1 files changed, 23 insertions, 0 deletions
diff --git a/test/-ext-/bignum/test_big2str.rb b/test/-ext-/bignum/test_big2str.rb
new file mode 100644
index 0000000000..3e45232d6c
--- /dev/null
+++ b/test/-ext-/bignum/test_big2str.rb
@@ -0,0 +1,23 @@
+require 'test/unit'
+require "-test-/bignum"
+
+class TestBignum < Test::Unit::TestCase
+  class TestBig2str < Test::Unit::TestCase
+
+    SIZEOF_BDIGITS = Bignum::SIZEOF_BDIGITS
+    BITSPERDIG = Bignum::BITSPERDIG
+    BDIGMAX = (1 << BITSPERDIG) - 1
+
+    def test_big2str_generic
+      x = 10**1000
+      assert_equal("1" + "0" * 1000, x.big2str_generic(10))
+    end
+
+    def test_big2str_poweroftwo
+      e = BITSPERDIG*2
+      x = 0b10**e
+      assert_equal("1" + "0" * e, x.big2str_poweroftwo(2))
+    end
+
+  end
+end