denoland-deno/cli/tests/integration/repl_tests.rs

// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.

use test_util as util;
use test_util::assert_contains;
use test_util::assert_ends_with;
use test_util::assert_not_contains;

#[test]
fn pty_multiline() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("(\n1 + 2\n)");
    console.write_line("{\nfoo: \"foo\"\n}");
    console.write_line("`\nfoo\n`");
    console.write_line("`\n\\`\n`");
    console.write_line("'{'");
    console.write_line("'('");
    console.write_line("'['");
    console.write_line("/{/");
    console.write_line("/\\(/");
    console.write_line("/\\[/");
    console.write_line("console.log(\"{test1} abc {test2} def {{test3}}\".match(/{([^{].+?)}/));");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, '3');
    assert_contains!(output, "{ foo: \"foo\" }");
    assert_contains!(output, "\"\\nfoo\\n\"");
    assert_contains!(output, "\"\\n`\\n\"");
    assert_contains!(output, "\"{\"");
    assert_contains!(output, "\"(\"");
    assert_contains!(output, "\"[\"");
    assert_contains!(output, "/{/");
    assert_contains!(output, "/\\(/");
    assert_contains!(output, "/\\[/");
    assert_contains!(output, "[ \"{test1}\", \"test1\" ]");
  });
}

#[test]
fn pty_null() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("null");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "null");
  });
}

#[test]
fn pty_unpaired_braces() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line(")");
    console.write_line("]");
    console.write_line("}");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "Unexpected token `)`");
    assert_contains!(output, "Unexpected token `]`");
    assert_contains!(output, "Unexpected token `}`");
  });
}

#[test]
fn pty_bad_input() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("'\\u{1f3b5}'[0]");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "Unterminated string literal");
  });
}

#[test]
fn pty_syntax_error_input() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("('\\u')");
    console.write_line("'");
    console.write_line("[{'a'}];");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(
      output,
      "Bad character escape sequence, expected 4 hex characters"
    );
    assert_contains!(output, "Unterminated string constant");
    assert_contains!(output, "Expected a semicolon");
  });
}

#[test]
fn pty_complete_symbol() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("Symbol.it\t");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "Symbol(Symbol.iterator)");
  });
}

#[test]
fn pty_complete_declarations() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("class MyClass {}");
    console.write_line("My\t");
    console.write_line("let myVar;");
    console.write_line("myV\t");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "> MyClass");
    assert_contains!(output, "> myVar");
  });
}

#[test]
fn pty_complete_primitives() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("let func = function test(){}");
    console.write_line("func.appl\t");
    console.write_line("let str = ''");
    console.write_line("str.leng\t");
    console.write_line("false.valueO\t");
    console.write_line("5n.valueO\t");
    console.write_line("let num = 5");
    console.write_line("num.toStrin\t");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "> func.apply");
    assert_contains!(output, "> str.length");
    assert_contains!(output, "> 5n.valueOf");
    assert_contains!(output, "> false.valueOf");
    assert_contains!(output, "> num.toString");
  });
}

#[test]
fn pty_complete_expression() {
  util::with_pty(&["repl"], |mut console| {
    console.write_text("Deno.\t\t");
    console.write_text("y");
    console.write_line("");
    console.write_line("close();");
    let output = console.read_all_output();
    assert_contains!(output, "Display all");
    assert_contains!(output, "core");
    assert_contains!(output, "args");
    assert_contains!(output, "exit");
    assert_contains!(output, "symlink");
    assert_contains!(output, "permissions");
  });
}

#[test]
fn pty_complete_imports() {
  util::with_pty(&["repl"], |mut console| {
    // single quotes
    console.write_line("import './001_hel\t'");
    // double quotes
    console.write_line("import { output } from \"./045_out\t\"");
    console.write_line("output('testing output');");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "Hello World");
    assert_contains!(
      output,
      // on windows, could contain either (it's flaky)
      "\ntesting output",
      "testing output\u{1b}",
    );
  });

  // ensure when the directory changes that the suggestions come from the cwd
  util::with_pty(&["repl"], |mut console| {
    console.write_line("Deno.chdir('./subdir');");
    console.write_line("import '../001_hel\t'");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "Hello World");
  });
}

