add test_kwarg_help

Author: DanielGoldfarb

tests/test_kwarg_help.py

@@ -0,0 +1,26 @@
+import os
+import os.path
+import glob
+import mplfinance        as mpf
+
+print('mpf.__version__ =',mpf.__version__)                 # for the record
+
+
+def test_kwarg_help():
+
+    functions = ['plot', 'make_addplot', 'make_marketcolors', 'make_mpf_style',
+                 'renko_params', 'pnf_params', 'lines', 'scale_width_adjustment',
+                 'update_width_config']
+
+    # just call `kwarg_help()` for each function,
+    #  and make sure there are no exceptions:
+
+    mpf.kwarg_help()
+
+    for func_name in functions:
+        mpf.kwarg_help(func_name)
+
+    # now call with `sort=True` (again, just making sure no exceptions)
+
+    mpf.kwarg_help('plot',sort=True)
+