1 files changed, 108 insertions, 0 deletions
diff --git a/activemodel/test/cases/type/integer_test.rb b/activemodel/test/cases/type/integer_test.rb
new file mode 100644
index 0000000000..dac922db42
--- /dev/null
+++ b/activemodel/test/cases/type/integer_test.rb
@@ -0,0 +1,108 @@
+require "cases/helper"
+require "active_model/type"
+
+module ActiveModel
+  module Type
+    class IntegerTest < ActiveModel::TestCase
+      test "simple values" do
+        type = Type::Integer.new
+        assert_equal 1, type.cast(1)
+        assert_equal 1, type.cast('1')
+        assert_equal 1, type.cast('1ignore')
+        assert_equal 0, type.cast('bad1')
+        assert_equal 0, type.cast('bad')
+        assert_equal 1, type.cast(1.7)
+        assert_equal 0, type.cast(false)
+        assert_equal 1, type.cast(true)
+        assert_nil type.cast(nil)
+      end
+
+      test "random objects cast to nil" do
+        type = Type::Integer.new
+        assert_nil type.cast([1,2])
+        assert_nil type.cast({1 => 2})
+        assert_nil type.cast(1..2)
+      end
+
+      test "casting objects without to_i" do
+        type = Type::Integer.new
+        assert_nil type.cast(::Object.new)
+      end
+
+      test "casting nan and infinity" do
+        type = Type::Integer.new
+        assert_nil type.cast(::Float::NAN)
+        assert_nil type.cast(1.0/0.0)
+      end
+
+      test "casting booleans for database" do
+        type = Type::Integer.new
+        assert_equal 1, type.serialize(true)
+        assert_equal 0, type.serialize(false)
+      end
+
+      test "changed?" do
+        type = Type::Integer.new
+
+        assert type.changed?(5, 5, '5wibble')
+        assert_not type.changed?(5, 5, '5')
+        assert_not type.changed?(5, 5, '5.0')
+        assert_not type.changed?(-5, -5, '-5')
+        assert_not type.changed?(-5, -5, '-5.0')
+        assert_not type.changed?(nil, nil, nil)
+      end
+
+      test "values below int min value are out of range" do
+        assert_raises(::RangeError) do
+          Integer.new.serialize(-2147483649)
+        end
+      end
+
+      test "values above int max value are out of range" do
+        assert_raises(::RangeError) do
+          Integer.new.serialize(2147483648)
+        end
+      end
+
+      test "very small numbers are out of range" do
+        assert_raises(::RangeError) do
+          Integer.new.serialize(-9999999999999999999999999999999)
+        end
+      end
+
+      test "very large numbers are out of range" do
+        assert_raises(::RangeError) do
+          Integer.new.serialize(9999999999999999999999999999999)
+        end
+      end
+
+      test "normal numbers are in range" do
+        type = Integer.new
+        assert_equal(0, type.serialize(0))
+        assert_equal(-1, type.serialize(-1))
+        assert_equal(1, type.serialize(1))
+      end
+
+      test "int max value is in range" do
+        assert_equal(2147483647, Integer.new.serialize(2147483647))
+      end
+
+      test "int min value is in range" do
+        assert_equal(-2147483648, Integer.new.serialize(-2147483648))
+      end
+
+      test "columns with a larger limit have larger ranges" do
+        type = Integer.new(limit: 8)
+
+        assert_equal(9223372036854775807, type.serialize(9223372036854775807))
+        assert_equal(-9223372036854775808, type.serialize(-9223372036854775808))
+        assert_raises(::RangeError) do
+          type.serialize(-9999999999999999999999999999999)
+        end
+        assert_raises(::RangeError) do
+          type.serialize(9999999999999999999999999999999)
+        end
+      end
+    end
+  end
+end