5 files changed, 89 insertions, 0 deletions
diff --git a/test/-ext-/load/script.rb b/test/-ext-/load/script.rb
new file mode 100644
index 0000000000..4bc2480587
--- /dev/null
+++ b/test/-ext-/load/script.rb
@@ -0,0 +1,2 @@
+# frozen_string_literal: true
+raise "foo"
diff --git a/test/-ext-/load/test_dot_dot.rb b/test/-ext-/load/test_dot_dot.rb
new file mode 100644
index 0000000000..f087ff62c0
--- /dev/null
+++ b/test/-ext-/load/test_dot_dot.rb
@@ -0,0 +1,11 @@
+# frozen_string_literal: false
+require 'test/unit'
+
+class Test_DotDot < Test::Unit::TestCase
+  def test_load_dot_dot
+    feature = '[ruby-dev:41774]'
+    assert_nothing_raised(LoadError, feature) {
+      require '-test-/load/dot.dot'
+    }
+  end
+end
diff --git a/test/-ext-/load/test_protect.rb b/test/-ext-/load/test_protect.rb
new file mode 100644
index 0000000000..83b179b34c
--- /dev/null
+++ b/test/-ext-/load/test_protect.rb
@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+require 'test/unit'
+require '-test-/load/protect'
+
+class Test_Load_Protect < Test::Unit::TestCase
+  def test_load_protect
+    assert_raise(LoadError) {
+      Bug.load_protect(__dir__+"/nonexistent.rb")
+    }
+    assert_raise_with_message(RuntimeError, "foo") {
+      Bug.load_protect(__dir__+"/script.rb")
+    }
+  end
+end
diff --git a/test/-ext-/load/test_resolve_symbol.rb b/test/-ext-/load/test_resolve_symbol.rb
new file mode 100644
index 0000000000..471d3acebd
--- /dev/null
+++ b/test/-ext-/load/test_resolve_symbol.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+require 'test/unit'
+
+class Test_Load_ResolveSymbol < Test::Unit::TestCase
+  def test_load_resolve_symbol_resolver
+    assert_separately([], "#{<<~"begin;"}\n#{<<~'end;'}")
+    begin;
+      feature = "Feature #20005"
+      assert_raise(LoadError, "resolve_symbol_target is not loaded") {
+        require '-test-/load/resolve_symbol_resolver'
+      }
+      require '-test-/load/resolve_symbol_target'
+      assert_nothing_raised(LoadError, "#{feature} resolver can be loaded") {
+        require '-test-/load/resolve_symbol_resolver'
+      }
+      assert_not_nil ResolveSymbolResolver
+      assert_equal "from target", ResolveSymbolResolver.any_method
+
+      assert_raise(LoadError, "tries to resolve missing feature name, and it should raise LoadError") {
+        ResolveSymbolResolver.try_resolve_fname
+      }
+      assert_raise(LoadError, "tries to resolve missing symbol name, and it should raise LoadError") {
+        ResolveSymbolResolver.try_resolve_sname
+      }
+    end;
+  end
+end
diff --git a/test/-ext-/load/test_stringify_symbols.rb b/test/-ext-/load/test_stringify_symbols.rb
new file mode 100644
index 0000000000..0d9736b591
--- /dev/null
+++ b/test/-ext-/load/test_stringify_symbols.rb
@@ -0,0 +1,35 @@
+# frozen_string_literal: true
+require 'test/unit'
+
+class Test_Load_stringify_symbols < Test::Unit::TestCase
+  def test_load_stringify_symbol_required_extensions
+    require '-test-/load/stringify_symbols'
+    require '-test-/load/stringify_target'
+    r1 = StringifySymbols.stringify_symbol("-test-/load/stringify_target", "stt_any_method")
+    assert_not_nil r1
+    r2 = StringifySymbols.stringify_symbol("-test-/load/stringify_target.so", "stt_any_method")
+    assert_equal r1, r2, "resolved symbols should be equal even with or without .so suffix"
+  end
+
+  def test_load_stringify_symbol_statically_linked
+    require '-test-/load/stringify_symbols'
+    # "complex.so" is actually not a statically linked extension.
+    # But it is registered in $LOADED_FEATURES, so it can be a target of this test.
+    r1 = StringifySymbols.stringify_symbol("complex", "rb_complex_minus")
+    assert_not_nil r1
+    r2 = StringifySymbols.stringify_symbol("complex.so", "rb_complex_minus")
+    assert_equal r1, r2
+  end
+
+  def test_load_stringify_symbol_missing_target
+    require '-test-/load/stringify_symbols'
+    r1 = assert_nothing_raised {
+      StringifySymbols.stringify_symbol("something_missing", "unknown_method")
+    }
+    assert_nil r1
+    r2 = assert_nothing_raised {
+      StringifySymbols.stringify_symbol("complex.so", "unknown_method")
+    }
+    assert_nil r2
+  end
+end