test: fix test-find-python on v0.10.x buildbot.

Work around a v0.10.x CI issue where path.resolve() on UNIX systems
prefixes Windows paths with the current working directory.

v0.12 and up are free of this issue because they use
path.win32.resolve() which does the right thing.

PR-URL: #1172
Reviewed-By: João Reis <reis@janeasystems.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

lib/configure.js

@@ -375,6 +375,7 @@ PythonFinder.prototype = {
   env: process.env,
   execFile: cp.execFile,
   log: log,
+  resolve: path.win32 && path.win32.resolve || path.resolve,
   stat: fs.stat,
   which: which,
   win: win,
@@ -499,8 +500,7 @@ PythonFinder.prototype = {
     if (rootDir[rootDir.length - 1] !== '\\') {
       rootDir += '\\'
     }
-    var resolve = path.win32 && path.win32.resolve || path.resolve
-    var pythonPath = resolve(rootDir, 'Python27', 'python.exe')
+    var pythonPath = this.resolve(rootDir, 'Python27', 'python.exe')
     this.log.verbose('ensuring that file exists:', pythonPath)
     this.stat(pythonPath, function (err, stat) {
       if (err) {

test/test-find-python.js

@@ -1,6 +1,7 @@
 'use strict'
 
 var test = require('tape')
+var path = require('path')
 var configure = require('../lib/configure')
 var execFile = require('child_process').execFile
 var PythonFinder = configure.test.PythonFinder
@@ -34,10 +35,19 @@ function poison(object, property) {
   Object.defineProperty(object, property, descriptor)
 }
 
+// Work around a v0.10.x CI issue where path.resolve() on UNIX systems prefixes
+// Windows paths with the current working directory.  v0.12 and up are free of
+// this issue because they use path.win32.resolve() which does the right thing.
+var resolve = path.win32 && path.win32.resolve || function() {
+  function rstrip(s) { return s.replace(/\\+$/, '') }
+  return [].slice.call(arguments).map(rstrip).join('\\')
+}
+
 function TestPythonFinder() { PythonFinder.apply(this, arguments) }
 TestPythonFinder.prototype = Object.create(PythonFinder.prototype)
 poison(TestPythonFinder.prototype, 'env')
 poison(TestPythonFinder.prototype, 'execFile')
+poison(TestPythonFinder.prototype, 'resolve')
 poison(TestPythonFinder.prototype, 'stat')
 poison(TestPythonFinder.prototype, 'which')
 poison(TestPythonFinder.prototype, 'win')
@@ -287,6 +297,7 @@ test('find python - no python, no python launcher, good guess', function (t) {
     t.strictEqual(program, 'py.exe')
     cb(new Error('not found'))
   }
+  f.resolve = resolve
   f.stat = function(path, cb) {
     t.ok(re.test(path))
     cb(null, {})
@@ -313,6 +324,7 @@ test('find python - no python, no python launcher, bad guess', function (t) {
     t.strictEqual(program, 'py.exe')
     cb(new Error('not found'))
   }
+  f.resolve = resolve
   f.stat = function(path, cb) {
     t.ok(/Z:[\\\/]Python27[\\\/]python.exe/.test(path))
     var err = new Error('not found')