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require_relative '../spec_helper'
describe "The BEGIN keyword" do
before :each do
ScratchPad.record []
end
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
-> { eval "1.times { BEGIN { 1 } }" }.should raise_error(SyntaxError)
end
it "uses top-level for self" do
eval("BEGIN { ScratchPad << self.to_s }", TOPLEVEL_BINDING)
ScratchPad.recorded.should == ['main']
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
it "returns the top-level script's filename for __FILE__" do
ruby_exe(fixture(__FILE__, "begin_file.rb")).chomp.should =~ /begin_file\.rb$/
end
end
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