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# frozen_string_literal: true
require_relative "../test_helper"
module Prism
class ParseTest < TestCase
def test_parse_result
result = Prism.parse("")
assert_kind_of ParseResult, result
result = Prism.parse_file(__FILE__)
assert_kind_of ParseResult, result
end
def test_parse_empty_string
result = Prism.parse("")
assert_equal [], result.value.statements.body
end
def test_parse_takes_file_path
filepath = "filepath.rb"
result = Prism.parse("def foo; __FILE__; end", filepath: filepath)
assert_equal filepath, find_source_file_node(result.value).filepath
end
def test_parse_takes_line
line = 4
result = Prism.parse("def foo\n __FILE__\nend", line: line)
assert_equal line, result.value.location.start_line
assert_equal line + 1, find_source_file_node(result.value).location.start_line
result = Prism.parse_lex("def foo\n __FILE__\nend", line: line)
assert_equal line, result.value.first.location.start_line
end
def test_parse_takes_negative_lines
line = -2
result = Prism.parse("def foo\n __FILE__\nend", line: line)
assert_equal line, result.value.location.start_line
assert_equal line + 1, find_source_file_node(result.value).location.start_line
result = Prism.parse_lex("def foo\n __FILE__\nend", line: line)
assert_equal line, result.value.first.location.start_line
end
def test_parse_file
node = Prism.parse_file(__FILE__).value
assert_kind_of ProgramNode, node
error = assert_raise Errno::ENOENT do
Prism.parse_file("idontexist.rb")
end
assert_equal "No such file or directory - idontexist.rb", error.message
assert_raise TypeError do
Prism.parse_file(nil)
end
end
def test_parse_tempfile
Tempfile.create(["test_parse_tempfile", ".rb"]) do |t|
t.puts ["begin\n", " end\n"]
t.flush
Prism.parse_file(t.path)
end
end
if RUBY_ENGINE != "truffleruby"
def test_parse_nonascii
Dir.mktmpdir do |dir|
path = File.join(dir, "\u{3042 3044 3046 3048 304a}.rb".encode(Encoding::Windows_31J))
File.write(path, "ok")
Prism.parse_file(path)
end
end
end
def test_parse_directory
error = nil
begin
Prism.parse_file(__dir__)
rescue SystemCallError => error
end
assert_kind_of Errno::EISDIR, error
end
def test_partial_script
assert Prism.parse_failure?("break")
assert Prism.parse_success?("break", partial_script: true)
assert Prism.parse_failure?("next")
assert Prism.parse_success?("next", partial_script: true)
assert Prism.parse_failure?("redo")
assert Prism.parse_success?("redo", partial_script: true)
assert Prism.parse_failure?("yield")
assert Prism.parse_success?("yield", partial_script: true)
end
def test_version
assert Prism.parse_success?("1 + 1", version: "3.3")
assert Prism.parse_success?("1 + 1", version: "3.3.0")
assert Prism.parse_success?("1 + 1", version: "3.3.1")
assert Prism.parse_success?("1 + 1", version: "3.3.9")
assert Prism.parse_success?("1 + 1", version: "3.3.10")
assert Prism.parse_success?("1 + 1", version: "3.4")
assert Prism.parse_success?("1 + 1", version: "3.4.0")
assert Prism.parse_success?("1 + 1", version: "3.4.9")
assert Prism.parse_success?("1 + 1", version: "3.4.10")
assert Prism.parse_success?("1 + 1", version: "3.5")
assert Prism.parse_success?("1 + 1", version: "3.5.0")
assert Prism.parse_success?("1 + 1", version: "latest")
# Test edge case
error = assert_raise(ArgumentError) { Prism.parse("1 + 1", version: "latest2") }
assert_equal "invalid version: latest2", error.message
assert_raise ArgumentError do
Prism.parse("1 + 1", version: "3.3.a")
end
# Not supported version (too old)
assert_raise ArgumentError do
Prism.parse("1 + 1", version: "3.2.0")
end
# Not supported version (too new)
assert_raise ArgumentError do
Prism.parse("1 + 1", version: "3.6.0")
end
end
def test_scopes
assert_kind_of Prism::CallNode, Prism.parse_statement("foo")
assert_kind_of Prism::LocalVariableReadNode, Prism.parse_statement("foo", scopes: [[:foo]])
assert_kind_of Prism::LocalVariableReadNode, Prism.parse_statement("foo", scopes: [Prism.scope(locals: [:foo])])
assert Prism.parse_failure?("foo(*)")
assert Prism.parse_success?("foo(*)", scopes: [Prism.scope(forwarding: [:*])])
assert Prism.parse_failure?("foo(**)")
assert Prism.parse_success?("foo(**)", scopes: [Prism.scope(forwarding: [:**])])
assert Prism.parse_failure?("foo(&)")
assert Prism.parse_success?("foo(&)", scopes: [Prism.scope(forwarding: [:&])])
assert Prism.parse_failure?("foo(...)")
assert Prism.parse_success?("foo(...)", scopes: [Prism.scope(forwarding: [:"..."])])
end
private
def find_source_file_node(program)
queue = [program]
while (node = queue.shift)
return node if node.is_a?(SourceFileNode)
queue.concat(node.compact_child_nodes)
end
end
end
end
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