1 files changed, 25 insertions, 0 deletions
diff --git a/spec/ruby/core/process/argv0_spec.rb b/spec/ruby/core/process/argv0_spec.rb
new file mode 100644
index 0000000000..f5aba719e9
--- /dev/null
+++ b/spec/ruby/core/process/argv0_spec.rb
@@ -0,0 +1,25 @@
+require_relative '../../spec_helper'
+
+describe "Process.argv0" do
+  it "returns a String" do
+    Process.argv0.should be_kind_of(String)
+  end
+
+  it "is the path given as the main script and the same as __FILE__" do
+    script = "fixtures/argv0.rb"
+
+    Dir.chdir(__dir__) do
+      ruby_exe(script).should == "#{script}\n#{script}\nOK"
+    end
+  end
+
+  ruby_bug "#19597", ""..."3.3" do
+    it "returns a frozen object" do
+      Process.argv0.should.frozen?
+    end
+  end
+
+  it "returns every time the same object" do
+    Process.argv0.should.equal?(Process.argv0)
+  end
+end