TEST: make sure entry points exist and are on $PATH

funpack/tests/test_demo.py

@@ -57,18 +57,16 @@ def test_demo():
     assert not nbproc.is_alive()
 
 
-def test_demo_commands():
+def create_funpack_entrypoint(path):
+    with open(path, 'wt') as f:
+        f.write('#!/usr/bin/env bash\n')
+        f.write('{} -m funpack "$@"\n'.format(sys.executable))
+    os.chmod(path, 0o755)
 
-    # Issues with pytest-cov 3.0.0 / coveragepy 6.2
-    # cause coverage to spit out error information
-    # in subprocess-called invocations. Disabling for
-    # the time being.
-    env = os.environ.copy()
-    for k in list(env.keys()):
-        if 'COVERAGE' in k or k.startswith('COV_'):
-            env.pop(k)
 
-    def eval_cmd(cmd, out):
+def test_demo_commands():
+
+    def eval_cmd(cmd, out, env):
 
         # TODO extract all funpack calls, and turn
         #      them into funpack.main function calls.
@@ -79,9 +77,23 @@ def test_demo_commands():
         assert result.returncode              == 0
         assert result.stdout.decode().strip() == out.strip()
 
+    # Issues with pytest-cov 3.0.0 / coveragepy 6.2
+    # cause coverage to spit out error information
+    # in subprocess-called invocations. Disabling for
+    # the time being.
+    env = os.environ.copy()
+    for k in list(env.keys()):
+        if 'COVERAGE' in k or k.startswith('COV_'):
+            env.pop(k)
+
     with tempdir() as td:
         td = op.realpath(td)
         gen_demo_tests(rundir=td)
+        create_funpack_entrypoint(op.join(td, 'funpack'))
+        create_funpack_entrypoint(op.join(td, 'fmrib_unpack'))
+
+        env['PATH'] = op.pathsep.join((td, env['PATH']))
+
         demodir = op.join(op.dirname(__file__), '..', 'scripts', 'demo')
 
         for fname in glob.glob(op.join(demodir, '*.*')):
@@ -96,7 +108,7 @@ def test_demo_commands():
             print(open(cmd).read())
             print()
 
-            eval_cmd(cmd, out)
+            eval_cmd(cmd, out, env)
 
 
 def gen_demo_tests(outdir=None, rundir=None):