Github user HyukjinKwon commented on the pull request:
https://github.com/apache/spark/pull/13165#issuecomment-221576056
@shivaram and @sun-rui I addressed the comment, added a test for this PR
and fixed some tests not working on Windows due to path separator.
This PR also fixes the test failures below.
- **Fixed case 1**
```
5. Failure: sparkJars sparkPackages as comma-separated strings
(@test_context.R#128)
6. Failure: sparkJars sparkPackages as comma-separated strings
(@test_context.R#131)
7. Failure: sparkJars sparkPackages as comma-separated strings
(@test_context.R#134)
```
The cases above were due to a weird behaviour of `normalizePath()`. On
Linux, if the path does not exist, it just prints out the input but it prints
out including the current path on Windows.
```r
# On Linus
path <- normalizePath("aa")
print(path)
[1] "aa"
# On Windows
path <- normalizePath("aa")
print(path)
[1] "C:\\Users\\aa"
```
- **Fixed case 2**
```
8. Failure: sparkJars tag in SparkContext (@test_includeJAR.R#34)
9. Failure: sparkJars tag in SparkContext (@test_includeJAR.R#36)
```
The cases above were due to using of `system2`.
Here is full stdout of my testing,
[output.msg](https://gist.github.com/HyukjinKwon/c72b747a15948bd062a26aba7c42115b)
on Windows.
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