Added source map support

Close #330
Close #329

lib/stack.js

@@ -1,3 +1,4 @@
+var sourceMapSupport = require('source-map-support')
 var StackUtils = require('stack-utils')
 var path = require('path')
 var tapDir = path.resolve(__dirname, '..')
@@ -14,10 +15,12 @@ var skip = process.cwd() !== tapDir ||
   ]
 : []
 
+sourceMapSupport.install({environment:'node'})
 // Ignore tap if it's a dependency, or anything
 // in this lib folder.
 module.exports = new StackUtils({
-  internals: StackUtils.nodeInternals().concat(skip)
+  internals: StackUtils.nodeInternals().concat(skip),
+  wrapCallSite: sourceMapSupport.wrapCallSite
 })
 
 function resc(str) {

package.json

@@ -32,6 +32,7 @@
     "own-or-env": "^1.0.0",
     "readable-stream": "^2.0.2",
     "signal-exit": "^3.0.0",
+    "source-map-support": "^0.4.3",
     "stack-utils": "^1.0.0",
     "tap-mocha-reporter": "^3.0.1",
     "tap-parser": "^5.3.1",

test/test/source-map-fail--bail--buffer.tap

@@ -0,0 +1,15 @@
+TAP version 13
+not ok 1 - gp ___/# time=[0-9.]+(ms)?/~~~ {
+    1..1
+    not ok 1 - parent ___/# time=[0-9.]+(ms)?/~~~ {
+        1..1
+        not ok 1 - fail
+          ---
+          {"at":{"column":7,"file":"test/test/source-map-fail.coffee","line":7},"source":"t.fail 'fail'\n"}
+          ...
+
+        Bail out! # fail
+    }
+}
+Bail out! # fail
+

test/test/source-map-fail--bail.tap

@@ -0,0 +1,13 @@
+TAP version 13
+# Subtest: gp
+    1..1
+    # Subtest: parent
+        1..1
+        not ok 1 - fail
+          ---
+          {"at":{"column":7,"file":"test/test/source-map-fail.coffee","line":7},"source":"t.fail 'fail'\n"}
+          ...
+
+        Bail out! # fail
+Bail out! # fail
+

test/test/source-map-fail--buffer.tap

@@ -0,0 +1,20 @@
+TAP version 13
+not ok 1 - gp ___/# time=[0-9.]+(ms)?/~~~ {
+    1..1
+    not ok 1 - parent ___/# time=[0-9.]+(ms)?/~~~ {
+        1..1
+        not ok 1 - fail
+          ---
+          {"at":{"column":7,"file":"test/test/source-map-fail.coffee","line":7},"source":"t.fail 'fail'\n"}
+          ...
+
+        # failed 1 test
+    }
+
+    # failed 1 test
+}
+
+1..1
+# failed 1 test
+___/# time=[0-9.]+(ms)?/~~~
+

test/test/source-map-fail-bail.tap

@@ -0,0 +1,12 @@
+TAP version 13
+# Subtest: gp
+    1..1
+    # Subtest: parent
+        1..1
+        not ok 1 - fail
+          ---
+          {"at":{"column":7,"file":"test/test/source-map-fail.coffee","line":7},"source":"t.fail 'fail'\n"}
+          ...
+        Bail out! # fail
+Bail out! # fail
+

test/test/source-map-fail.coffee

@@ -0,0 +1,7 @@
+t = require '../..'
+
+t.test 'gp', (t) ->
+  t.plan 1
+  t.test 'parent', (t) ->
+    t.plan 1
+    t.fail 'fail'

test/test/source-map-fail.tap

@@ -0,0 +1,20 @@
+TAP version 13
+# Subtest: gp
+    1..1
+    # Subtest: parent
+        1..1
+        not ok 1 - fail
+          ---
+          {"at":{"column":7,"file":"test/test/source-map-fail.coffee","line":7},"source":"t.fail 'fail'\n"}
+          ...
+
+        # failed 1 test
+    not ok 1 - parent ___/# time=[0-9.]+(ms)?/~~~
+
+    # failed 1 test
+not ok 1 - gp ___/# time=[0-9.]+(ms)?/~~~
+
+1..1
+# failed 1 test
+___/# time=[0-9.]+(ms)?/~~~
+