#[test]
fn pty_complete_imports_no_panic_empty_specifier() {
  // does not panic when tabbing when empty
  util::with_pty(&["repl"], |mut console| {
    console.write_line("import '\t';");
    console.write_line("close();");
  });
}

#[test]
fn pty_ignore_symbols() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("Array.Symbol\t");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_contains!(output, "undefined");
    assert_not_contains!(
      output,
      "Uncaught TypeError: Array.Symbol is not a function"
    );
  });
}

#[test]
fn pty_assign_global_this() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("globalThis = 42;");
    console.write_line("close();");

    let output = console.read_all_output();
    assert_not_contains!(output, "panicked");
  });
}

#[test]
fn pty_emoji() {
  // windows was having issues displaying this
  util::with_pty(&["repl"], |mut console| {
    console.write_line(r#"console.log('\u{1F995}');"#);
    console.write_line("close();");

    let output = console.read_all_output();
    // only one for the output (since input is escaped)
    let emoji_count = output.chars().filter(|c| *c == '🦕').count();
    assert_eq!(emoji_count, 1);
  });
}

#[test]
fn console_log() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["console.log('hello')", "'world'"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "hello\nundefined\n\"world\"\n");
  assert!(err.is_empty());
}

#[test]
fn object_literal() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["{}", "{ foo: 'bar' }"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "{}\n{ foo: \"bar\" }\n");
  assert!(err.is_empty());
}

#[test]
fn block_expression() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["{};", "{\"\"}"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "undefined\n\"\"\n");
  assert!(err.is_empty());
}

#[test]
fn await_resolve() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["await Promise.resolve('done')"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "\"done\"\n");
  assert!(err.is_empty());
}

#[test]
fn await_timeout() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["await new Promise((r) => setTimeout(r, 0, 'done'))"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "\"done\"\n");
  assert!(err.is_empty());
}

#[test]
fn let_redeclaration() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["let foo = 0;", "foo", "let foo = 1;", "foo"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "undefined\n0\nundefined\n1\n");
  assert!(err.is_empty());
}

#[test]
fn repl_cwd() {
  let (_out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["Deno.cwd()"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert!(err.is_empty());
}

#[test]
fn typescript() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec![
      "function add(a: number, b: number) { return a + b }",
      "const result: number = add(1, 2) as number;",
      "result",
    ]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "undefined\nundefined\n3\n");
  assert!(err.is_empty());
}

#[test]
fn typescript_declarations() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec![
      "namespace Test { export enum Values { A, B, C } }",
      "Test.Values.A",
      "Test.Values.C",
      "interface MyInterface { prop: string; }",
      "type MyTypeAlias = string;",
    ]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  let expected_end_text = "undefined\n0\n2\nundefined\nundefined\n";
  assert_ends_with!(out, expected_end_text);
  assert!(err.is_empty());
}

#[test]
fn typescript_decorators() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec![
      "function dec(target) { target.prototype.test = () => 2; }",
      "@dec class Test {}",
      "new Test().test()",
    ]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "undefined\n[Function: Test]\n2\n");
  assert!(err.is_empty());
}

#[test]
fn eof() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["1 + 2"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "3\n");
  assert!(err.is_empty());
}

#[test]
fn strict() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec![
      "let a = {};",
      "Object.preventExtensions(a);",
      "a.c = 1;",
    ]),
    None,
    false,
  );
  assert_contains!(
    out,
    "Uncaught TypeError: Cannot add property c, object is not extensible"
  );
  assert!(err.is_empty());
}

#[test]
fn close_command() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["close()", "'ignored'"]),
    None,
    false,
  );

  assert_not_contains!(out, "ignored");
  assert!(err.is_empty());
}

#[test]
fn function() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["Deno.writeFileSync"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "[Function: writeFileSync]\n");
  assert!(err.is_empty());
}

#[test]
#[ignore]
fn multiline() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["(\n1 + 2\n)"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "3\n");
  assert!(err.is_empty());
}

#[test]
fn import() {
  let (out, _) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["import('./subdir/auto_print_hello.ts')"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_contains!(out, "hello!\n");
}

