Swift: Add another test case.

Author: geoffw0

swift/ql/test/query-tests/Security/CWE-020/MissingRegexAnchor.expected

@@ -46,8 +46,9 @@
 | UnanchoredUrlRegex.swift:71:46:71:46 | https?://good.com | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
 | UnanchoredUrlRegex.swift:78:39:78:39 | https?://good.com | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
 | UnanchoredUrlRegex.swift:79:39:79:39 | https?://good.com:8080 | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
-| UnanchoredUrlRegex.swift:95:39:95:39 | https?:\\/\\/good.com\\/([0-9]+) | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
-| UnanchoredUrlRegex.swift:101:39:101:39 | example\\.com\|whatever | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
+| UnanchoredUrlRegex.swift:91:3:91:3 | https?://good.com | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
+| UnanchoredUrlRegex.swift:101:39:101:39 | https?:\\/\\/good.com\\/([0-9]+) | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
+| UnanchoredUrlRegex.swift:107:39:107:39 | example\\.com\|whatever | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |
 | test.swift:56:16:56:16 | ^http://example.com | This hostname pattern may match any domain name, as it is missing a '$' or '/' at the end. |
 | test.swift:59:16:59:16 | ^http://test\\.example.com | This hostname pattern may match any domain name, as it is missing a '$' or '/' at the end. |
 | test.swift:69:16:69:16 | ^(.+\\.(?:example-a\|example-b)\\.com)/ | When this is used as a regular expression on a URL, it may match anywhere, and arbitrary hosts may come before or after it. |

swift/ql/test/query-tests/Security/CWE-020/UnanchoredUrlRegex.swift

@@ -86,6 +86,12 @@ func tests(url: String, secure: Bool) throws {
 	for trustedUrlRegex in trustedUrlRegexs {
 		if let _ = try NSRegularExpression(pattern: trustedUrlRegex).firstMatch(in: input, range: inputRange) { }
 	}
+
+	let trustedUrlRegexs2 = [
+		"https?://good.com", // BAD (missing anchor), referenced below
+	]
+	if let _ = try NSRegularExpression(pattern: trustedUrlRegexs2[0]).firstMatch(in: input, range: inputRange) { }
+
 	let notUsedUrlRegexs = [
 		"https?://good.com" // OK (not referenced)
 	]