public MainWindowTests()
{
craftingMaterial = new CraftingMaterial {
Name = "test-crafting-material-1", SourceType = SourceType.Mining, Location = "location-1"
};
craftingMaterials.Add(craftingMaterial as CraftingMaterial);
craftingItems.Add(BuildCraftingItem(TestCraftingItemName));
initialDataService.GetCraftingItems().Returns(craftingItems);
initialDataService.GetCraftingMaterials().Returns(craftingMaterials);
}