76 lines
2.0 KiB
Ruby
76 lines
2.0 KiB
Ruby
# typed: false
|
|
# frozen_string_literal: true
|
|
|
|
require "utils/popen"
|
|
|
|
describe Utils do
|
|
describe "::popen_read" do
|
|
it "reads the standard output of a given command" do
|
|
expect(subject.popen_read("sh", "-c", "echo success").chomp).to eq("success")
|
|
expect($CHILD_STATUS).to be_a_success
|
|
end
|
|
|
|
it "can be given a block to manually read from the pipe" do
|
|
expect(
|
|
subject.popen_read("sh", "-c", "echo success") do |pipe|
|
|
pipe.read.chomp
|
|
end,
|
|
).to eq("success")
|
|
expect($CHILD_STATUS).to be_a_success
|
|
end
|
|
|
|
it "fails when the command does not exist" do
|
|
expect(subject.popen_read("./nonexistent", err: :out))
|
|
.to eq("brew: command not found: ./nonexistent\n")
|
|
expect($CHILD_STATUS).to be_a_failure
|
|
end
|
|
end
|
|
|
|
describe "::popen_write" do
|
|
let(:foo) { mktmpdir/"foo" }
|
|
|
|
before { foo.write "Foo\n" }
|
|
|
|
it "supports writing to a command's standard input" do
|
|
subject.popen_write("grep", "-q", "success") do |pipe|
|
|
pipe.write "success\n"
|
|
end
|
|
expect($CHILD_STATUS).to be_a_success
|
|
end
|
|
|
|
it "returns the command's standard output before writing" do
|
|
child_stdout = subject.popen_write("cat", foo, "-") do |pipe|
|
|
pipe.write "Bar\n"
|
|
end
|
|
expect($CHILD_STATUS).to be_a_success
|
|
expect(child_stdout).to eq <<~EOS
|
|
Foo
|
|
Bar
|
|
EOS
|
|
end
|
|
|
|
it "returns the command's standard output after writing" do
|
|
child_stdout = subject.popen_write("cat", "-", foo) do |pipe|
|
|
pipe.write "Bar\n"
|
|
end
|
|
expect($CHILD_STATUS).to be_a_success
|
|
expect(child_stdout).to eq <<~EOS
|
|
Bar
|
|
Foo
|
|
EOS
|
|
end
|
|
|
|
it "supports interleaved writing between two reads" do
|
|
child_stdout = subject.popen_write("cat", foo, "-", foo) do |pipe|
|
|
pipe.write "Bar\n"
|
|
end
|
|
expect($CHILD_STATUS).to be_a_success
|
|
expect(child_stdout).to eq <<~EOS
|
|
Foo
|
|
Bar
|
|
Foo
|
|
EOS
|
|
end
|
|
end
|
|
end
|