New feature to conveniently add a default material in a blank project when none exists.

src/blenderbim/test/bim/feature/material.feature

@@ -1,6 +1,11 @@
 @material
 Feature: Material
 
+Scenario: Add default material
+    Given an empty IFC project
+    When I press "bim.add_default_material"
+    Then the material "Default" exists
+
 Scenario: Unlink object
     Given an empty IFC project
     And I add a cube

src/blenderbim/test/core/test_material.py

@@ -24,3 +24,11 @@ class TestUnlinkMaterial:
     def test_run(self, material):
         material.unlink("obj").should_be_called()
         subject.unlink_material(material, obj="obj")
+
+
+class TestAddDefaultMaterial:
+    def test_run(self, ifc, material):
+        material.add_default_material_object().should_be_called().will_return("obj")
+        ifc.run("material.add_material", name="Default").should_be_called().will_return("material")
+        material.link("material", "obj").should_be_called()
+        assert subject.add_default_material(ifc, material) == "obj"

src/blenderbim/test/tool/test_material.py

@@ -24,6 +24,18 @@ from test.bim.bootstrap import NewFile
 from blenderbim.tool.material import Material as subject
 
 
+class TestImplementsTool(NewFile):
+    def test_run(self):
+        assert isinstance(subject(), blenderbim.core.tool.Material)
+
+
+class TestAddDefaultMaterialObject(NewFile):
+    def test_run(self):
+        material = subject.add_default_material_object()
+        assert isinstance(material, bpy.types.Material)
+        assert material.name == "Default"
+
+
 class TestLink(NewFile):
     def test_run(self):
         obj = bpy.data.materials.new("Material")