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require File.expand_path('../../spec_helper', __FILE__)
require File.expand_path('../fixtures/ensure', __FILE__)
describe "An ensure block inside a begin block" do
before :each do
ScratchPad.record []
end
it "is executed when an exception is raised in it's corresponding begin block" do
begin
lambda {
begin
ScratchPad << :begin
raise "An exception occurred!"
ensure
ScratchPad << :ensure
end
}.should raise_error(RuntimeError)
ScratchPad.recorded.should == [:begin, :ensure]
end
end
it "is executed when an exception is raised and rescued in it's corresponding begin block" do
begin
begin
ScratchPad << :begin
raise "An exception occurred!"
rescue
ScratchPad << :rescue
ensure
ScratchPad << :ensure
end
ScratchPad.recorded.should == [:begin, :rescue, :ensure]
end
end
it "is executed even when a symbol is thrown in it's corresponding begin block" do
begin
catch(:symbol) do
begin
ScratchPad << :begin
throw(:symbol)
rescue
ScratchPad << :rescue
ensure
ScratchPad << :ensure
end
end
ScratchPad.recorded.should == [:begin, :ensure]
end
end
it "is executed when nothing is raised or thrown in it's corresponding begin block" do
begin
ScratchPad << :begin
rescue
ScratchPad << :rescue
ensure
ScratchPad << :ensure
end
ScratchPad.recorded.should == [:begin, :ensure]
end
it "has no return value" do
begin
:begin
ensure
:ensure
end.should == :begin
end
end
describe "The value of an ensure expression," do
it "in no-exception scenarios, is the value of the last statement of the protected body" do
begin
v = 1
eval('x=1') # to prevent opts from triggering
v
ensure
v = 2
end.should == 1
end
it "when an exception is rescued, is the value of the rescuing block" do
begin
raise 'foo'
rescue
v = 3
ensure
v = 2
end.should == 3
end
end
describe "An ensure block inside a method" do
before :each do
@obj = EnsureSpec::Container.new
end
it "is executed when an exception is raised in the method" do
lambda { @obj.raise_in_method_with_ensure }.should raise_error(RuntimeError)
@obj.executed.should == [:method, :ensure]
end
it "is executed when an exception is raised and rescued in the method" do
@obj.raise_and_rescue_in_method_with_ensure
@obj.executed.should == [:method, :rescue, :ensure]
end
it "is executed even when a symbol is thrown in the method" do
catch(:symbol) { @obj.throw_in_method_with_ensure }
@obj.executed.should == [:method, :ensure]
end
it "has no impact on the method's implicit return value" do
@obj.implicit_return_in_method_with_ensure.should == :method
end
it "has an impact on the method's explicit return value" do
@obj.explicit_return_in_method_with_ensure.should == :ensure
end
end
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