show error stack if present

Author: Vadim Demedes

lib/reporters/mini.js

@@ -180,7 +180,6 @@ MiniReporter.prototype.finish = function (runStatus) {
 			}
 
 			var title = test.error ? test.title : 'Unhandled Error';
-			var description = extractStack(test.error.stack);
 			var beforeSpacing = index === 0 ? '\n\n' : '\n\n\n\n';
 
 			status += beforeSpacing + '  ' + colors.title(title) + '\n';
@@ -195,7 +194,10 @@ MiniReporter.prototype.finish = function (runStatus) {
 			}
 
 			status += '\n' + indentString(test.error.message, 2) + '\n';
-			status += '\n' + indentString(colors.errorStack(description), 2);
+
+			if (test.error.stack) {
+				status += '\n' + indentString(colors.errorStack(extractStack(test.error.stack)), 2);
+			}
 		}, this);
 	}
 

lib/reporters/verbose.js

@@ -110,7 +110,6 @@ VerboseReporter.prototype.finish = function (runStatus) {
 				return;
 			}
 
-			var stack = extractStack(test.error.stack);
 			var beforeSpacing = index === 0 ? '\n\n' : '\n\n\n\n';
 			output += beforeSpacing + '  ' + colors.title(test.title) + '\n';
 			if (test.error.source) {
@@ -124,7 +123,9 @@ VerboseReporter.prototype.finish = function (runStatus) {
 			}
 
 			output += '\n' + indentString(test.error.message, 2) + '\n';
-			output += '\n' + indentString(colors.errorStack(stack), 2);
+			if (test.error.stack) {
+				output += '\n' + indentString(colors.errorStack(extractStack(test.error.stack)), 2);
+			}
 		}, this);
 	}
 

lib/serialize-error.js

@@ -55,13 +55,15 @@ const stackUtils = new StackUtils();
 module.exports = error => {
 	const err = cleanYamlObject(error, filter);
 
-	const firstStackLine = extractStack(err.stack).split('\n')[0];
-	const source = stackUtils.parseLine(firstStackLine);
-	if (source) {
-		err.source = {
-			file: source.file.trim(),
-			line: source.line
-		};
+	if (err.stack) {
+		const firstStackLine = extractStack(err.stack).split('\n')[0];
+		const source = stackUtils.parseLine(firstStackLine);
+		if (source) {
+			err.source = {
+				file: source.file.trim(),
+				line: source.line
+			};
+		}
 	}
 
 	return err;