Updated the download method and the WPF example (#934)

* Updated the download method and the WPF example to force download of UI and to give guidance on how to run example

* Updated the download method and the WPF example to force download of UI and to give guidance on how to run example

Co-authored-by: maxcapodi78 <Shark78>

Author: maxcapodi78

_unittest/test_00_downloads.py

@@ -32,3 +32,4 @@ def test_download_antenna_sherlock(self):
 
     def test_download_wfp(self):
         assert self.examples.download_edb_merge_utility()
+        assert self.examples.download_edb_merge_utility(True)

examples/00-EDB/07_WPF_Merge_Utility.py

@@ -15,8 +15,8 @@
 
 from pyaedt.examples.downloads import download_edb_merge_utility
 
-python_file = download_edb_merge_utility()
-
+python_file = download_edb_merge_utility(force_download=True)
+desktop_version = "2022.1"
 
 ######################################################################
 # Python Script execution
@@ -35,3 +35,7 @@
 #
 # The json file contains default settings that can be used in any other project to automatically
 # load all settings.
+# The following command line can be unchecked and launched from python interpreter.
+
+# from pyaedt.generic.toolkit import launch
+# launch(python_file, specified_version=desktop_version, new_desktop_session=False, autosave=False)

pyaedt/examples/downloads.py

@@ -122,12 +122,17 @@ def download_aedb():
     return _download_file("edb/Galileo.aedb", "edb.def")
 
 
-def download_edb_merge_utility():
+def download_edb_merge_utility(force_download=False):
     """Download an example of WPF Project which allows to merge 2aedb files.
 
     Examples files are downloaded to a persistent cache to avoid
     re-downloading the same file twice.
 
+    Parameters
+    ----------
+    force_download : bool
+        Force to delete cache and download files again.
+
     Returns
     -------
     str
@@ -137,10 +142,14 @@ def download_edb_merge_utility():
     --------
     Download an example result file and return the path of the file
     >>> from pyaedt import examples
-    >>> path = examples.download_edb_mergge_utility()
+    >>> path = examples.download_edb_merge_utility(force_download=True)
     >>> path
-    'C:/Users/user/AppData/local/temp/Galileo.aedb'
+    'C:/Users/user/AppData/local/temp/wpf_edb_merge/merge_wizard.py'
     """
+    if force_download:
+        local_path = os.path.join(EXAMPLES_PATH, "wpf_edb_merge")
+        if os.path.exists(local_path):
+            shutil.rmtree(local_path, ignore_errors=True)
     _download_file("wpf_edb_merge/board.aedb", "edb.def")
     _download_file("wpf_edb_merge/package.aedb", "edb.def")
     _download_file("wpf_edb_merge", "merge_wizard_settings.json")