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