1 files changed, 42 insertions, 0 deletions
diff --git a/activesupport/test/core_ext/numeric_ext_test.rb b/activesupport/test/core_ext/numeric_ext_test.rb
new file mode 100644
index 0000000000..6057c8f8c3
--- /dev/null
+++ b/activesupport/test/core_ext/numeric_ext_test.rb
@@ -0,0 +1,42 @@
+require 'test/unit'
+require File.dirname(__FILE__) + '/../../lib/core_ext/numeric'
+
+class NumericExtTimeTest < Test::Unit::TestCase
+  def setup
+    @now = Time.now
+    @seconds = {
+      1.minute   => 60,
+      10.minutes => 600,
+      1.hour + 15.minutes => 4500,
+      2.days + 4.hours + 30.minutes => 189000,
+      5.years + 1.month + 1.fortnight => 161481600
+    }
+  end
+
+  def test_time_units
+    @seconds.each do |actual, expected|
+      assert_equal expected, actual
+      assert_equal expected.since(@now),  @now + actual
+      assert_equal expected.until(@now),  @now - actual
+    end
+  end
+end
+
+class NumericExtSizeTest < Test::Unit::TestCase
+
+  def test_unit_in_terms_of_another
+    relationships = {
+        1024.kilobytes =>   1.megabyte,
+      3584.0.kilobytes => 3.5.megabytes,
+      3584.0.megabytes => 3.5.gigabytes,
+      1.kilobyte ** 4  =>   1.terabyte,
+      1024.kilobytes + 2.megabytes =>   3.megabytes,
+                   2.gigabytes / 4 => 512.megabytes,
+      256.megabytes * 20 + 5.gigabytes => 10.gigabytes
+    }
+
+    relationships.each do |left, right|
+      assert_equal right, left
+    end
+  end
+end