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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
def reset
@line_no = 0
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))
e = assert_raise(SyntaxError) {
@context.evaluate("1,2,3", 1, exception: e)
}
assert_match(/\A\(irb\):1:/, e.message)
assert_not_match(/rescue _\.class/, e.message)
end
def test_evaluate_with_onigmo_warning
assert_warning("(irb):1: warning: character class has duplicated range: /[aa]/\n") do
@context.evaluate('/[aa]/', 1)
end
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_output do
irb.eval_input
end
assert_empty err
assert_pattern_list([:*, /RuntimeError \(.*Foo.*\).*\n/,
:*, /#<RuntimeError: Foo>\n/,
:*, /0$/,
:*, /0$/,
/\s*/], out)
ensure
$VERBOSE = verbose
end
def test_default_config
assert_equal(true, @context.use_colorize?)
end
def test_assignment_expression
input = TestInputMethod.new
irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
[
"foo = bar",
"@foo = bar",
"$foo = bar",
"@@foo = bar",
"::Foo = bar",
"a::Foo = bar",
"Foo = bar",
"foo.bar = 1",
"foo[1] = bar",
"foo += bar",
"foo -= bar",
"foo ||= bar",
"foo &&= bar",
"foo, bar = 1, 2",
"foo.bar=(1)",
"foo; foo = bar",
"foo; foo = bar; ;\n ;",
"foo\nfoo = bar",
].each do |exp|
assert(
irb.assignment_expression?(exp),
"#{exp.inspect}: should be an assignment expression"
)
end
[
"foo",
"foo.bar",
"foo[0]",
"foo = bar; foo",
"foo = bar\nfoo",
].each do |exp|
refute(
irb.assignment_expression?(exp),
"#{exp.inspect}: should not be an assignment expression"
)
end
end
def test_echo_on_assignment
input = TestInputMethod.new([
"a = 1\n",
"a\n",
"a, b = 2, 3\n",
"a\n",
"b\n",
"b = 4\n",
"_\n"
])
irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
irb.context.return_format = "=> %s\n"
# The default
irb.context.echo = true
irb.context.echo_on_assignment = false
out, err = capture_io do
irb.eval_input
end
assert_empty err
assert_equal("=> 1\n=> 2\n=> 3\n=> 4\n", out)
# Everything is output, like before echo_on_assignment was introduced
input.reset
irb.context.echo = true
irb.context.echo_on_assignment = true
out, err = capture_io do
irb.eval_input
end
assert_empty err
assert_equal("=> 1\n=> 1\n=> [2, 3]\n=> 2\n=> 3\n=> 4\n=> 4\n", out)
# Nothing is output when echo is false
input.reset
irb.context.echo = false
irb.context.echo_on_assignment = false
out, err = capture_io do
irb.eval_input
end
assert_empty err
assert_equal("", out)
# Nothing is output when echo is false even if echo_on_assignment is true
input.reset
irb.context.echo = false
irb.context.echo_on_assignment = true
out, err = capture_io do
irb.eval_input
end
assert_empty err
assert_equal("", out)
end
def test_echo_on_assignment_conf
# Default
IRB.conf[:ECHO] = nil
IRB.conf[:ECHO_ON_ASSIGNMENT] = nil
input = TestInputMethod.new()
irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
assert(irb.context.echo?, "echo? should be true by default")
refute(irb.context.echo_on_assignment?, "echo_on_assignment? should be false by default")
# Explicitly set :ECHO to false
IRB.conf[:ECHO] = false
irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
refute(irb.context.echo?, "echo? should be false when IRB.conf[:ECHO] is set to false")
refute(irb.context.echo_on_assignment?, "echo_on_assignment? should be false by default")
# Explicitly set :ECHO_ON_ASSIGNMENT to true
IRB.conf[:ECHO] = nil
IRB.conf[:ECHO_ON_ASSIGNMENT] = true
irb = IRB::Irb.new(IRB::WorkSpace.new(Object.new), input)
assert(irb.context.echo?, "echo? should be true by default")
assert(irb.context.echo_on_assignment?, "echo_on_assignment? should be true when IRB.conf[:ECHO_ON_ASSIGNMENT] is set to true")
end
end
end
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