Add model tests

test/lib/code_corps/model/github_repo_test.exs

@@ -25,6 +25,21 @@ defmodule CodeCorps.GithubRepoTest do
     end
   end
 
+  describe "update_changeset/2" do
+    test "when project added" do
+      attrs = @valid_attrs |> Map.put(:project_id, 1)
+      changeset = GithubRepo.update_changeset(%GithubRepo{}, attrs)
+      assert changeset.valid?
+    end
+
+    test "when project removed" do
+      attrs = @valid_attrs |> Map.put(:project_id, nil)
+      changeset = GithubRepo.update_changeset(%GithubRepo{sync_state: "synced"}, attrs)
+      assert changeset.valid?
+      assert changeset.changes[:sync_state] == "unsynced"
+    end
+  end
+
   describe "update_sync_changeset/2" do
     test "with valid attributes" do
       GithubRepo.sync_states |> Enum.each(fn state ->