assert('Kernel.fail, Kernel#fail') do assert_raise(RuntimeError) { fail } assert_raise(RuntimeError) { Kernel.fail } end assert('Kernel.caller, Kernel#caller') do skip "backtrace isn't available" if caller(0).empty? caller_lineno = __LINE__ + 3 c = Class.new do def foo(*args) caller(*args) end def bar(*args) foo(*args) end def baz(*args) bar(*args) end end assert_equal "kernel.rb:#{caller_lineno}:in foo", c.new.baz(0)[0][-19..-1] assert_equal "bar", c.new.baz[0][-3..-1] assert_equal "foo", c.new.baz(0)[0][-3..-1] assert_equal "bar", c.new.baz(1)[0][-3..-1] assert_equal "baz", c.new.baz(2)[0][-3..-1] assert_equal ["foo", "bar"], c.new.baz(0, 2).map { |i| i[-3..-1] } assert_equal ["bar", "baz"], c.new.baz(1..2).map { |i| i[-3..-1] } assert_nil c.new.baz(10..20) assert_raise(ArgumentError) { c.new.baz(-1) } assert_raise(ArgumentError) { c.new.baz(-1, 1) } assert_raise(ArgumentError) { c.new.baz(1, -1) } assert_raise(TypeError) { c.new.baz(nil) } end assert('Kernel#__method__') do assert_equal(:m, Class.new {def m; __method__; end}.new.m) assert_equal(:m, Class.new {define_method(:m) {__method__}}.new.m) c = Class.new do [:m1, :m2].each do |m| define_method(m) do __method__ end end end assert_equal(:m1, c.new.m1) assert_equal(:m2, c.new.m2) end assert('Kernel#Integer') do assert_equal(26, Integer("0x1a")) assert_equal(930, Integer("0930", 10)) assert_equal(7, Integer("111", 2)) assert_equal(0, Integer("0")) assert_equal(0, Integer("00000")) assert_raise(TypeError) { Integer(nil) } skip unless Object.const_defined?(:Float) assert_equal(123, Integer(123.999)) end assert('Kernel#Float') do skip unless Object.const_defined?(:Float) assert_equal(1.0, Float(1)) assert_equal(123.456, Float(123.456)) assert_equal(123.456, Float("123.456")) assert_raise(TypeError) { Float(nil) } end assert('Kernel#String') do assert_equal("main", String(self)) assert_equal("Object", String(self.class)) assert_equal("123456", String(123456)) end assert('Kernel#Array') do assert_equal([1], Kernel.Array(1)) assert_equal([1, 2, 3, 4, 5], Kernel.Array([1, 2, 3, 4, 5])) assert_equal([1, 2, 3, 4, 5], Kernel.Array(1..5)) assert_equal([[:a, 1], [:b, 2], [:c, 3]], Kernel.Array({a:1, b:2, c:3})) end assert('Kernel#Hash') do assert_equal({}, Hash([])) assert_equal({}, Hash(nil)) assert_equal({:key => :value}, Hash(key: :value)) assert_raise(TypeError) { Hash([1, 2, 3]) } end