1 files changed, 89 insertions, 0 deletions
diff --git a/test/ruby/test_zjit.rb b/test/ruby/test_zjit.rb
index 6095b0b734..2b171b02b1 100644
--- a/test/ruby/test_zjit.rb
+++ b/test/ruby/test_zjit.rb
@@ -31,6 +31,20 @@ class TestZJIT < Test::Unit::TestCase
     }
   end
 
+  def test_putstring
+    assert_compiles '""', %q{
+      def test = "#{""}"
+      test
+    }, insns: [:putstring]
+  end
+
+  def test_putchilldedstring
+    assert_compiles '""', %q{
+      def test = ""
+      test
+    }, insns: [:putchilledstring]
+  end
+
   def test_leave_param
     assert_compiles '5', %q{
       def test(n) = n
@@ -281,6 +295,34 @@ class TestZJIT < Test::Unit::TestCase
     }, insns: [:opt_ge], call_threshold: 2
   end
 
+  def test_opt_hash_freeze
+    assert_compiles '{}', <<~RUBY, insns: [:opt_hash_freeze]
+      def test = {}.freeze
+      test
+    RUBY
+  end
+
+  def test_opt_ary_freeze
+    assert_compiles '[]', <<~RUBY, insns: [:opt_ary_freeze]
+      def test = [].freeze
+      test
+    RUBY
+  end
+
+  def test_opt_str_freeze
+    assert_compiles '""', <<~RUBY, insns: [:opt_str_freeze]
+      def test = "".freeze
+      test
+    RUBY
+  end
+
+  def test_opt_str_uminus
+    assert_compiles '""', <<~RUBY, insns: [:opt_str_uminus]
+      def test = -""
+      test
+    RUBY
+  end
+
   def test_new_array_empty
     assert_compiles '[]', %q{
       def test = []
@@ -636,6 +678,27 @@ class TestZJIT < Test::Unit::TestCase
     }
   end
 
+  def test_uncached_getconstant_path
+    assert_compiles RUBY_COPYRIGHT.dump, %q{
+      def test = RUBY_COPYRIGHT
+      test
+    }, call_threshold: 1, insns: [:opt_getconstant_path]
+  end
+
+  def test_getconstant_path_autoload
+    # A constant-referencing expression can run arbitrary code through Kernel#autoload.
+    Dir.mktmpdir('autoload') do |tmpdir|
+      autoload_path = File.join(tmpdir, 'test_getconstant_path_autoload.rb')
+      File.write(autoload_path, 'X = RUBY_COPYRIGHT')
+
+      assert_compiles RUBY_COPYRIGHT.dump, %Q{
+        Object.autoload(:X, #{File.realpath(autoload_path).inspect})
+        def test = X
+        test
+      }, call_threshold: 1, insns: [:opt_getconstant_path]
+    end
+  end
+
   def test_send_backtrace
     backtrace = [
       "-e:2:in 'Object#jit_frame1'",
@@ -652,6 +715,32 @@ class TestZJIT < Test::Unit::TestCase
     }, call_threshold: 2
   end
 
+  def test_putspecialobject_vm_core_and_cbase
+    assert_compiles '10', %q{
+      def test
+        alias bar test
+        10
+      end
+
+      test
+      bar
+    }, insns: [:putspecialobject]
+  end
+
+  def test_putspecialobject_const_base
+    assert_compiles '1', %q{
+      Foo = 1
+
+      def test = Foo
+
+      # First call: populates the constant cache
+      test
+      # Second call: triggers ZJIT compilation with warm cache
+      # RubyVM::ZJIT.assert_compiles will panic if this fails to compile
+      test
+    }, call_threshold: 2
+  end
+
   # tool/ruby_vm/views/*.erb relies on the zjit instructions a) being contiguous and
   # b) being reliably ordered after all the other instructions.
   def test_instruction_order