41 lines
1.1 KiB
Ruby
41 lines
1.1 KiB
Ruby
# frozen_string_literal: true
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require_relative "../abstract_unit"
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require "active_support/core_ext/class"
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require "set"
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class ClassTest < ActiveSupport::TestCase
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class Parent; end
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class Foo < Parent; end
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class Bar < Foo; end
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class Baz < Bar; end
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class A < Parent; end
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class B < A; end
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class C < B; end
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def test_descendants
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assert_equal [Foo, Bar, Baz, A, B, C].to_set, Parent.descendants.to_set
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assert_equal [Bar, Baz].to_set, Foo.descendants.to_set
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assert_equal [Baz], Bar.descendants
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assert_equal [], Baz.descendants
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end
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def test_subclasses
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assert_equal [Foo, A].to_set, Parent.subclasses.to_set
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assert_equal [Bar], Foo.subclasses
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assert_equal [Baz], Bar.subclasses
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assert_equal [], Baz.subclasses
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end
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def test_descendants_excludes_singleton_classes
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klass = Parent.new.singleton_class
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assert_not Parent.descendants.include?(klass), "descendants should not include singleton classes"
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end
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def test_subclasses_excludes_singleton_classes
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klass = Parent.new.singleton_class
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assert_not Parent.subclasses.include?(klass), "subclasses should not include singleton classes"
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end
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end
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