Mercurial > vim
diff src/testdir/test_expr.vim @ 28718:723c7d940cba
patch 8.2.4883: string interpolation only works in heredoc
Commit: https://github.com/vim/vim/commit/2eaef106e4a7fc9dc74a7e672b5f550ec1f9786e
Author: LemonBoy <thatlemon@gmail.com>
Date: Fri May 6 13:14:50 2022 +0100
patch 8.2.4883: string interpolation only works in heredoc
Problem: String interpolation only works in heredoc.
Solution: Support interpolated strings. Use syntax for heredoc consistent
with strings, similar to C#. (closes #10327)
| author | Bram Moolenaar <Bram@vim.org> |
|---|---|
| date | Fri, 06 May 2022 14:15:03 +0200 |
| parents | d10d5cc8e657 |
| children | 3626ca6a20ea |
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--- a/src/testdir/test_expr.vim +++ b/src/testdir/test_expr.vim @@ -890,4 +890,60 @@ func Test_float_compare() call v9.CheckLegacyAndVim9Success(lines) endfunc +func Test_string_interp() + let lines =<< trim END + call assert_equal('', $"") + call assert_equal('foobar', $"foobar") + #" Escaping rules. + call assert_equal('"foo"{bar}', $"\"foo\"{{bar}}") + call assert_equal('"foo"{bar}', $'"foo"{{bar}}') + call assert_equal('foobar', $"{\"foo\"}" .. $'{''bar''}') + #" Whitespace before/after the expression. + call assert_equal('3', $"{ 1 + 2 }") + #" String conversion. + call assert_equal('hello from ' .. v:version, $"hello from {v:version}") + call assert_equal('hello from ' .. v:version, $'hello from {v:version}') + #" Paper over a small difference between VimScript behaviour. + call assert_equal(string(v:true), $"{v:true}") + call assert_equal('(1+1=2)', $"(1+1={1 + 1})") + #" Hex-escaped opening brace: char2nr('{') == 0x7b + call assert_equal('esc123ape', $"esc\x7b123}ape") + call assert_equal('me{}me', $"me{\x7b}\x7dme") + VAR var1 = "sun" + VAR var2 = "shine" + call assert_equal('sunshine', $"{var1}{var2}") + call assert_equal('sunsunsun', $"{var1->repeat(3)}") + #" Multibyte strings. + call assert_equal('say ハロー・ワールド', $"say {'ハロー・ワールド'}") + #" Nested. + call assert_equal('foobarbaz', $"foo{$\"{'bar'}\"}baz") + #" Do not evaluate blocks when the expr is skipped. + VAR tmp = 0 + if v:false + echo "${ LET tmp += 1 }" + endif + call assert_equal(0, tmp) + + #" Stray closing brace. + call assert_fails('echo $"moo}"', 'E1278:') + #" Undefined variable in expansion. + call assert_fails('echo $"{moo}"', 'E121:') + #" Empty blocks are rejected. + call assert_fails('echo $"{}"', 'E15:') + call assert_fails('echo $"{ }"', 'E15:') + END + call v9.CheckLegacyAndVim9Success(lines) + + let lines =<< trim END + call assert_equal('5', $"{({x -> x + 1})(4)}") + END + call v9.CheckLegacySuccess(lines) + + let lines =<< trim END + call assert_equal('5', $"{((x) => x + 1)(4)}") + call assert_fails('echo $"{ # foo }"', 'E1279:') + END + call v9.CheckDefAndScriptSuccess(lines) +endfunc + " vim: shiftwidth=2 sts=2 expandtab