282 lines
9.6 KiB
Ruby
282 lines
9.6 KiB
Ruby
# frozen_string_literal: true
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require "cases/helper"
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require "active_model/attribute_set"
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module ActiveModel
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class AttributeSetTest < ActiveModel::TestCase
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test "building a new set from raw attributes" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Float.new)
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attributes = builder.build_from_database(foo: "1.1", bar: "2.2")
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assert_equal 1, attributes[:foo].value
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assert_equal 2.2, attributes[:bar].value
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assert_equal :foo, attributes[:foo].name
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assert_equal :bar, attributes[:bar].name
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end
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test "building with custom types" do
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builder = AttributeSet::Builder.new(foo: Type::Float.new)
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attributes = builder.build_from_database({ foo: "3.3", bar: "4.4" }, { bar: Type::Integer.new })
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assert_equal 3.3, attributes[:foo].value
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assert_equal 4, attributes[:bar].value
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end
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test "[] returns a null object" do
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builder = AttributeSet::Builder.new(foo: Type::Float.new)
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attributes = builder.build_from_database(foo: "3.3")
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assert_equal "3.3", attributes[:foo].value_before_type_cast
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assert_nil attributes[:bar].value_before_type_cast
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assert_equal :bar, attributes[:bar].name
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end
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test "duping creates a new hash, but does not dup the attributes" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::String.new)
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attributes = builder.build_from_database(foo: 1, bar: "foo")
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# Ensure the type cast value is cached
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attributes[:foo].value
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attributes[:bar].value
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duped = attributes.dup
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duped.write_from_database(:foo, 2)
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duped[:bar].value << "bar"
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assert_equal 1, attributes[:foo].value
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assert_equal 2, duped[:foo].value
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assert_equal "foobar", attributes[:bar].value
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assert_equal "foobar", duped[:bar].value
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end
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test "deep_duping creates a new hash and dups each attribute" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::String.new)
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attributes = builder.build_from_database(foo: 1, bar: "foo")
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# Ensure the type cast value is cached
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attributes[:foo].value
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attributes[:bar].value
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duped = attributes.deep_dup
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duped.write_from_database(:foo, 2)
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duped[:bar].value << "bar"
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assert_equal 1, attributes[:foo].value
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assert_equal 2, duped[:foo].value
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assert_equal "foo", attributes[:bar].value
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assert_equal "foobar", duped[:bar].value
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end
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test "freezing cloned set does not freeze original" do
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attributes = AttributeSet.new({})
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clone = attributes.clone
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clone.freeze
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assert_predicate clone, :frozen?
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assert_not_predicate attributes, :frozen?
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end
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test "to_hash returns a hash of the type cast values" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Float.new)
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attributes = builder.build_from_database(foo: "1.1", bar: "2.2")
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assert_equal({ foo: 1, bar: 2.2 }, attributes.to_hash)
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assert_equal({ foo: 1, bar: 2.2 }, attributes.to_h)
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end
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test "to_hash maintains order" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Float.new)
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attributes = builder.build_from_database(foo: "2.2", bar: "3.3")
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attributes[:bar]
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hash = attributes.to_h
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assert_equal [[:foo, 2], [:bar, 3.3]], hash.to_a
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end
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test "values_before_type_cast" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Integer.new)
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attributes = builder.build_from_database(foo: "1.1", bar: "2.2")
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assert_equal({ foo: "1.1", bar: "2.2" }, attributes.values_before_type_cast)
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end
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test "known columns are built with uninitialized attributes" do
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attributes = attributes_with_uninitialized_key
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assert_predicate attributes[:foo], :initialized?
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assert_not_predicate attributes[:bar], :initialized?
