64 lines
1.4 KiB
Ruby
64 lines
1.4 KiB
Ruby
require_relative '../../spec_helper'
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require_relative 'fixtures/classes'
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require_relative 'shared/sprintf'
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describe "Kernel#printf" do
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it "is a private method" do
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Kernel.should have_private_instance_method(:printf)
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end
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end
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describe "Kernel.printf" do
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before :each do
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@stdout = $stdout
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@name = tmp("kernel_puts.txt")
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$stdout = new_io @name
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end
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after :each do
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$stdout.close
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$stdout = @stdout
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rm_r @name
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end
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it "writes to stdout when a string is the first argument" do
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$stdout.should_receive(:write).with("string")
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Kernel.printf("%s", "string")
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end
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it "calls write on the first argument when it is not a string" do
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object = mock('io')
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object.should_receive(:write).with("string")
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Kernel.printf(object, "%s", "string")
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end
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end
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describe "Kernel.printf" do
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describe "formatting" do
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before :each do
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require "stringio"
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end
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context "io is specified" do
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it_behaves_like :kernel_sprintf, -> format, *args {
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io = StringIO.new
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Kernel.printf(io, format, *args)
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io.string
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}
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end
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context "io is not specified" do
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it_behaves_like :kernel_sprintf, -> format, *args {
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stdout = $stdout
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begin
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$stdout = io = StringIO.new
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Kernel.printf(format, *args)
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io.string
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ensure
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$stdout = stdout
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end
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}
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end
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end
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end
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