make test work for ipy

Author: romanarust

src/compas/files/gltf/data_classes.py

@@ -16,6 +16,9 @@ class MineType(object):
 
 # I changed the name of this so as not to collide with compas.Base
 class BaseGLTFDataClass(object):
+
+    IS_BASE_GLTF_DATA = True  # only needed for ipy in `GLTFContent.check_extensions_texture_recursively`
+
     def __init__(self, extras=None, extensions=None):
         self.extras = extras
         self.extensions = extensions
@@ -140,6 +143,9 @@ def from_data(cls, texture):
 
 
 class TextureInfoData(BaseGLTFDataClass):
+
+    IS_TEXTURE_INFO_DATA = True  # only needed for ipy in `GLTFContent.check_extensions_texture_recursively`
+
     def __init__(self, index, tex_coord=None, extras=None, extensions=None):
         super(TextureInfoData, self).__init__(extras, extensions)
         self.index = index

src/compas/files/gltf/gltf_content.py

@@ -161,9 +161,11 @@ def check_extensions_texture_recursively(item):
             # get the extensions that are in the attributes
             for a in dir(item):
                 if not a.startswith("__") and not callable(getattr(item, a)):
-                    if isinstance(getattr(item, a), TextureInfoData):
+                    # ipy does not like this one: if isinstance(getattr(item, a), TextureInfoData):
+                    if getattr(getattr(item, a), "IS_TEXTURE_INFO_DATA", False):
                         texture_visit_log[getattr(item, a).index] = True
-                    elif isinstance(getattr(item, a), BaseGLTFDataClass):
+                    # ipy does not like this one: elif isinstance(getattr(item, a), BaseGLTFDataClass):
+                    elif getattr(getattr(item, a), "IS_BASE_GLTF_DATA", False):
                         check_extensions_texture_recursively(getattr(item, a))
             if item.extensions is not None:
                 for _, e in item.extensions.items():