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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Kernel#printf" do
it "is a private method" do
Kernel.should have_private_instance_method(:printf)
end
end
describe "Kernel.printf" do
before :each do
@stdout = $stdout
@name = tmp("kernel_puts.txt")
$stdout = new_io @name
end
after :each do
$stdout.close
$stdout = @stdout
rm_r @name
end
it "writes to stdout when a string is the first argument" do
$stdout.should_receive(:write).with("string")
Kernel.printf("%s", "string")
end
it "calls write on the first argument when it is not a string" do
object = mock('io')
object.should_receive(:write).with("string")
Kernel.printf(object, "%s", "string")
end
end
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