test suite, but order-dependent

test/sequel/plugin_test.rb

@@ -0,0 +1,77 @@
+require "test_helper"
+
+describe 'ThroughAssociations#associate' do
+
+  it 'should not conflict with :dataset_associations' do
+
+    # Create two models
+    uhg = Sequel::Model :user_has_groups
+    users = Sequel::Model :users
+
+    # Add plugins in an order that would conflict if #associate was not prepended
+    users.plugin :cyclical_through_associations
+    users.plugin :dataset_associations
+
+    # Add an association that exists
+    refute_nil users.one_to_many :user_has_groups, class: uhg
+
+    # Add an association that can not be resolved yet
+    assert_nil users.many_to_many :groups, through: :user_has_groups
+
+  end
+
+  it 'should raise if creating an invalid assocation using :through_associations' do
+
+    # Create two models
+    uhg = Sequel::Model :user_has_groups
+    users = Sequel::Model :users
+
+    # Add plugins in an order that would conflict if #associate was not prepended
+    users.plugin :through_associations
+
+    # Add an association that exists
+    refute_nil users.one_to_many :user_has_groups, class: uhg
+
+    # Add one that does not exist
+    assert_raises Sequel::Plugins::ThroughAssociations::MissingAssociation do
+      users.many_to_many :groups, through: :user_has_groups
+    end
+
+  end
+
+  it 'should queue if creating an invalid association using :cyclical_through_associations' do
+
+    # Create three models
+    uhg = Sequel::Model :user_has_groups
+    users = Sequel::Model :users
+    groups = Sequel::Model :groups
+
+    users.plugin :cyclical_through_associations
+
+    # Add an association that exists
+    refute_nil users.one_to_many :user_has_groups, class: uhg
+
+    # Add an association that is currently invalid
+    assert_nil users.one_to_many :groups, through: :user_has_groups
+
+    # Attempting to resolve the groups association should currently fail
+    assert_raises Sequel::Plugins::ThroughAssociations::MissingAssociation do
+      users.solve_cyclical_associations!
+    end
+    assert_nil users.association_reflection :groups
+
+    # Add the missing association
+    refute_nil uhg.many_to_one :user, class: users
+    refute_nil uhg.many_to_one :group, class: groups
+
+    puts uhg.association_reflection(:group).inspect
+
+    # Attempt to resovle again
+    users.solve_cyclical_associations!
+
+    # The assoication should now exist
+    refute_nil users.association_reflection :groups
+
+  end
+
+end