calabash/run_loop — pull request #86 by jmoody (2014-12-02 23:50:29+00:00)
Title: Rspec tests should respect command line DEVELOPER_DIR settings

### Summary

https://travis-ci.org/calabash/run_loop/jobs/42737748

The tests are run in random order. In example below from Travis CI, the DEVELOPER_DIR from a previous tests is interfering with the test simulator/binary compatibility examples.

```
Simulator/Binary Compatibility Check
raises an error if libraries are not compatible
xcrun: error: missing DEVELOPER_DIR path: /foo/bar

targeting i386 simulator with binary that contains only a x86_64 slice (FAILED - 1)
xcrun: error: missing DEVELOPER_DIR path: /foo/bar

target only has arm slices (FAILED - 2)
can launch if library is FAT
xcrun: error: missing DEVELOPER_DIR path: /foo/bar

targeting x86_64 simulator with binary that contains only a i386 slice (FAILED - 3)
xcrun: error: missing DEVELOPER_DIR path: /foo/bar
can launch if libraries are compatible (FAILED - 4)
```

### Acceptance

1. Rspec tests should not clobber DEVELOPER_DIR; it should be changed for the duration of the example and then changed back.