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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe :kernel_system, shared: true do
it "executes the specified command in a subprocess" do
lambda { @object.system("echo a") }.should output_to_fd("a\n")
$?.should be_an_instance_of Process::Status
$?.success?.should == true
end
it "returns true when the command exits with a zero exit status" do
@object.system(ruby_cmd('exit 0')).should == true
$?.should be_an_instance_of Process::Status
$?.success?.should == true
$?.exitstatus.should == 0
end
it "returns false when the command exits with a non-zero exit status" do
@object.system(ruby_cmd('exit 1')).should == false
$?.should be_an_instance_of Process::Status
$?.success?.should == false
$?.exitstatus.should == 1
end
ruby_version_is "2.6" do
it "raises RuntimeError when `exception: true` is given and the command exits with a non-zero exit status" do
lambda { @object.system(ruby_cmd('exit 1'), exception: true) }.should raise_error(RuntimeError)
end
it "raises Errno::ENOENT when `exception: true` is given and the specified command does not exist" do
lambda { @object.system('feature_14386', exception: true) }.should raise_error(Errno::ENOENT)
end
end
it "returns nil when command execution fails" do
@object.system("sad").should be_nil
$?.should be_an_instance_of Process::Status
$?.pid.should be_kind_of(Integer)
$?.exitstatus.should == 127
end
it "does not write to stderr when command execution fails" do
lambda { @object.system("sad") }.should output_to_fd("", STDERR)
end
platform_is_not :windows do
before :each do
@shell = ENV['SHELL']
end
after :each do
ENV['SHELL'] = @shell
end
it "executes with `sh` if the command contains shell characters" do
lambda { @object.system("echo $0") }.should output_to_fd("sh\n")
end
it "ignores SHELL env var and always uses `sh`" do
ENV['SHELL'] = "/bin/fakeshell"
lambda { @object.system("echo $0") }.should output_to_fd("sh\n")
end
end
before :each do
ENV['TEST_SH_EXPANSION'] = 'foo'
@shell_var = '$TEST_SH_EXPANSION'
platform_is :windows do
@shell_var = '%TEST_SH_EXPANSION%'
end
end
after :each do
ENV.delete('TEST_SH_EXPANSION')
end
it "expands shell variables when given a single string argument" do
lambda { @object.system("echo #{@shell_var}") }.should output_to_fd("foo\n")
end
platform_is_not :windows do
it "does not expand shell variables when given multiples arguments" do
lambda { @object.system("echo", @shell_var) }.should output_to_fd("#{@shell_var}\n")
end
end
platform_is :windows do
it "does expand shell variables when given multiples arguments" do
# See https://bugs.ruby-lang.org/issues/12231
lambda { @object.system("echo", @shell_var) }.should output_to_fd("foo\n")
end
end
platform_is :windows do
it "runs commands starting with any number of @ using shell" do
`#{ruby_cmd("p system 'does_not_exist'")} 2>NUL`.chomp.should == "nil"
@object.system('@does_not_exist 2>NUL').should == false
@object.system("@@@#{ruby_cmd('exit 0')}").should == true
end
end
end
describe "Kernel#system" do
it "is a private method" do
Kernel.should have_private_instance_method(:system)
end
it_behaves_like :kernel_system, :system, KernelSpecs::Method.new
end
describe "Kernel.system" do
it_behaves_like :kernel_system, :system, Kernel
end
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