Support -Float::INFINITY...date ranges

Fixes Ruby Bug 12961
ruby · Oct 18, 2019 · 7f533c2 · 7f533c2
1 parent a2f4b66
commit 7f533c2
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diff --git a/lib/date.rb b/lib/date.rb
@@ -5,6 +5,10 @@
 
 class Date
 
+  def infinite?
+    false
+  end
+
   class Infinity < Numeric # :nodoc:
 
     include Comparable

diff --git a/test/date/test_date.rb b/test/date/test_date.rb
@@ -6,6 +6,19 @@ class DateSub < Date; end
 class DateTimeSub < DateTime; end
 
 class TestDate < Test::Unit::TestCase
+  def test_range_infinite_float
+    today = Date.today
+    r = today...Float::INFINITY
+    assert_equal today, r.begin
+    assert_equal Float::INFINITY, r.end
+    assert_equal true, r.cover?(today+1)
+    assert_equal false, r.cover?(today-1)
+    r = (-Float::INFINITY)...today
+    assert_equal(-Float::INFINITY, r.begin)
+    assert_equal today, r.end
+    assert_equal false, r.cover?(today+1)
+    assert_equal true, r.cover?(today-1)
+  end
 
   def test__const
     assert_nil(Date::MONTHNAMES[0])