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Diffstat (limited to 'spec/rubyspec/core/kernel/system_spec.rb')
-rw-r--r-- | spec/rubyspec/core/kernel/system_spec.rb | 107 |
1 files changed, 107 insertions, 0 deletions
diff --git a/spec/rubyspec/core/kernel/system_spec.rb b/spec/rubyspec/core/kernel/system_spec.rb new file mode 100644 index 0000000000..ccbd43cfde --- /dev/null +++ b/spec/rubyspec/core/kernel/system_spec.rb @@ -0,0 +1,107 @@ +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 + + 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 + + before :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/zsh" + 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 |