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end
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test "uninitialized attributes are not included in the attributes hash" do
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attributes = attributes_with_uninitialized_key
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assert_equal({ foo: 1 }, attributes.to_hash)
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end
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test "uninitialized attributes are not included in keys" do
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attributes = attributes_with_uninitialized_key
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assert_equal [:foo], attributes.keys
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end
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test "uninitialized attributes return false for key?" do
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attributes = attributes_with_uninitialized_key
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assert attributes.key?(:foo)
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assert_not attributes.key?(:bar)
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end
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test "unknown attributes return false for key?" do
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attributes = attributes_with_uninitialized_key
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assert_not attributes.key?(:wibble)
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end
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test "fetch_value returns the value for the given initialized attribute" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Float.new)
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attributes = builder.build_from_database(foo: "1.1", bar: "2.2")
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assert_equal 1, attributes.fetch_value(:foo)
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assert_equal 2.2, attributes.fetch_value(:bar)
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end
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test "fetch_value returns nil for unknown attributes" do
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attributes = attributes_with_uninitialized_key
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assert_nil attributes.fetch_value(:wibble) { "hello" }
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end
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test "fetch_value returns nil for unknown attributes when types has a default" do
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types = Hash.new(Type::Value.new)
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builder = AttributeSet::Builder.new(types)
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attributes = builder.build_from_database
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assert_nil attributes.fetch_value(:wibble) { "hello" }
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end
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test "fetch_value uses the given block for uninitialized attributes" do
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attributes = attributes_with_uninitialized_key
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value = attributes.fetch_value(:bar) { |n| n.to_s + "!" }
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assert_equal "bar!", value
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end
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test "fetch_value returns nil for uninitialized attributes if no block is given" do
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attributes = attributes_with_uninitialized_key
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assert_nil attributes.fetch_value(:bar)
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end
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test "the primary_key is always initialized" do
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defaults = { foo: Attribute.from_user(:foo, nil, nil) }
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builder = AttributeSet::Builder.new({ foo: Type::Integer.new }, defaults)
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attributes = builder.build_from_database
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assert attributes.key?(:foo)
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assert_equal [:foo], attributes.keys
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assert_predicate attributes[:foo], :initialized?
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end
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class MyType
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def cast(value)
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return if value.nil?
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value + " from user"
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end
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def deserialize(value)
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return if value.nil?
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value + " from database"
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end
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def assert_valid_value(*)
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end
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end
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test "write_from_database sets the attribute with database typecasting" do
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builder = AttributeSet::Builder.new(foo: MyType.new)
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attributes = builder.build_from_database
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assert_nil attributes.fetch_value(:foo)
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attributes.write_from_database(:foo, "value")
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assert_equal "value from database", attributes.fetch_value(:foo)
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end
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test "write_from_user sets the attribute with user typecasting" do
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builder = AttributeSet::Builder.new(foo: MyType.new)
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attributes = builder.build_from_database
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assert_nil attributes.fetch_value(:foo)
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attributes.write_from_user(:foo, "value")
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assert_equal "value from user", attributes.fetch_value(:foo)
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end
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test "freezing doesn't prevent the set from materializing" do
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builder = AttributeSet::Builder.new(foo: Type::String.new)
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attributes = builder.build_from_database(foo: "1")
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attributes.freeze
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assert_equal({ foo: "1" }, attributes.to_hash)
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end
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test "marshalling dump/load legacy materialized attribute hash" do
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builder = AttributeSet::Builder.new(foo: Type::String.new)
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def builder.build_from_database(values = {}, additional_types = {})
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attributes = LazyAttributeHash.new(types, values, additional_types, default_attributes)
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AttributeSet.new(attributes)
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end
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attributes = builder.build_from_database(foo: "1")
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attributes.instance_variable_get(:@attributes).instance_eval do
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class << self
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def marshal_dump
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materialize # legacy marshal format before Rails 5.1
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end
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end
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end
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data = Marshal.dump(attributes)
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attributes = assert_deprecated { Marshal.load(data) }
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assert_equal({ foo: "1" }, attributes.to_hash)
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end
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test "#accessed_attributes returns only attributes which have been read" do
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builder = AttributeSet::Builder.new(foo: Type::Value.new, bar: Type::Value.new)
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attributes = builder.build_from_database(foo: "1", bar: "2")
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assert_equal [], attributes.accessed
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attributes.fetch_value(:foo)
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assert_equal [:foo], attributes.accessed
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end
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test "#map returns a new attribute set with the changes applied" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Integer.new)
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attributes = builder.build_from_database(foo: "1", bar: "2")
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new_attributes = attributes.map do |attr|
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attr.with_cast_value(attr.value + 1)
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end
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assert_equal 2, new_attributes.fetch_value(:foo)
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assert_equal 3, new_attributes.fetch_value(:bar)
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end
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test "comparison for equality is correctly implemented" do
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Integer.new)
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attributes = builder.build_from_database(foo: "1", bar: "2")
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attributes2 = builder.build_from_database(foo: "1", bar: "2")
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attributes3 = builder.build_from_database(foo: "2", bar: "2")
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assert_equal attributes, attributes2
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assert_not_equal attributes2, attributes3
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end
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private
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def attributes_with_uninitialized_key
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builder = AttributeSet::Builder.new(foo: Type::Integer.new, bar: Type::Float.new)
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builder.build_from_database(foo: "1.1")
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end
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end
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end
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