Unable to use library directory on Windows

[jgfoster]

On one of my student's Windows machine we find the following:

Bundled gems are installed into `./vendor/bundle`
                           .                  __  ___
                   _, ,_  _| , . * ._   _    /  `  |
                  (_| [ `(_] (_| | [ ) (_)   \__. _|_   v1.3.0

 

Host OS...                                                               windows
Located arduino-cli binary...                     C:\Users\calvo/arduino-cli.exe
Found libraries directory...          C:\Users\calvo\Documents\Arduino/libraries
Environment variable CUSTOM_INIT_SCRIPT...                                    ''
Environment variable USE_SUBDIR...                                            ''
Installing library under test...                                               ✗
This may indicate a problem with your configuration; halting here
Failures: 1
========== Last backend command (if relevant):
There is already a library 'Adafruit BusIO' in the library directory (C:\Users\calvo\Documents\Arduino/libraries/Adafruit_BusIO).  It may need to be removed manually.

Here is the directory on Windows:

$ ls -al C:/Users/calvo/Documents/Arduino/libraries
total 37
drwxr-xr-x 1 calvo 197609  0 Feb  2 13:40 .
drwxr-xr-x 1 calvo 197609  0 Feb  2 13:36 ..
drwxr-xr-x 1 calvo 197609  0 Feb  2 16:08 Adafruit_BusIO
drwxr-xr-x 1 calvo 197609  0 Feb  2 13:19 Adafruit_MAX31865
drwxr-xr-x 1 calvo 197609  0 Jan 24 20:51 Ethernet
drwxr-xr-x 1 calvo 197609  0 Nov 26 17:07 LiquidCrystal
-rw-r--r-- 1 calvo 197609 87 Oct 11 17:01 readme.txt
drwxr-xr-x 1 calvo 197609  0 Jan 24 16:41 RTClib
drwxr-xr-x 1 calvo 197609  0 Jan 28 17:15 TankControllerLib
drwxr-xr-x 1 calvo 197609  0 Oct 11 17:02 USBHost

On my macOS machine we find the following:

                           .                  __  ___
                   _, ,_  _| , . * ._   _    /  `  | 
                  (_| [ `(_] (_| | [ ) (_)   \__. _|_   v1.3.0

Host OS...                                                                   osx
Located arduino-cli binary...                         /Users/jfoster/arduino-cli
Found libraries directory...          /Users/jfoster/Documents/Arduino/libraries
Environment variable CUSTOM_INIT_SCRIPT...                                    ''
Environment variable USE_SUBDIR...                                            ''
Installing library under test...                                               ✓
WARNING... Installed library named 'Adafruit BusIO' has directory name 'Adafruit_BusIO'
Library installed at... /Users/jfoster/Documents/Arduino/libraries/Adafruit_BusIO

================================================================================
Beginning the next phase of testing...                              Unit testing
The set of compilers (1) isn't empty...                                        ✓
Checking g++ version... 
    Configured with: --prefix=/Library/Developer/CommandLineTools/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk/usr/include/c++/4.2.1
    Apple clang version 12.0.0 (clang-1200.0.32.29)
    Target: x86_64-apple-darwin19.6.0
    Thread model: posix
    InstalledDir: /Library/Developer/CommandLineTools/usr/bin
...Checking g++ version                                                        ✓
libasan availability for g++...                                             true
Library conforms to Arduino library specification...                         1.5
Wildcard architecture in library.properties, using configured platforms... 
    mega2560
...Wildcard architecture in library.properties, using configured platforms      

Unit testing test.cpp with g++ for mega2560... 

Here is the directory on macOS:

jfoster@ljs Adafruit_BusIO % ll /Users/jfoster/Documents/Arduino/libraries
total 24
drwxr-xr-x@ 12 jfoster  staff   384 Feb  2 16:12 ./
drwxr-xr-x@  4 jfoster  staff   128 Jan 12 10:32 ../
-rw-r--r--@  1 jfoster  staff  6148 Feb  2 16:12 .DS_Store
drwxr-xr-x  19 jfoster  staff   608 Feb  2 16:19 Adafruit_BusIO/
drwxr-xr-x@ 22 jfoster  staff   704 Feb  2 12:41 Adafruit_MAX31865/
drwxr-xr-x  18 jfoster  staff   576 Feb  2 13:00 Blink/
drwxr-xr-x   8 jfoster  staff   256 Jan 12 10:13 Ethernet/
drwxr-xr-x  16 jfoster  staff   512 Dec 19 14:48 LiquidCrystal/
drwxr-xr-x  10 jfoster  staff   320 Jan 12 10:13 RTClib/
drwxr-xr-x@ 31 jfoster  staff   992 Jan 18 08:24 TankControllerLib/
drwxr-xr-x  10 jfoster  staff   320 Jan 12 10:13 TinyWireM/
-rw-r--r--   1 jfoster  staff    87 Dec 19 14:50 readme.txt
jfoster@ljs Adafruit_BusIO % 

So, on Windows it says that the library must be removed (an error), while on macOS it says that the library exists (a warning). When we move the working directory out of C:\Users\calvo\Documents\Arduino/libraries then we no longer get that error. Instead we get the following:

Library conforms to Arduino library specification...                         1.0
No tests directory at... C:\Users\calvo\Documents\Arduino/libraries/Adafruit_BusIO/test
Environment variable EXPECT_UNITTESTS is...                          (NilClass)
Skipping unit tests...
  In case that's an error, displaying contents of base directory:

Interestingly, we are running the same version of Arduino-cli (0.13.0), but his environment thinks that the library conforms to specification 1.0 while mine thinks that the library conforms to specification 1.5.

[ianfixes]

I should add this to the build output in the future, but what is your working directory?

I'm wondering if there's a bug in the logic of path comparison -- note the mix of forward and backward slashes in C:\Users\calvo\Documents\Arduino/libraries.

[jgfoster]

Yes, the working directory started in C:\Users\calvo\Documents\Arduino/libraries. When we moved out then it could not find the tests.

[ianfixes]

The working directory needs to be the library under test itself, what's the name of that library?

[jgfoster]

This is for 'Adafruit BusIO'. On my macOS we see the following:

WARNING... Installed library named 'Adafruit BusIO' has directory name 'Adafruit_BusIO'
Library installed at... /Users/jfoster/Documents/Arduino/libraries/Adafruit_BusIO

[ianfixes]

OK, thanks. If you can confirm that you're running the command from C:\Users\calvo\Documents\Arduino/libraries/Adafruit_BusIO then it's a sure sign that the problem is in the pathname logic. I'll see what unit tests I can write for that

[jgfoster]

Yes, that is where we ran the command ./scripts/buildAndRun.sh.

[ianfixes]

😳 Well here's a problem I just fixed 83401aa

[jgfoster]

Yes, the Windows workflow should probably run in Windows and not Linux!

[ianfixes]

I can't think of an easy way to unit test this, but I've added 1c53896 in #296 which may avoid the problem by properly ingesting windows paths (the backslashes are the problem). Are you still in a position to reproduce this error?

[jgfoster]

This was a couple months ago and we moved this student from Windows to a campus cloud Linux IDE environment, so it would be a bit of work to try to test it manually. I'm content with the changes making some improvements and revisiting the issue if we reproduce it.