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require File.expand_path('../../spec_helper', __FILE__)
describe "The BEGIN keyword" do
before :each do
ScratchPad.record []
end
ruby_version_is "".."1.9" do
it "runs in a new isolated scope" do
lambda do
eval "BEGIN { var_in_begin = 'foo' }; var_in_begin"
end.should raise_error NameError
end
it "does not access variables outside the eval scope" do
lambda do
outside_var = 'foo'
eval "BEGIN { outside_var }"
end.should raise_error NameError
end
end
ruby_version_is "1.9" do
it "runs in a shared scope" do
eval("BEGIN { var_in_begin = 'foo' }; var_in_begin").should == "foo"
end
it "accesses variables outside the eval scope" do
outside_var = 'foo'
eval("BEGIN { var_in_begin = outside_var }; var_in_begin").should == "foo"
end
it "must appear in a top-level context" do
lambda { eval "1.times { BEGIN { 1 } }" }.should raise_error(SyntaxError)
end
end
it "runs first in a given code unit" do
eval "ScratchPad << 'foo'; BEGIN { ScratchPad << 'bar' }"
ScratchPad.recorded.should == ['bar', 'foo']
end
it "runs multiple begins in FIFO order" do
eval "BEGIN { ScratchPad << 'foo' }; BEGIN { ScratchPad << 'bar' }"
ScratchPad.recorded.should == ['foo', 'bar']
end
end
|
