Handle negative numbers in NumberToHumanSizeConverter

actionview/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Fix the `number_to_human_size` view helper to correctly work with negative numbers.
+
+    *Earlopain*
+
 *   Automatically discard the implicit locals injected by collection rendering for template that can't accept them
 
     When rendering a collection, two implicit variables are injected, which breaks templates with strict locals.

activesupport/CHANGELOG.md

@@ -1,3 +1,7 @@
+*   Fix `#to_fs(:human_size)` to correctly work with negative numbers.
+
+    *Earlopain*
+
 *   Fix `BroadcastLogger#dup` so that it duplicates the logger's `broadcasts`.
 
     *Andrew Novoselac*

activesupport/lib/active_support/number_helper/number_to_human_size_converter.rb

@@ -43,13 +43,13 @@ module ActiveSupport
 
         def exponent
           max = STORAGE_UNITS.size - 1
-          exp = (Math.log(number) / Math.log(base)).to_i
+          exp = (Math.log(number.abs) / Math.log(base)).to_i
           exp = max if exp > max # avoid overflow for the highest unit
           exp
         end
 
         def smaller_than_base?
-          number.to_i < base
+          number.to_i.abs < base
         end
 
         def base

activesupport/test/core_ext/numeric_ext_test.rb

@@ -310,6 +310,16 @@ class NumericExtFormattingTest < ActiveSupport::TestCase
     assert_equal "10 Bytes",  10.to_fs(:human_size)
   end
 
+  def test_to_fs__human_size_with_negative_number
+    assert_equal "-1 Bytes",   -1.to_fs(:human_size)
+    assert_equal "-3 Bytes",   -3.14159265.to_fs(:human_size)
+    assert_equal "-123 Bytes", -123.to_fs(:human_size)
+    assert_equal "-12.1 KB",   -12345.to_fs(:human_size)
+    assert_equal "-444 KB",    kilobytes(-444).to_fs(:human_size)
+    assert_equal "-1.12 TB",   -1234567890123.to_fs(:human_size)
+    assert_equal "-1.01 KB",   kilobytes(-1.0100).to_fs(:human_size, precision: 4)
+  end
+
   def test_to_fs__human_size_with_options_hash
     assert_equal "1.2 MB",   1234567.to_fs(:human_size, precision: 2)
     assert_equal "3 Bytes",  3.14159265.to_fs(:human_size, precision: 4)

activesupport/test/number_helper_test.rb

@@ -282,6 +282,18 @@ module ActiveSupport
         end
       end
 
+      def test_number_number_to_human_size_with_negative_number
+        [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
+          assert_equal "-1 Bytes",   number_helper.number_to_human_size(-1)
+          assert_equal "-3 Bytes",   number_helper.number_to_human_size(-3.14159265)
+          assert_equal "-123 Bytes", number_helper.number_to_human_size(-123)
+          assert_equal "-12.1 KB",   number_helper.number_to_human_size(-12345)
+          assert_equal "-444 KB",    number_helper.number_to_human_size(kilobytes(-444))
+          assert_equal "-1.12 TB",   number_helper.number_to_human_size(-1234567890123)
+          assert_equal "-1.01 KB",   number_helper.number_to_human_size(kilobytes(-1.0100), precision: 4)
+        end
+      end
+
       def test_number_to_human_size_with_options_hash
         [@instance_with_helpers, TestClassWithClassNumberHelpers, ActiveSupport::NumberHelper].each do |number_helper|
           assert_equal "1.2 MB",   number_helper.number_to_human_size(1234567, precision: 2)