Increase unit testing for order API

InvenTree/order/fixtures/order.yaml

@@ -7,6 +7,7 @@
     reference: '0001'
     description: "Ordering some screws"
     supplier: 1
+    status: 10  # Pending
 
 # Ordering some screws from Zerg Corp
 - model: order.purchaseorder
@@ -15,6 +16,39 @@
     reference: '0002'
     description: "Ordering some more screws"
     supplier: 3
+    status: 10  # Pending
+
+- model: order.purchaseorder
+  pk: 3
+  fields:
+    reference: '0003'
+    description: 'Another PO'
+    supplier: 3
+    status: 20  # Placed
+
+- model: order.purchaseorder
+  pk: 4
+  fields:
+    reference: '0004'
+    description: 'Another PO'
+    supplier: 3
+    status: 20  # Placed
+
+- model: order.purchaseorder
+  pk: 5
+  fields:
+    reference: '0005'
+    description: 'Another PO'
+    supplier: 3
+    status: 30  # Complete
+
+- model: order.purchaseorder
+  pk: 6
+  fields:
+    reference: '0006'
+    description: 'Another PO'
+    supplier: 3
+    status: 40  # Cancelled
 
 # Add some line items against PO 0001
 

InvenTree/order/fixtures/sales_order.yaml

@@ -0,0 +1,39 @@
+- model: order.salesorder
+  pk: 1
+  fields:
+    reference: 'ABC123'
+    description: "One sales order, please"
+    customer: 4
+    status: 10  # Pending
+
+- model: order.salesorder
+  pk: 2
+  fields:
+    reference: 'ABC124'
+    description: "One sales order, please"
+    customer: 4
+    status: 10  # Pending
+
+- model: order.salesorder
+  pk: 3
+  fields:
+    reference: 'ABC125'
+    description: "One sales order, please"
+    customer: 4
+    status: 10  # Pending
+
+- model: order.salesorder
+  pk: 4
+  fields:
+    reference: 'ABC126'
+    description: "One sales order, please"
+    customer: 5
+    status: 20  # Shipped
+
+- model: order.salesorder
+  pk: 5
+  fields:
+    reference: 'ABC127'
+    description: "One sales order, please"
+    customer: 5
+    status: 60  # Returned