1 files changed, 33 insertions, 5 deletions
diff --git a/test/t/kernel.rb b/test/t/kernel.rb
index 927166283..aff2dd461 100644
--- a/test/t/kernel.rb
+++ b/test/t/kernel.rb
@@ -221,6 +221,14 @@ assert('Kernel#dup', '15.3.1.3.9') do
   assert_false c.respond_to?(:test)
 end
 
+assert('Kernel#dup class') do
+  assert_nothing_raised do
+    Array.dup.new(200)
+    Range.dup.new(2, 3)
+    String.dup.new("a"*50)
+  end
+end
+
 # Kernel#eval is provided by mruby-eval mrbgem '15.3.1.3.12'
 
 assert('Kernel#extend', '15.3.1.3.13') do
@@ -249,6 +257,13 @@ assert('Kernel#extend works on toplevel', '15.3.1.3.13') do
   assert_true respond_to?(:test_method)
 end
 
+assert('Kernel#freeze') do
+  obj = Object.new
+  assert_equal obj, obj.freeze
+  assert_equal 0, 0.freeze
+  assert_equal :a, :a.freeze
+end
+
 assert('Kernel#global_variables', '15.3.1.3.14') do
   assert_equal Array, global_variables.class
 end
@@ -512,6 +527,21 @@ assert('Kernel#to_s', '15.3.1.3.46') do
   assert_equal to_s.class, String
 end
 
+assert('Kernel#to_s on primitives') do
+  begin
+    Fixnum.alias_method :to_s_, :to_s
+    Fixnum.remove_method :to_s
+
+    assert_nothing_raised do
+      # segfaults if mrb_cptr is used
+      1.to_s
+    end
+  ensure
+    Fixnum.alias_method :to_s, :to_s_
+    Fixnum.remove_method :to_s_
+  end
+end
+
 assert('Kernel.local_variables', '15.3.1.2.7') do
   a, b = 0, 1
   a += b
@@ -519,11 +549,10 @@ assert('Kernel.local_variables', '15.3.1.2.7') do
   vars = Kernel.local_variables.sort
   assert_equal [:a, :b, :vars], vars
 
-  Proc.new {
+  assert_equal [:a, :b, :c, :vars], Proc.new { |a, b|
     c = 2
-    vars = Kernel.local_variables.sort
-    assert_equal [:a, :b, :c, :vars], vars
-  }.call
+    Kernel.local_variables.sort
+  }.call(-1, -2)
 end
 
 assert('Kernel#!=') do
@@ -592,4 +621,3 @@ assert('stack extend') do
 
   assert_equal 6, recurse(0, 5)
 end
-