fix(assert): Add default name for no test name.

 * Add `DEFAULT_TEST_NAME`.
 * Ensure `res.name` has a value or use `DEFAULT_TEST_NAME`.

index.js

@@ -12,6 +12,8 @@ var regexTester = require('safe-regex-test');
 var isPassing = regexTester(/^(tests|pass)\s+\d+$/);
 var isFailing = regexTester(/^fail\s+\d+$/);
 
+var DEFAULT_TEST_NAME = 'test';
+
 module.exports = function (opts) {
 	var tap = parser();
 	var out = through2();
@@ -58,8 +60,10 @@ module.exports = function (opts) {
 		var ok = res.ok ? 'ok' : 'not ok';
 		var c = res.ok ? 32 : 31;
 		if (!test) {
+			// Whenenver there is no test name, provide a default one.
+			var name = res.name || DEFAULT_TEST_NAME;
 			// mocha produces TAP results this way, whatever
-			var s = trimWidth(trim(res.name));
+			var s = trimWidth(trim(name));
 			push(out, sprintf(
 				'\x1b[1m\x1b[' + c + 'm%s\x1b[0m\n',
 				trimWidth((res.ok ? '✓' : '⨯') + ' ' + s, res.ok)
@@ -68,7 +72,7 @@ module.exports = function (opts) {
 		}
 
 		var fmt = '\r  %s \x1b[1m\x1b[' + c + 'm%d\x1b[0m %s\x1b[K';
-		var str = sprintf(fmt, ok, res.number, trimWidth(res.name, res.ok));
+		var str = sprintf(fmt, ok, res.number, trimWidth(name, res.ok));
 
 		if (!res.ok) {
 			var y = ++test.offset + 1;