1 files changed, 21 insertions, 0 deletions
diff --git a/spec/ruby/command_line/dash_x_spec.rb b/spec/ruby/command_line/dash_x_spec.rb
new file mode 100644
index 0000000000..a5306b4f75
--- /dev/null
+++ b/spec/ruby/command_line/dash_x_spec.rb
@@ -0,0 +1,21 @@
+describe "The -x command line option" do
+  it "runs code after the first /\#!.*ruby.*/-ish line in target file" do
+    embedded_ruby = fixture __FILE__, "bin/embedded_ruby.txt"
+    result = ruby_exe(embedded_ruby, options: '-x')
+    result.should == "success\n"
+  end
+
+  it "fails when /\#!.*ruby.*/-ish line in target file is not found" do
+    bad_embedded_ruby = fixture __FILE__, "bin/bad_embedded_ruby.txt"
+    result = ruby_exe(bad_embedded_ruby, options: '-x', args: '2>&1')
+    result.should include "no Ruby script found in input"
+  end
+
+  it "behaves as -x was set when non-ruby shebang is encountered on first line" do
+    embedded_ruby = fixture __FILE__, "bin/hybrid_launcher.sh"
+    result = ruby_exe(embedded_ruby)
+    result.should == "success\n"
+  end
+
+  it "needs to be reviewed for spec completeness"
+end