1 files changed, 52 insertions, 0 deletions
diff --git a/test/-ext-/arith_seq/test_arith_seq_beg_len_step.rb b/test/-ext-/arith_seq/test_arith_seq_beg_len_step.rb
new file mode 100644
index 0000000000..4320c1f20d
--- /dev/null
+++ b/test/-ext-/arith_seq/test_arith_seq_beg_len_step.rb
@@ -0,0 +1,52 @@
+# frozen_string_literal: false
+require 'test/unit'
+
+class Test_ArithSeq < Test::Unit::TestCase
+  def test_beg_len_step
+    assert_separately([], <<-"end;") #do
+      require '-test-/arith_seq/beg_len_step'
+
+      r, = Enumerator::ArithmeticSequence.__beg_len_step__([1, 2, 3], 0, 0)
+      assert_equal(false, r)
+
+      r, = Enumerator::ArithmeticSequence.__beg_len_step__([1, 2, 3], 1, 0)
+      assert_equal(false, r)
+
+      r, = Enumerator::ArithmeticSequence.__beg_len_step__([1, 2, 3], 3, 0)
+      assert_equal(false, r)
+
+      r, = Enumerator::ArithmeticSequence.__beg_len_step__(1..3, 0, 0)
+      assert_equal(nil, r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__(1..3, 1, 0)
+      assert_equal([true, 1, 0, 1], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__(1..3, 2, 0)
+      assert_equal([true, 1, 1, 1], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__(1..3, 3, 0)
+      assert_equal([true, 1, 2, 1], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__(1..3, 4, 0)
+      assert_equal([true, 1, 3, 1], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__(1..3, 5, 0)
+      assert_equal([true, 1, 3, 1], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__((-10..10).step(2), 24, 0)
+      assert_equal([true, 14, 0, 2], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__((-10..10).step(3), 24, 0)
+      assert_equal([true, 14, 0, 3], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__((-10..10).step(3), 22, 0)
+      assert_equal([true, 12, 0, 3], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__((-10..10).step(-3), 22, 0)
+      assert_equal([true, 10, 3, -3], r)
+
+      r = Enumerator::ArithmeticSequence.__beg_len_step__(1..3, 0, 1)
+      assert_equal([true, 1, 3, 1], r)
+    end;
+  end
+end