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require "utils"
describe Tty do
describe "::strip_ansi" do
it "removes ANSI escape codes from a string" do
expect(subject.strip_ansi("\033\[36;7mhello\033\[0m")).to eq("hello")
end
end
describe "::width" do
it "returns an Integer" do
expect(subject.width).to be_kind_of(Integer)
end
it "cannot be negative" do
expect(subject.width).to be >= 0
end
end
describe "::truncate" do
it "truncates the text to the terminal width, minus 4, to account for '==> '" do
allow(subject).to receive(:width).and_return(15)
expect(subject.truncate("foobar something very long")).to eq("foobar some")
expect(subject.truncate("truncate")).to eq("truncate")
end
it "doesn't truncate the text if the terminal is unsupported, i.e. the width is 0" do
allow(subject).to receive(:width).and_return(0)
expect(subject.truncate("foobar something very long")).to eq("foobar something very long")
end
end
context "when $stdout is not a TTY" do
before(:each) do
allow($stdout).to receive(:tty?).and_return(false)
end
it "returns an empty string for all colors" do
expect(subject.to_s).to eq("")
expect(subject.red.to_s).to eq("")
expect(subject.green.to_s).to eq("")
expect(subject.yellow.to_s).to eq("")
expect(subject.blue.to_s).to eq("")
expect(subject.magenta.to_s).to eq("")
expect(subject.cyan.to_s).to eq("")
expect(subject.default.to_s).to eq("")
end
end
context "when $stdout is a TTY" do
before(:each) do
allow($stdout).to receive(:tty?).and_return(true)
end
it "returns ANSI escape codes for colors" do
expect(subject.to_s).to eq("")
expect(subject.red.to_s).to eq("\033[31m")
expect(subject.green.to_s).to eq("\033[32m")
expect(subject.yellow.to_s).to eq("\033[33m")
expect(subject.blue.to_s).to eq("\033[34m")
expect(subject.magenta.to_s).to eq("\033[35m")
expect(subject.cyan.to_s).to eq("\033[36m")
expect(subject.default.to_s).to eq("\033[39m")
end
it "returns an empty string for all colors when HOMEBREW_NO_COLOR is set" do
ENV["HOMEBREW_NO_COLOR"] = "1"
expect(subject.to_s).to eq("")
expect(subject.red.to_s).to eq("")
expect(subject.green.to_s).to eq("")
expect(subject.yellow.to_s).to eq("")
expect(subject.blue.to_s).to eq("")
expect(subject.magenta.to_s).to eq("")
expect(subject.cyan.to_s).to eq("")
expect(subject.default.to_s).to eq("")
end
end
end
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