#[test]
fn import_declarations() {
  let (out, _) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["import './subdir/auto_print_hello.ts';"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_contains!(out, "hello!\n");
}

#[test]
fn exports_stripped() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["export default 5;", "export class Test {}"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_contains!(out, "5\n");
  assert!(err.is_empty());
}

#[test]
fn call_eval_unterminated() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["eval('{')"]),
    None,
    false,
  );
  assert_contains!(out, "Unexpected end of input");
  assert!(err.is_empty());
}

#[test]
fn unpaired_braces() {
  for right_brace in &[")", "]", "}"] {
    let (out, err) = util::run_and_collect_output(
      true,
      "repl",
      Some(vec![right_brace]),
      None,
      false,
    );
    assert_contains!(out, "Unexpected token");
    assert!(err.is_empty());
  }
}

#[test]
fn reference_error() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["not_a_variable"]),
    None,
    false,
  );
  assert_contains!(out, "not_a_variable is not defined");
  assert!(err.is_empty());
}

#[test]
fn syntax_error() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec![
      "syntax error",
      "2", // ensure it keeps accepting input after
    ]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "parse error: Expected ';', '}' or <eof> at 1:8\n2\n");
  assert!(err.is_empty());
}

#[test]
fn syntax_error_jsx() {
  // JSX is not supported in the REPL
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["const element = <div />;"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_contains!(out, "Unexpected token `>`");
  assert!(err.is_empty());
}

#[test]
fn type_error() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["console()"]),
    None,
    false,
  );
  assert_contains!(out, "console is not a function");
  assert!(err.is_empty());
}

#[test]
fn variable() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["var a = 123;", "a"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "undefined\n123\n");
  assert!(err.is_empty());
}

#[test]
fn lexical_scoped_variable() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["let a = 123;", "a"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "undefined\n123\n");
  assert!(err.is_empty());
}

#[test]
fn missing_deno_dir() {
  use std::fs::{read_dir, remove_dir_all};
  const DENO_DIR: &str = "nonexistent";
  let test_deno_dir = test_util::testdata_path().join(DENO_DIR);
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["1"]),
    Some(vec![
      ("DENO_DIR".to_owned(), DENO_DIR.to_owned()),
      ("NO_COLOR".to_owned(), "1".to_owned()),
    ]),
    false,
  );
  assert!(read_dir(&test_deno_dir).is_ok());
  remove_dir_all(&test_deno_dir).unwrap();
  assert_ends_with!(out, "1\n");
  assert!(err.is_empty());
}

#[test]
fn save_last_eval() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["1", "_"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "1\n1\n");
  assert!(err.is_empty());
}

#[test]
fn save_last_thrown() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["throw 1", "_error"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(out, "Uncaught 1\n1\n");
  assert!(err.is_empty());
}

#[test]
fn assign_underscore() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["_ = 1", "2", "_"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  assert_ends_with!(
    out,
    "Last evaluation result is no longer saved to _.\n1\n2\n1\n"
  );
  assert!(err.is_empty());
}

#[test]
fn assign_underscore_error() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec!["_error = 1", "throw 2", "_error"]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );
  println!("{}", out);
  assert_ends_with!(
    out,
    "Last thrown error is no longer saved to _error.\n1\nUncaught 2\n1\n"
  );
  assert!(err.is_empty());
}

#[test]
fn custom_inspect() {
  let (out, err) = util::run_and_collect_output(
    true,
    "repl",
    Some(vec![
      r#"const o = {
        [Symbol.for("Deno.customInspect")]() {
          throw new Error('Oops custom inspect error');
        },
      };"#,
      "o",
    ]),
    Some(vec![("NO_COLOR".to_owned(), "1".to_owned())]),
    false,
  );

  assert_contains!(out, "Oops custom inspect error");
  assert!(err.is_empty());
}

#[test]
fn eval_flag_valid_input() {
  let (out, err) = util::run_and_collect_output_with_args(
    true,
    vec!["repl", "--eval", "const t = 10;"],
    Some(vec!["t * 500;"]),
    None,
    false,
  );
  assert_contains!(out, "5000");
  assert!(err.is_empty());
}

