoo'), '\tfoo');
		this.assertEqual(MDUtils.stripIndent('\t\tfoo', 2), 'foo');
		this.assertEqual(MDUtils.stripIndent('      foo', 2), 'foo');
	}

	test_countIndents() {
		this.assertEqual(MDUtils.countIndents(''), 0);
		this.assertEqual(MDUtils.countIndents('  '), 1);
		this.assertEqual(MDUtils.countIndents('    '), 1);
		this.assertEqual(MDUtils.countIndents('foo'), 0);
		this.assertEqual(MDUtils.countIndents('foo'), 0);
		this.assertEqual(MDUtils.countIndents(' foo'), 1);
		this.assertEqual(MDUtils.countIndents('  foo'), 1);
		this.assertEqual(MDUtils.countIndents('   foo'), 1);
		this.assertEqual(MDUtils.countIndents('    foo'), 1);
		this.assertEqual(MDUtils.countIndents('     foo'), 2);
		this.assertEqual(MDUtils.countIndents('\tfoo'), 1);
		this.assertEqual(MDUtils.countIndents('\t\tfoo'), 2);

		this.assertEqual(MDUtils.countIndents('', true), 0);
		this.assertEqual(MDUtils.countIndents('  ', true), 0);
		this.assertEqual(MDUtils.countIndents('    ', true), 1);
		this.assertEqual(MDUtils.countIndents('foo', true), 0);
		this.assertEqual(MDUtils.countIndents(' foo', true), 0);
		this.assertEqual(MDUtils.countIndents('  foo', true), 0);
		this.assertEqual(MDUtils.countIndents('   foo', true), 0);
		this.assertEqual(MDUtils.countIndents('    foo', true), 1);
		this.assertEqual(MDUtils.countIndents('     foo', true), 1);
		this.assertEqual(MDUtils.countIndents('\tfoo', true), 1);
		this.assertEqual(MDUtils.countIndents('\t\tfoo', true), 2);
	}

	test_tokenizeLabel() {
		// Escapes are preserved
		this.assertEqual(MDToken.tokenizeLabel('[foo] bar'), [ '[foo]', 'foo' ]);
		this.assertEqual(MDToken.tokenizeLabel('[foo\\[] bar'), [ '[foo\\[]', 'foo\\[' ]);
		this.assertEqual(MDToken.tokenizeLabel('[foo\\]] bar'), [ '[foo\\]]', 'foo\\]' ]);
		this.assertEqual(MDToken.tokenizeLabel('[foo[]] bar'), [ '[foo[]]', 'foo[]' ]);
		this.assertEqual(MDToken.tokenizeLabel('[foo\\(] bar'), [ '[foo\\(]', 'foo\\(' ]);
		this.assertEqual(MDToken.tokenizeLabel('[foo\\)] bar'), [ '[foo\\)]', 'foo\\)' ]);
		this.assertEqual(MDToken.tokenizeLabel('[foo()] bar'), [ '[foo()]', 'foo()' ]);

		this.assertEqual(MDToken.tokenizeLabel('foo bar'), null);
		this.assertEqual(MDToken.tokenizeLabel('[foo\\] bar'), null);
		this.assertEqual(MDToken.tokenizeLabel('[foo bar'), null);
		this.assertEqual(MDToken.tokenizeLabel('[foo[] bar'), null);
	}

	test_tokenizeURL() {
		this.assertEqual(MDToken.tokenizeURL('(page.html) foo'), [ '(page.html)', 'page.html', null ]);
		this.assertEqual(MDToken.tokenizeURL('(page.html "link title") foo'), [ '(page.html "link title")', 'page.html', 'link title' ]);
		this.assertEqual(MDToken.tokenizeURL('(https://example.com/path/page.html?query=foo&bar=baz#fragment) foo'), [ '(https://example.com/path/page.html?query=foo&bar=baz#fragment)', 'https://example.com/path/page.html?query=foo&bar=baz#fragment', null ]);

		this.assertEqual(MDToken.tokenizeURL('page.html foo'), null);
		this.assertEqual(MDToken.tokenizeURL('(page.html foo'), null);
		this.assertEqual(MDToken.tokenizeURL('page.html) foo'), null);
		this.assertEqual(MDToken.tokenizeURL('(page.html "title) foo'), null);
		this.assertEqual(MDToken.tokenizeURL('(page .html) foo'), null);
		this.assertEqual(MDToken.tokenizeURL('(user@example.com) foo'), null);
		this.assertEqual(MDToken.tokenizeURL('(user@example.com "title") foo'), null);
	}

	test_tokenizeEmail() {
		this.assertEqual(MDToken.tokenizeEmail('(user@example.com)'), [ '(user@example.com)', 'user@example.com', null ]);
		this.assertEqual(MDToken.tokenizeEmail('(user@example.com "link title")'), [ '(user@example.com "link title")', 'user@example.com', 'link title' ]);

		this.assertEqual(MDToken.tokenizeEmail('(https://example.com) foo'), null);
		this.assertEqual(MDToken.tokenizeEmail('(https://example.com "link title") foo'), null);
		this.assertEqual(MDToken.tokenizeEmail('(user@example.com "link title) foo'), null);
		this.assertEqual(MDToken.tokenizeEmail('(user@example.com foo'), null);
		this.assertEqual(MDToken.tokenizeEmail('user@example.com) foo'), null);
	}
}