Update to ruby/mspec@0091e8a

spec/mspec/.rspec

@@ -0,0 +1 @@
+--color

spec/mspec/lib/mspec/helpers/ruby_exe.rb

@@ -15,8 +15,10 @@ require 'mspec/helpers/tmp'
 #
 #   `#{RUBY_EXE} 'path/to/some/file.rb'`
 #
-# The ruby_exe helper also accepts an options hash with three
+# The ruby_exe helper also accepts an options hash with four
-# keys: :options, :args and :env. For example:
+# keys: :options, :args :env and :exception.
+#
+# For example:
 #
 #   ruby_exe('file.rb', :options => "-w",
 #                       :args => "arg1 arg2",
@@ -28,6 +30,9 @@ require 'mspec/helpers/tmp'
 #
 # with access to ENV["FOO"] with value "bar".
 #
+# When `exception: false` and Ruby command fails then exception will not be
+# raised.
+#
 # If +nil+ is passed for the first argument, the command line
 # will be built only from the options hash.
 #
@@ -52,6 +57,8 @@ require 'mspec/helpers/tmp'
 # (with -T on the command line or in the config with set :flags)
 # will be appended to RUBY_EXE so that the interpreter
 # is always called with those flags.
+#
+# Failure of a Ruby command leads to raising exception by default.
 
 def ruby_exe_options(option)
   case option
@@ -128,9 +135,19 @@ def ruby_exe(code = :not_given, opts = {})
     code = tmpfile
   end
 
+  expected_exit_status = opts.fetch(:exit_status, 0)
+
   begin
     platform_is_not :opal do
-      `#{ruby_cmd(code, opts)}`
+      command = ruby_cmd(code, opts)
+      output = `#{command}`
+
+      last_status = Process.last_status
+      if last_status.exitstatus != expected_exit_status
+        raise "Expected exit status is #{expected_exit_status.inspect} but actual is #{last_status.exitstatus.inspect} for command ruby_exe(#{command.inspect})"
+      end
+
+      output
     end
   ensure
     saved_env.each { |key, value| ENV[key] = value }

spec/mspec/spec/helpers/ruby_exe_spec.rb

@@ -146,6 +146,18 @@ RSpec.describe Object, "#ruby_exe" do
 
     @script = RubyExeSpecs.new
     allow(@script).to receive(:`)
+
+    status_successful = double(Process::Status,  exitstatus: 0)
+    allow(Process).to receive(:last_status).and_return(status_successful)
+  end
+
+  it "returns command STDOUT when given command" do
+    code = "code"
+    options = {}
+    output = "output"
+    allow(@script).to receive(:`).and_return(output)
+
+    expect(@script.ruby_exe(code, options)).to eq output
   end
 
   it "returns an Array containing the interpreter executable and flags when given no arguments" do
@@ -160,6 +172,30 @@ RSpec.describe Object, "#ruby_exe" do
     @script.ruby_exe(code, options)
   end
 
+  it "raises exception when command exit status is not successful" do
+    code = "code"
+    options = {}
+
+    status_failed = double(Process::Status, exitstatus: 4)
+    allow(Process).to receive(:last_status).and_return(status_failed)
+
+    expect {
+      @script.ruby_exe(code, options)
+    }.to raise_error(%r{Expected exit status is 0 but actual is 4 for command ruby_exe\(.+\)})
+  end
+
+  it "shows in the exception message if exitstatus is nil (e.g., signal)" do
+    code = "code"
+    options = {}
+
+    status_failed = double(Process::Status, exitstatus: nil)
+    allow(Process).to receive(:last_status).and_return(status_failed)
+
+    expect {
+      @script.ruby_exe(code, options)
+    }.to raise_error(%r{Expected exit status is 0 but actual is nil for command ruby_exe\(.+\)})
+  end
+
   describe "with :dir option" do
     it "is deprecated" do
       expect {
@@ -197,4 +233,24 @@ RSpec.describe Object, "#ruby_exe" do
       end.to raise_error(Exception)
     end
   end
+
+  describe "with :exit_status option" do
+    before do
+      status_failed = double(Process::Status, exitstatus: 4)
+      allow(Process).to receive(:last_status).and_return(status_failed)
+    end
+
+    it "raises exception when command ends with not expected status" do
+      expect {
+        @script.ruby_exe("path", exit_status: 1)
+      }.to raise_error(%r{Expected exit status is 1 but actual is 4 for command ruby_exe\(.+\)})
+    end
+
+    it "does not raise exception when command ends with expected status" do
+      output = "output"
+      allow(@script).to receive(:`).and_return(output)
+
+      expect(@script.ruby_exe("path", exit_status: 4)).to eq output
+    end
+  end
 end