TEST: unit test for creating *_gui wrapper scripts

tests/test_create_remove_wrapper.py

@@ -11,6 +11,7 @@ import sys
 import os.path as op
 import subprocess as sp
 import textwrap as tw
+import itertools as it
 import os
 import shlex
 import shutil
@@ -64,6 +65,22 @@ def touch(path):
         f.write('.')
 
 
+def get_called_command(filename):
+    """Returns the command that is being called by the given wrapper script.
+    """
+
+    with open(filename, 'rt') as f:
+        line = f.readlines()[1]
+
+    tokens = line.split()
+    cmd    = op.basename(tokens[0])
+
+    if cmd in ('python', 'pythonw'):
+        cmd = tokens[2]
+
+    return cmd
+
+
 def test_env_vars_not_set():
     """Test that wrapper scripts are not created if the
     FSL_CREATE_WRAPPER_SCRIPTS, FSLDIR, or PREFIX environment variables
@@ -219,6 +236,46 @@ def test_create_remove_wrappers():
         assert not op.exists(op.join(wrapperdir, 'test_script2'))
 
 
+def test_create_gui_wrappers():
+    """Tests creation of wrappers for FSL GUI commands, which are called
+    "<Command>_gui" on macOS, and "<Command>" on linux, where "<command>"
+    (note the case) may also exist. Post-link scripts should only pass the
+    "<Command>_gui" variant.
+    """
+
+    # Test outcome differs for different platforms.
+    # Keys are passed to createFSLWrapper, values are
+    # wrappers that should be created
+    if sys.platform == 'darwin':
+        scripts = {'script'     : 'script',
+                   'Script_gui' : 'Script_gui'}
+
+    # linux
+    else:
+        scripts = {'script'     : 'script',
+                   'Script_gui' : 'Script'}
+
+    with temp_fsldir() as (fsldir, wrapperdir):
+        for target in scripts.values():
+            touch(op.join(fsldir, 'bin', target))
+
+        for wrappers in it.permutations(scripts.keys()):
+            args  = ' '.join(wrappers)
+            run(f'{CREATE_WRAPPER} {args}')
+
+            for arg in wrappers:
+                target  = scripts[arg]
+                wrapper = op.join(wrapperdir, target)
+                assert op.exists(wrapper)
+                assert get_called_command(wrapper) == scripts[arg]
+
+            run(f'{REMOVE_WRAPPER} {args}')
+            for arg in wrappers:
+                target  = scripts[arg]
+                wrapper = op.join(wrapperdir, target)
+                assert not op.exists(wrapper)
+
+
 if __name__ == '__main__':
     # base dir can be speecified on command line
     if len(sys.argv) > 1: