2 files changed, 62 insertions, 0 deletions
diff --git a/test/-ext-/integer/test_integer.rb b/test/-ext-/integer/test_integer.rb
new file mode 100644
index 0000000000..26263211e6
--- /dev/null
+++ b/test/-ext-/integer/test_integer.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: false
+require 'test/unit'
+require '-test-/integer'
+
+class Test_Integer < Test::Unit::TestCase
+  FIXNUM_MIN = RbConfig::LIMITS['FIXNUM_MIN']
+  FIXNUM_MAX = RbConfig::LIMITS['FIXNUM_MAX']
+
+  def test_fixnum_range
+    assert_bignum(FIXNUM_MIN-1)
+    assert_fixnum(FIXNUM_MIN)
+    assert_fixnum(FIXNUM_MAX)
+    assert_bignum(FIXNUM_MAX+1)
+  end
+
+  def test_positive_pow
+    assert_separately(%w[-r-test-/integer], "#{<<~"begin;"}\n#{<<~'end;'}", timeout: 3)
+    begin;
+      assert_equal(1, Bug::Integer.positive_pow(1, 1))
+      assert_equal(0, Bug::Integer.positive_pow(0, 1))
+      assert_equal(3, Bug::Integer.positive_pow(3, 1))
+      assert_equal(-3, Bug::Integer.positive_pow(-3, 1))
+      assert_equal(9, Bug::Integer.positive_pow(-3, 2))
+    end;
+  end
+end
diff --git a/test/-ext-/integer/test_my_integer.rb b/test/-ext-/integer/test_my_integer.rb
new file mode 100644
index 0000000000..0dfa234921
--- /dev/null
+++ b/test/-ext-/integer/test_my_integer.rb
@@ -0,0 +1,36 @@
+# frozen_string_literal: false
+require 'test/unit'
+require "-test-/integer"
+
+class Test_MyInteger < Test::Unit::TestCase
+  def test_my_integer_to_f
+    assert_raise(NotImplementedError) do
+      Bug::Integer::MyInteger.new.to_f
+    end
+
+    int = Class.new(Bug::Integer::MyInteger) do
+      def to_f
+      end
+    end
+
+    assert_nothing_raised do
+      int.new.to_f
+    end
+  end
+
+  def test_my_integer_cmp
+    assert_raise(NotImplementedError) do
+      Bug::Integer::MyInteger.new <=> 0
+    end
+
+    int = Class.new(Bug::Integer::MyInteger) do
+      def <=>(other)
+        0
+      end
+    end
+
+    assert_nothing_raised do
+      int.new <=> 0
+    end
+  end
+end