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# frozen_string_literal: false
require 'test/unit'
require 'tempfile'
require 'irb'
require 'rubygems' if defined?(Gem)
module TestIRB
class TestContext < Test::Unit::TestCase
class TestInputMethod < ::IRB::InputMethod
attr_reader :list, :line_no
def initialize(list = [])
super("test")
@line_no = 0
@list = list
end
def gets
@list[@line_no]&.tap {@line_no += 1}
end
def eof?
@line_no >= @list.size
end
def encoding
Encoding.default_external
end
end
def setup
IRB.init_config(nil)
IRB.conf[:USE_READLINE] = false
IRB.conf[:VERBOSE] = false
workspace = IRB::WorkSpace.new(Object.new)
@context = IRB::Context.new(nil, workspace, TestInputMethod.new)
end
def test_last_value
assert_nil(@context.last_value)
assert_nil(@context.evaluate('_', 1))
obj = Object.new
@context.set_last_value(obj)
assert_same(obj, @context.last_value)
assert_same(obj, @context.evaluate('_', 1))
end
def test_evaluate_with_exception
assert_nil(@context.evaluate("$!", 1))
e = assert_raise_with_message(RuntimeError, 'foo') {
@context.evaluate("raise 'foo'", 1)
}
assert_equal('foo', e.message)
assert_same(e, @context.evaluate('$!', 1, exception: e))
end
def test_eval_input
verbose, $VERBOSE = $VERBOSE, nil
input = TestInputMethod.new([
"raise 'Foo'\n",
"_\n",
"0\n",
"_\n",
])
irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
out, err = capture_io do
irb.eval_input
end
assert_empty err
assert_pattern_list([:*, /RuntimeError \(.*Foo.*\).*\n/,
:*, /#<RuntimeError: Foo>\n/,
:*, /0$/,
:*, /0$/,
/\s*/], out)
ensure
$VERBOSE = verbose
end
end
end
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