1 files changed, 22 insertions, 7 deletions
diff --git a/spec/ruby/core/kernel/system_spec.rb b/spec/ruby/core/kernel/system_spec.rb
index 696e6ae3d7..9bc03924dd 100644
--- a/spec/ruby/core/kernel/system_spec.rb
+++ b/spec/ruby/core/kernel/system_spec.rb
@@ -25,14 +25,12 @@ describe :kernel_system, shared: true do
     $?.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
-      -> { @object.system(ruby_cmd('exit 1'), exception: true) }.should raise_error(RuntimeError)
-    end
+  it "raises RuntimeError when `exception: true` is given and the command exits with a non-zero exit status" do
+    -> { @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
-      -> { @object.system('feature_14386', exception: true) }.should raise_error(Errno::ENOENT)
-    end
+  it "raises Errno::ENOENT when `exception: true` is given and the specified command does not exist" do
+    -> { @object.system('feature_14386', exception: true) }.should raise_error(Errno::ENOENT)
   end
 
   it "returns nil when command execution fails" do
@@ -66,6 +64,23 @@ describe :kernel_system, shared: true do
     end
   end
 
+  platform_is_not :windows do
+    before :each do
+      require 'tmpdir'
+      @shell_command = File.join(Dir.mktmpdir, "noshebang.cmd")
+      File.write(@shell_command, %[echo "$PATH"\n], perm: 0o700)
+    end
+
+    after :each do
+      File.unlink(@shell_command)
+      Dir.rmdir(File.dirname(@shell_command))
+    end
+
+    it "executes with `sh` if the command is executable but not binary and there is no shebang" do
+      -> { @object.system(@shell_command) }.should output_to_fd(ENV['PATH'] + "\n")
+    end
+  end
+
   before :each do
     ENV['TEST_SH_EXPANSION'] = 'foo'
     @shell_var = '$TEST_SH_EXPANSION'