1 files changed, 30 insertions, 0 deletions
diff --git a/test/-ext-/bignum/test_str2big.rb b/test/-ext-/bignum/test_str2big.rb
new file mode 100644
index 0000000000..ac55c78082
--- /dev/null
+++ b/test/-ext-/bignum/test_str2big.rb
@@ -0,0 +1,30 @@
+require 'test/unit'
+require "-test-/bignum"
+
+class TestBignum < Test::Unit::TestCase
+  class TestStr2big < Test::Unit::TestCase
+
+    SIZEOF_BDIGITS = Bignum::SIZEOF_BDIGITS
+    BITSPERDIG = Bignum::BITSPERDIG
+    BDIGMAX = (1 << BITSPERDIG) - 1
+
+    def test_str2big_poweroftwo
+      s = "1" + "0" * 1000
+      n = 16 ** 1000
+      assert_equal(n, s.str2big_poweroftwo(16, true))
+    end
+
+    def test_str2big_normal
+      s = "1" + "0" * 1000
+      n = 10 ** 1000
+      assert_equal(n, s.str2big_normal(10, true))
+    end
+
+    def test_str2big_karatsuba
+      s = "1" + "0" * 1000
+      n = 10 ** 1000
+      assert_equal(n, s.str2big_karatsuba(10, true))
+    end
+
+  end
+end