Get SwiftUI previews working with debug data

Shared/Navigation/ContentView.swift

@@ -18,7 +18,9 @@ struct ContentView: View {
 
 struct ContentView_Previews: PreviewProvider {
     static var previews: some View {
-        ContentView()
-            .environmentObject(WriteFreelyModel())
+        let model = WriteFreelyModel()
+        model.collections = CollectionListModel(with: [userCollection1, userCollection2, userCollection3])
+        return ContentView()
+            .environmentObject(model)
     }
 }

Shared/Navigation/SidebarView.swift

@@ -8,6 +8,9 @@ struct SidebarView: View {
 
 struct SidebarView_Previews: PreviewProvider {
     static var previews: some View {
-        SidebarView()
+        let model = WriteFreelyModel()
+        model.collections = CollectionListModel(with: [userCollection1, userCollection2, userCollection3])
+        return SidebarView()
+            .environmentObject(model)
     }
 }

Shared/PostCollection/CollectionListView.swift

@@ -20,6 +20,9 @@ struct CollectionListView: View {
 
 struct CollectionSidebar_Previews: PreviewProvider {
     static var previews: some View {
-        CollectionListView()
+        let model = WriteFreelyModel()
+        model.collections = CollectionListModel(with: [userCollection1, userCollection2, userCollection3])
+        return CollectionListView()
+            .environmentObject(model)
     }
 }