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Contents
# frozen_string_literal: true
require "spec_helper"
describe GraphQL::Language::Lexer do
subject { GraphQL::Language::Lexer }
describe ".tokenize" do
let(:query_string) {%|
{
query getCheese {
cheese(id: 1) {
... cheeseFields
}
}
}
|}
let(:tokens) { subject.tokenize(query_string) }
it "makes utf-8 comments" do
tokens = subject.tokenize("# 不要!\n{")
comment_token = tokens.first.prev_token
assert_equal "# 不要!", comment_token.to_s
end
it "keeps track of previous_token" do
assert_equal tokens[0], tokens[1].prev_token
end
describe "block strings" do
let(:query_string) { %|{ a(b: """\nc\n d\n""")}|}
it "tokenizes them" do
str_token = tokens[5]
assert_equal "c\n d", str_token.value
end
end
it "unescapes escaped characters" do
assert_equal "\" \\ / \b \f \n \r \t", subject.tokenize('"\\" \\\\ \\/ \\b \\f \\n \\r \\t"').first.to_s
end
it "unescapes escaped unicode characters" do
assert_equal "\t", subject.tokenize('"\\u0009"').first.to_s
end
it "rejects bad unicode, even when there's good unicode in the string" do
assert_equal :BAD_UNICODE_ESCAPE, subject.tokenize('"\\u0XXF \\u0009"').first.name
end
it "clears the previous_token between runs" do
tok_2 = subject.tokenize(query_string)
assert_nil tok_2[0].prev_token
end
it "counts string position properly" do
tokens = subject.tokenize('{ a(b: "c")}')
str_token = tokens[5]
assert_equal :STRING, str_token.name
assert_equal "c", str_token.value
assert_equal 8, str_token.col
assert_equal '(STRING "c" [1:8])', str_token.inspect
rparen_token = tokens[6]
assert_equal '(RPAREN ")" [1:10])', rparen_token.inspect
end
end
end
Version data entries
26 entries across 26 versions & 1 rubygems