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require_relative "spec_helper"
describe "Sequel::Plugins::Dirty" do
before do
@db = Sequel.mock(:fetch=>{:initial=>'i'.dup, :initial_changed=>'ic'.dup}, :numrows=>1)
@c = Class.new(Sequel::Model(@db[:c]))
@c.plugin :dirty
@c.columns :initial, :initial_changed, :missing, :missing_changed
end
dirty_plugin_specs = shared_description do
it "initial_value should be the current value if value has not changed" do
@o.initial_value(:initial).must_equal 'i'
@o.initial_value(:missing).must_be_nil
end
it "initial_value should be the intial value if value has changed" do
@o.initial_value(:initial_changed).must_equal 'ic'
@o.initial_value(:missing_changed).must_be_nil
end
it "initial_value should handle case where initial value is reassigned later" do
@o.initial_changed = 'ic'
@o.initial_value(:initial_changed).must_equal 'ic'
@o.missing_changed = nil
@o.initial_value(:missing_changed).must_be_nil
end
it "changed_columns should handle case where initial value is reassigned later" do
@o.changed_columns.must_equal [:initial_changed, :missing_changed]
@o.initial_changed = 'ic'
@o.changed_columns.must_equal [:missing_changed]
@o.missing_changed = nil
@o.changed_columns.must_equal [:missing_changed]
end
it "column_change should give initial and current values if there has been a change made" do
@o.column_change(:initial_changed).must_equal ['ic', 'ic2']
@o.column_change(:missing_changed).must_equal [nil, 'mc2']
end
it "column_change should be nil if no change has been made" do
@o.column_change(:initial).must_be_nil
@o.column_change(:missing).must_be_nil
end
it "column_changed? should return whether the column has changed" do
@o.column_changed?(:initial).must_equal false
@o.column_changed?(:initial_changed).must_equal true
@o.column_changed?(:missing).must_equal false
@o.column_changed?(:missing_changed).must_equal true
end
it "column_changed? should handle case where initial value is reassigned later" do
@o.initial_changed = 'ic'
@o.column_changed?(:initial_changed).must_equal false
@o.missing_changed = nil
@o.column_changed?(:missing_changed).must_equal false
end
it "changed_columns should handle case where initial value is reassigned later" do
@o.changed_columns.must_equal [:initial_changed, :missing_changed]
@o.initial_changed = 'ic'
@o.changed_columns.must_equal [:missing_changed]
@o.missing_changed = nil
@o.changed_columns.must_equal [:missing_changed]
end
it "column_changes should give initial and current values" do
@o.column_changes.must_equal(:initial_changed=>['ic', 'ic2'], :missing_changed=>[nil, 'mc2'])
end
it "reset_column should reset the column to its initial value" do
@o.reset_column(:initial)
@o.initial.must_equal 'i'
@o.reset_column(:initial_changed)
@o.initial_changed.must_equal 'ic'
@o.reset_column(:missing)
@o.missing.must_be_nil
@o.reset_column(:missing_changed)
@o.missing_changed.must_be_nil
end
it "reset_column should remove missing values from the values" do
@o.reset_column(:missing)
@o.values.has_key?(:missing).must_equal false
@o.reset_column(:missing_changed)
@o.values.has_key?(:missing_changed).must_equal false
end
it "refresh should clear the cached initial values" do
@o.refresh
@o.column_changes.must_equal({})
end
it "will_change_column should be used to signal in-place modification to column" do
@o.will_change_column(:initial)
@o.initial << 'b'
@o.column_change(:initial).must_equal ['i', 'ib']
@o.will_change_column(:initial_changed)
@o.initial_changed << 'b'
@o.column_change(:initial_changed).must_equal ['ic', 'ic2b']
@o.will_change_column(:missing)
@o.values[:missing] = 'b'
@o.column_change(:missing).must_equal [nil, 'b']
@o.will_change_column(:missing_changed)
@o.missing_changed << 'b'
@o.column_change(:missing_changed).must_equal [nil, 'mc2b']
end
it "will_change_column should different types of existing objects" do
[nil, true, false, Class.new{undef_method :clone}.new, Class.new{def clone; raise TypeError; end}.new].each do |v|
o = @c.new(:initial=>v)
o.will_change_column(:initial)
o.initial = 'a'
o.column_change(:initial).must_equal [v, 'a']
end
end
it "should work when freezing objects" do
@o.freeze
@o.initial_value(:initial).must_equal 'i'
proc{@o.initial = 'b'}.must_raise
end
it "should have #dup duplicate structures" do
was_new = @o.new?
@o.update(:missing=>'m2')
@o.dup.initial_values.must_equal @o.initial_values
@o.dup.initial_values.wont_be_same_as(@o.initial_values)
@o.dup.instance_variable_get(:@missing_initial_values).must_equal @o.instance_variable_get(:@missing_initial_values)
@o.dup.instance_variable_get(:@missing_initial_values).wont_be_same_as(@o.instance_variable_get(:@missing_initial_values))
if was_new
@o.previous_changes.must_be_nil
@o.dup.previous_changes.must_be_nil
else
@o.dup.previous_changes.must_equal @o.previous_changes
end
@o.dup.previous_changes.wont_be_same_as(@o.previous_changes) if @o.previous_changes
end
end
describe "with new instance" do
before do
@o = @c.new(:initial=>'i'.dup, :initial_changed=>'ic'.dup)
@o.initial_changed = 'ic2'.dup
@o.missing_changed = 'mc2'.dup
end
include dirty_plugin_specs
it "save should clear the cached initial values" do
@o.save
@o.column_changes.must_equal({})
end
it "save_changes should clear the cached initial values" do
@c.dataset = @c.dataset.with_extend do
def supports_insert_select?; true end
def insert_select(*) {:id=>1} end
end
@o.save
@o.column_changes.must_equal({})
end
end
describe "with existing instance" do
before do
@o = @c[1]
@o.initial_changed = 'ic2'.dup
@o.missing_changed = 'mc2'.dup
end
include dirty_plugin_specs
it "previous_changes should be the previous changes after saving" do
@o.save
@o.previous_changes.must_equal(:initial_changed=>['ic', 'ic2'], :missing_changed=>[nil, 'mc2'])
end
it "should work when freezing objects after saving" do
@o.initial = 'a'
@o.save
@o.freeze
@o.previous_changes[:initial].must_equal ['i', 'a']
proc{@o.initial = 'b'}.must_raise
end
end
end
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