Make Active Model test suite similar to Active Record

1 files changed, 84 insertions, 0 deletions

diff --git a/activemodel/test/cases/state_machine/state_transition_test.rb b/activemodel/test/cases/state_machine/state_transition_test.rb
new file mode 100644
index 0000000000..17f9d88be7
--- /dev/null
+++ b/activemodel/test/cases/state_machine/state_transition_test.rb
@@ -0,0 +1,84 @@
+require 'cases/helper'
+
+class StateTransitionTest < ActiveModel::TestCase
+  test 'should set from, to, and opts attr readers' do
+    opts = {:from => 'foo', :to => 'bar', :guard => 'g'}
+    st = ActiveModel::StateMachine::StateTransition.new(opts)
+
+    assert_equal opts[:from], st.from
+    assert_equal opts[:to],   st.to
+    assert_equal opts,        st.options
+  end
+
+  test 'should pass equality check if from and to are the same' do
+    opts = {:from => 'foo', :to => 'bar', :guard => 'g'}
+    st = ActiveModel::StateMachine::StateTransition.new(opts)
+
+    obj = stub
+    obj.stubs(:from).returns(opts[:from])
+    obj.stubs(:to).returns(opts[:to])
+
+    assert_equal st, obj
+  end
+
+  test 'should fail equality check if from are not the same' do
+    opts = {:from => 'foo', :to => 'bar', :guard => 'g'}
+    st = ActiveModel::StateMachine::StateTransition.new(opts)
+
+    obj = stub
+    obj.stubs(:from).returns('blah')
+    obj.stubs(:to).returns(opts[:to])
+
+    assert_not_equal st, obj
+  end
+
+  test 'should fail equality check if to are not the same' do
+    opts = {:from => 'foo', :to => 'bar', :guard => 'g'}
+    st = ActiveModel::StateMachine::StateTransition.new(opts)
+
+    obj = stub
+    obj.stubs(:from).returns(opts[:from])
+    obj.stubs(:to).returns('blah')
+
+    assert_not_equal st, obj
+  end
+end
+
+class StateTransitionGuardCheckTest < ActiveModel::TestCase
+  test 'should return true of there is no guard' do
+    opts = {:from => 'foo', :to => 'bar'}
+      st = ActiveModel::StateMachine::StateTransition.new(opts)
+
+    assert st.perform(nil)
+  end
+
+  test 'should call the method on the object if guard is a symbol' do
+    opts = {:from => 'foo', :to => 'bar', :guard => :test_guard}
+    st = ActiveModel::StateMachine::StateTransition.new(opts)
+  
+    obj = stub
+    obj.expects(:test_guard)
+    
+    st.perform(obj)
+  end
+  
+  test 'should call the method on the object if guard is a string' do
+    opts = {:from => 'foo', :to => 'bar', :guard => 'test_guard'}
+    st = ActiveModel::StateMachine::StateTransition.new(opts)
+  
+    obj = stub
+    obj.expects(:test_guard)
+    
+    st.perform(obj)
+  end
+  
+  test 'should call the proc passing the object if the guard is a proc' do
+    opts = {:from => 'foo', :to => 'bar', :guard => Proc.new {|o| o.test_guard}}
+    st = ActiveModel::StateMachine::StateTransition.new(opts)
+  
+    obj = stub
+    obj.expects(:test_guard)
+  
+    st.perform(obj)
+  end
+end