#[test]
fn eval_flag_parse_error() {
  let (out, err) = util::run_and_collect_output_with_args(
    true,
    vec!["repl", "--eval", "const %"],
    Some(vec!["250 * 10"]),
    None,
    false,
  );
  assert_contains!(
    test_util::strip_ansi_codes(&out),
    "error in --eval flag. parse error: Unexpected token `%`."
  );
  assert_contains!(out, "2500"); // should not prevent input
  assert!(err.is_empty());
}

#[test]
fn eval_flag_runtime_error() {
  let (out, err) = util::run_and_collect_output_with_args(
    true,
    vec!["repl", "--eval", "throw new Error('Testing')"],
    Some(vec!["250 * 10"]),
    None,
    false,
  );
  assert_contains!(out, "error in --eval flag. Uncaught Error: Testing");
  assert_contains!(out, "2500"); // should not prevent input
  assert!(err.is_empty());
}

#[test]
fn eval_file_flag_valid_input() {
  let (out, err) = util::run_and_collect_output_with_args(
    true,
    vec!["repl", "--eval-file=./001_hello.js"],
    None,
    None,
    false,
  );
  assert_contains!(out, "Hello World");
  assert!(err.is_empty());
}

#[test]
fn eval_file_flag_call_defined_function() {
  let (out, err) = util::run_and_collect_output_with_args(
    true,
    vec!["repl", "--eval-file=./tsc/d.ts"],
    Some(vec!["v4()"]),
    None,
    false,
  );
  assert_contains!(out, "hello");
  assert!(err.is_empty());
}

#[test]
fn eval_file_flag_http_input() {
  let (out, err) = util::run_and_collect_output_with_args(
    true,
    vec!["repl", "--eval-file=http://127.0.0.1:4545/tsc/d.ts"],
    Some(vec!["v4()"]),
    None,
    true,
  );
  assert_contains!(out, "hello");
  assert!(err.contains("Download"));
}

#[test]
fn eval_file_flag_multiple_files() {
  let (out, err) = util::run_and_collect_output_with_args(
    true,
    vec!["repl", "--eval-file=http://127.0.0.1:4545/import_type.ts,./tsc/d.ts,http://127.0.0.1:4545/type_definitions/foo.js"],
    Some(vec!["b.method1=v4", "b.method1()+foo.toUpperCase()"]),
    None,
    true,
  );
  assert_contains!(out, "helloFOO");
  assert_contains!(err, "Download");
}

#[test]
fn pty_clear_function() {
  util::with_pty(&["repl"], |mut console| {
    console.write_line("console.log('hello');");
    console.write_line("clear();");
    console.write_line("const clear = 1234 + 2000;");
    console.write_line("clear;");
    console.write_line("close();");

    let output = console.read_all_output();
    if cfg!(windows) {
      // Windows will overwrite what's in the console buffer before
      // we read from it. It contains this string repeated many times
      // to clear the screen.
      assert_contains!(output, "\r\n\u{1b}[K\r\n\u{1b}[K\r\n\u{1b}[K");
    } else {
      assert_contains!(output, "hello");
      assert_contains!(output, "[1;1H");
    }
    assert_contains!(output, "undefined");
    assert_contains!(output, "const clear = 1234 + 2000;");
    assert_contains!(output, "3234");
  });
}

#[test]
fn pty_tab_handler() {
  // If the last character is **not** whitespace, we show the completions
  util::with_pty(&["repl"], |mut console| {
    console.write_line("a\t\t");
    console.write_line("close();");
    let output = console.read_all_output();
    assert_contains!(output, "addEventListener");
    assert_contains!(output, "alert");
    assert_contains!(output, "atob");
  });
  // If the last character is whitespace, we just insert a tab
  util::with_pty(&["repl"], |mut console| {
    console.write_line("a; \t\t"); // last character is whitespace
    console.write_line("close();");
    let output = console.read_all_output();
    assert_not_contains!(output, "addEventListener");
    assert_not_contains!(output, "alert");
    assert_not_contains!(output, "atob");
  });
}