diff options
Diffstat (limited to 'activemodel/test/cases/type/decimal_test.rb')
-rw-r--r-- | activemodel/test/cases/type/decimal_test.rb | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/activemodel/test/cases/type/decimal_test.rb b/activemodel/test/cases/type/decimal_test.rb new file mode 100644 index 0000000000..353dbf84ad --- /dev/null +++ b/activemodel/test/cases/type/decimal_test.rb @@ -0,0 +1,57 @@ +require "cases/helper" +require "active_model/type" + +module ActiveModel + module Type + class DecimalTest < ActiveModel::TestCase + def test_type_cast_decimal + type = Decimal.new + assert_equal BigDecimal.new("0"), type.cast(BigDecimal.new("0")) + assert_equal BigDecimal.new("123"), type.cast(123.0) + assert_equal BigDecimal.new("1"), type.cast(:"1") + end + + def test_type_cast_decimal_from_float_with_large_precision + type = Decimal.new(precision: ::Float::DIG + 2) + assert_equal BigDecimal.new("123.0"), type.cast(123.0) + end + + def test_type_cast_from_float_with_unspecified_precision + type = Decimal.new + assert_equal 22.68.to_d, type.cast(22.68) + end + + def test_type_cast_decimal_from_rational_with_precision + type = Decimal.new(precision: 2) + assert_equal BigDecimal("0.33"), type.cast(Rational(1, 3)) + end + + def test_type_cast_decimal_from_rational_with_precision_and_scale + type = Decimal.new(precision: 4, scale: 2) + assert_equal BigDecimal("0.33"), type.cast(Rational(1, 3)) + end + + def test_type_cast_decimal_from_rational_without_precision_defaults_to_18_36 + type = Decimal.new + assert_equal BigDecimal("0.333333333333333333E0"), type.cast(Rational(1, 3)) + end + + def test_type_cast_decimal_from_object_responding_to_d + value = Object.new + def value.to_d + BigDecimal.new("1") + end + type = Decimal.new + assert_equal BigDecimal("1"), type.cast(value) + end + + def test_changed? + type = Decimal.new + + assert type.changed?(5.0, 5.0, '5.0wibble') + assert_not type.changed?(5.0, 5.0, '5.0') + assert_not type.changed?(-5.0, -5.0, '-5.0') + end + end + end +end |