1 files changed, 48 insertions, 0 deletions
diff --git a/spec/lib/gitlab/database/partitioning_migration_helpers/partitioned_foreign_key_spec.rb b/spec/lib/gitlab/database/partitioning_migration_helpers/partitioned_foreign_key_spec.rb
new file mode 100644
index 00000000000..77f71676252
--- /dev/null
+++ b/spec/lib/gitlab/database/partitioning_migration_helpers/partitioned_foreign_key_spec.rb
@@ -0,0 +1,48 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+
+describe Gitlab::Database::PartitioningMigrationHelpers::PartitionedForeignKey do
+  let(:foreign_key) do
+    described_class.new(
+      to_table: 'issues',
+      from_table: 'issue_assignees',
+      from_column: 'issue_id',
+      to_column: 'id',
+      cascade_delete: true)
+  end
+
+  describe 'validations' do
+    it 'allows keys that reference valid tables and columns' do
+      expect(foreign_key).to be_valid
+    end
+
+    it 'does not allow keys without a valid to_table' do
+      foreign_key.to_table = 'this_is_not_a_real_table'
+
+      expect(foreign_key).not_to be_valid
+      expect(foreign_key.errors[:to_table].first).to eq('must be a valid table')
+    end
+
+    it 'does not allow keys without a valid from_table' do
+      foreign_key.from_table = 'this_is_not_a_real_table'
+
+      expect(foreign_key).not_to be_valid
+      expect(foreign_key.errors[:from_table].first).to eq('must be a valid table')
+    end
+
+    it 'does not allow keys without a valid to_column' do
+      foreign_key.to_column = 'this_is_not_a_real_fk'
+
+      expect(foreign_key).not_to be_valid
+      expect(foreign_key.errors[:to_column].first).to eq('must be a valid column')
+    end
+
+    it 'does not allow keys without a valid from_column' do
+      foreign_key.from_column = 'this_is_not_a_real_pk'
+
+      expect(foreign_key).not_to be_valid
+      expect(foreign_key.errors[:from_column].first).to eq('must be a valid column')
+    end
+  end
+end