Added tests for SendMaterialJob and refactored SendMaterialJob for

better testability. This is part of a larger project to create tests
for the UM3NetworkPrinting plugin in preparation for printing from the
cloud

plugins/UM3NetworkPrinting/src/Models.py

@@ -0,0 +1,87 @@
+# Copyright (c) 2018 Ultimaker B.V.
+# Cura is released under the terms of the LGPLv3 or higher.
+from typing import Optional
+
+
+class BaseModel:
+    def __init__(self, **kwargs):
+        self.__dict__.update(kwargs)
+
+    def __eq__(self, other):
+        return self.__dict__ == other.__dict__ if type(self) == type(other) else False
+
+
+##  Represents an item in the cluster API response for installed materials.
+class ClusterMaterial(BaseModel):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.version = int(self.version)
+        self.density = float(self.density)
+
+    guid: None  # type: Optional[str]
+
+    material: None  # type: Optional[str]
+
+    brand: None  # type: Optional[str]
+
+    version = None  # type: Optional[int]
+
+    color: None  # type: Optional[str]
+
+    density: None  # type: Optional[float]
+
+
+class LocalMaterialProperties(BaseModel):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.density = float(self.density)
+        self.diameter = float(self.diameter)
+        self.weight = float(self.weight)
+
+    density: None  # type: Optional[float]
+
+    diameter: None  # type: Optional[float]
+
+    weight: None  # type: Optional[int]
+
+
+class LocalMaterial(BaseModel):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.properties = LocalMaterialProperties(**self.properties)
+        self.approximate_diameter = float(self.approximate_diameter)
+        self.version = int(self.version)
+
+    GUID: None  # type: Optional[str]
+
+    id: None  # type: Optional[str]
+
+    type: None  # type: Optional[str]
+
+    status: None  # type: Optional[str]
+
+    base_file: None  # type: Optional[str]
+
+    setting_version: None  # type: Optional[str]
+
+    version = None  # type: Optional[int]
+
+    name: None  # type: Optional[str]
+
+    brand: None  # type: Optional[str]
+
+    material: None  # type: Optional[str]
+
+    color_name: None  # type: Optional[str]
+
+    description: None  # type: Optional[str]
+
+    adhesion_info: None  # type: Optional[str]
+
+    approximate_diameter: None  # type: Optional[float]
+
+    properties: None  # type: LocalMaterialProperties
+
+    definition: None  # type: Optional[str]
+
+    compatible: None  # type: Optional[bool]