[Refactor] Test: cleaner at logic

lib/test.js

@@ -482,7 +482,7 @@ Test.prototype._assert = function assert(ok, opts) {
 	if (!ok) {
 		var e = new Error('exception');
 		var err = $split(e.stack || '', '\n');
-		var dir = __dirname + path.sep;
+		var tapeDir = __dirname + path.sep;
 
 		for (var i = 0; i < err.length; i++) {
 			/*
@@ -521,17 +521,35 @@ Test.prototype._assert = function assert(ok, opts) {
                     /((?:\/|[a-zA-Z]:\\)[^:\)]+:(\d+)(?::(\d+))?)\)?/
             */
 			var re = /^(?:[^\s]*\s*\bat\s+)(?:(.*)\s+\()?((?:\/|[a-zA-Z]:\\)[^:)]+:(\d+)(?::(\d+))?)\)?$/;
-			var lineWithTokens = $replace($replace(err[i], process.cwd(), '/$CWD'), __dirname, '/$TEST');
+			// first tokenize the PWD, then tokenize tape
+			var lineWithTokens = $replace(
+				$replace(
+					err[i],
+					process.cwd(),
+					path.sep + '$CWD'
+				),
+				tapeDir,
+				path.sep + '$TEST' + path.sep
+			);
 			var m = re.exec(lineWithTokens);
 
 			if (!m) {
 				continue;
 			}
 
 			var callDescription = m[1] || '<anonymous>';
-			var filePath = $replace($replace(m[2], '/$CWD', process.cwd()), '/$TEST', __dirname);
-
-			if ($strSlice(filePath, 0, dir.length) === dir) {
+			// first untokenize tape, and then untokenize the PWD, then strip the line/column
+			var filePath = $replace(
+				$replace(
+					$replace(m[2], path.sep + '$TEST' + path.sep, tapeDir),
+					path.sep + '$CWD',
+					process.cwd()
+				),
+				/:\d+:\d+$/,
+				''
+			);
+
+			if ($strSlice(filePath, 0, tapeDir.length) === tapeDir) {
 				continue;
 			}
 
@@ -542,7 +560,7 @@ Test.prototype._assert = function assert(ok, opts) {
 			res.line = Number(m[3]);
 			if (m[4]) { res.column = Number(m[4]); }
 
-			res.at = callDescription + ' (' + filePath + ')';
+			res.at = callDescription + ' (' + filePath + ':' + res.line + (res.column ? ':' + res.column : '') + ')';
 			break;
 		}
 	}