const lex = require('../../src/services/search/services/lex.js'); describe("Lexer fulltext", () => { it("simple lexing", () => { expect(lex("hello world").fulltextTokens.map(t => t.token)) .toEqual(["hello", "world"]); }); it("use quotes to keep words together", () => { expect(lex("'hello world' my friend").fulltextTokens.map(t => t.token)) .toEqual(["hello world", "my", "friend"]); expect(lex('"hello world" my friend').fulltextTokens.map(t => t.token)) .toEqual(["hello world", "my", "friend"]); expect(lex('`hello world` my friend').fulltextTokens.map(t => t.token)) .toEqual(["hello world", "my", "friend"]); }); it("you can use different quotes and other special characters inside quotes", () => { expect(lex("'i can use \" or ` or #~=*' without problem").fulltextTokens.map(t => t.token)) .toEqual(["i can use \" or ` or #~=*", "without", "problem"]); }); it("I can use backslash to escape quotes", () => { expect(lex("hello \\\"world\\\"").fulltextTokens.map(t => t.token)) .toEqual(["hello", '"world"']); expect(lex("hello \\\'world\\\'").fulltextTokens.map(t => t.token)) .toEqual(["hello", "'world'"]); expect(lex("hello \\\`world\\\`").fulltextTokens.map(t => t.token)) .toEqual(["hello", '`world`']); expect(lex('"hello \\\"world\\\"').fulltextTokens.map(t => t.token)) .toEqual(['hello "world"']); expect(lex("'hello \\\'world\\\''").fulltextTokens.map(t => t.token)) .toEqual(["hello 'world'"]); expect(lex("`hello \\\`world\\\``").fulltextTokens.map(t => t.token)) .toEqual(["hello `world`"]); expect(lex("\\#token").fulltextTokens.map(t => t.token)) .toEqual(["#token"]); }); it("quote inside a word does not have a special meaning", () => { const lexResult = lex("d'Artagnan is dead #hero = d'Artagnan"); expect(lexResult.fulltextTokens.map(t => t.token)) .toEqual(["d'artagnan", "is", "dead"]); expect(lexResult.expressionTokens.map(t => t.token)) .toEqual(['#hero', '=', "d'artagnan"]); }); it("if quote is not ended then it's just one long token", () => { expect(lex("'unfinished quote").fulltextTokens.map(t => t.token)) .toEqual(["unfinished quote"]); }); it("parenthesis and symbols in fulltext section are just normal characters", () => { expect(lex("what's u=p ").fulltextTokens.map(t => t.token)) .toEqual(["what's", "u=p", ""]); }); it("operator characters in expressions are separate tokens", () => { expect(lex("# abc+=-def**-+d").expressionTokens.map(t => t.token)) .toEqual(["#", "abc", "+=-", "def", "**-+", "d"]); }); it("escaping special characters", () => { expect(lex("hello \\#\\~\\'").fulltextTokens.map(t => t.token)) .toEqual(["hello", "#~'"]); }); }); describe("Lexer expression", () => { it("simple attribute existence", () => { expect(lex("#label ~relation").expressionTokens.map(t => t.token)) .toEqual(["#label", "~relation"]); }); it("simple label operators", () => { expect(lex("#label*=*text").expressionTokens.map(t => t.token)) .toEqual(["#label", "*=*", "text"]); }); it("simple label operator with in quotes and without", () => { expect(lex("#label*=*'text'").expressionTokens) .toEqual([ {token: "#label", inQuotes: false, startIndex: 0, endIndex: 5}, {token: "*=*", inQuotes: false, startIndex: 6, endIndex: 8}, {token: "text", inQuotes: true, startIndex: 10, endIndex: 13} ]); expect(lex("#label*=*text").expressionTokens) .toEqual([ {token: "#label", inQuotes: false, startIndex: 0, endIndex: 5}, {token: "*=*", inQuotes: false, startIndex: 6, endIndex: 8}, {token: "text", inQuotes: false, startIndex: 9, endIndex: 12} ]); }); it("note. prefix also separates fulltext from expression", () => { expect(lex(`hello fulltext note.labels.capital = Prague`).expressionTokens.map(t => t.token)) .toEqual(["note", ".", "labels", ".", "capital", "=", "prague"]); }); it("note. prefix in quotes will note start expression", () => { expect(lex(`hello fulltext "note.txt"`).expressionTokens.map(t => t.token)) .toEqual([]); expect(lex(`hello fulltext "note.txt"`).fulltextTokens.map(t => t.token)) .toEqual(["hello", "fulltext", "note.txt"]); }); it("complex expressions with and, or and parenthesis", () => { expect(lex(`# (#label=text OR #second=text) AND ~relation`).expressionTokens.map(t => t.token)) .toEqual(["#", "(", "#label", "=", "text", "or", "#second", "=", "text", ")", "and", "~relation"]); }); it("dot separated properties", () => { expect(lex(`# ~author.title = 'Hugh Howey' AND note.'book title' = 'Silo'`).expressionTokens.map(t => t.token)) .toEqual(["#", "~author", ".", "title", "=", "hugh howey", "and", "note", ".", "book title", "=", "silo"]); }); it("negation of label and relation", () => { expect(lex(`#!capital ~!neighbor`).expressionTokens.map(t => t.token)) .toEqual(["#!capital", "~!neighbor"]); }); it("negation of sub-expression", () => { expect(lex(`# not(#capital) and note.noteId != "root"`).expressionTokens.map(t => t.token)) .toEqual(["#", "not", "(", "#capital", ")", "and", "note", ".", "noteid", "!=", "root"]); }); }); describe("Lexer invalid queries and edge cases", () => { it("concatenated attributes", () => { expect(lex("#label~relation").expressionTokens.map(t => t.token)) .toEqual(["#label", "~relation"]); }); it("trailing escape \\", () => { expect(lex('abc \\').fulltextTokens.map(t => t.token)) .toEqual(["abc", "\\"]); }); });