Add a testbase package with no juju-core deps.

downloader/downloader_test.go

 // Copyright 2012, 2013 Canonical Ltd.
 // Licensed under the AGPLv3, see LICENCE file for details.
 
 package downloader_test
 
 import (
         "io/ioutil"
         "os"
         "path/filepath"
         stdtesting "testing"
         "time"
 
         gc "launchpad.net/gocheck"
 
         "launchpad.net/juju-core/downloader"
         "launchpad.net/juju-core/testing"
+        "launchpad.net/juju-core/testing/testbase"
 )
 
 type suite struct {
-        testing.LoggingSuite
+        testbase.LoggingSuite
         testing.HTTPSuite
 }
 
 func (s *suite) SetUpSuite(c *gc.C) {
         s.LoggingSuite.SetUpSuite(c)
         s.HTTPSuite.SetUpSuite(c)
 }
 
 func (s *suite) TearDownSuite(c *gc.C) {
         s.HTTPSuite.TearDownSuite(c)
@@ skipping 55 matching lines @@
 
 func assertFileContents(c *gc.C, f *os.File, expect string) {
         got, err := ioutil.ReadAll(f)
         c.Assert(err, gc.IsNil)
         if !c.Check(string(got), gc.Equals, expect) {
                 info, err := f.Stat()
                 c.Assert(err, gc.IsNil)
                 c.Logf("info %#v", info)
         }
 }