debugger: remove useless clearlines, updated test

* remove useless clearline call at Interface start
* silence after .handleBreak()
* output '\b' if this.stdout is not a tty (debugger)
* add '\b' checks for clearline (test)

lib/_debugger.js

@@ -785,7 +785,6 @@ function Interface(stdin, stdout, args) {
   this.breakpoints = [];
 
   // Run script automatically
-  this.clearline();
   this.pause();
 
   // XXX Need to figure out why we need this delay
@@ -827,6 +826,8 @@ Interface.prototype.clearline = function() {
   if (this.stdout.isTTY) {
     this.stdout.cursorTo(0);
     this.stdout.clearLine(1);
+  } else {
+    this.stdout.write('\b');
   }
 };
 
@@ -876,7 +877,7 @@ Interface.prototype.handleBreak = function(r) {
   // And list source
   this.list(2);
 
-  this.resume();
+  this.resume(true);
 };
 
 

test/simple/test-debugger-repl.js

@@ -45,8 +45,6 @@ var expected = [];
 child.on('line', function(line) {
   assert.ok(expected.length > 0, 'Got unexpected line: ' + line);
 
-  console.log(JSON.stringify(line) + ',');
-
   var expectedLine = expected[0].lines.shift();
   assert.equal(line, expectedLine);
 
@@ -72,45 +70,44 @@ function addTest(input, output) {
 
 // Initial lines
 addTest(null, [
-  "debug> < debugger listening on port 5858",
-  "debug> connecting... ok",
-  "debug> break in [unnamed]:3",
-  "  1 ",
-  "  2 debugger;",
-  "  3 debugger;",
-  "  4 function a(x) {",
-  "  5   var i = 10;"
+  "debug> \b< debugger listening on port 5858",
+  "debug> \bconnecting... ok",
+  "debug> \bbreak in [unnamed]:3",
+  "\b  1 ",
+  "\b  2 debugger;",
+  "\b  3 debugger;",
+  "\b  4 function a(x) {",
+  "\b  5   var i = 10;"
 ]);
 
 // Next
 addTest('n', [
-  "debug> debug> debug> break in [unnamed]:13",
-  " 11   return [\"hello\", \"world\"].join(\" \");",
-  " 12 };",
-  " 13 a();",
-  " 14 a(1);",
-  " 15 b();"
+  "debug> debug> debug> \bbreak in [unnamed]:13",
+  "\b 11   return ['hello', 'world'].join(' ');",
+  "\b 12 };",
+  "\b 13 a();",
+  "\b 14 a(1);",
+  "\b 15 b();"
 ]);
 
 // Continue
 addTest('c', [
- "debug> debug> debug> break in [unnamed]:7",
-  "  5   var i = 10;",
-  "  6   while (--i != 0);",
-  "  7   debugger;",
-  "  8   return i;",
-  "  9 };"
+ "debug> debug> debug> \bbreak in [unnamed]:7",
+  "\b  5   var i = 10;",
+  "\b  6   while (--i != 0);",
+  "\b  7   debugger;",
+  "\b  8   return i;",
+  "\b  9 };"
 ]);
 
-
 // Step out
 addTest('o', [
-  "debug> debug> debug> break in [unnamed]:14",
-  " 12 };",
-  " 13 a();",
-  " 14 a(1);",
-  " 15 b();",
-  " 16 b();"
+  "debug> debug> debug> \bbreak in [unnamed]:14",
+  "\b 12 };",
+  "\b 13 a();",
+  "\b 14 a(1);",
+  "\b 15 b();",
+  "\b 16 b();"
 ]);
 
 
@@ -130,9 +127,13 @@ setTimeout(function() {
 
 process.once('uncaughtException', function(e) {
   quit();
-  throw e;
+  console.error(e.toString());
+  process.exit(1);
 });
 
-process.on('exit', function() {
+process.on('exit', function(code) {
   quit();
+  if (code === 0) {
+    assert.equal(expected.length, 0);
+  }
 });