diff options
Diffstat (limited to 'src/testdir/test_trycatch.vim')
| -rw-r--r-- | src/testdir/test_trycatch.vim | 2228 |
1 files changed, 2228 insertions, 0 deletions
diff --git a/src/testdir/test_trycatch.vim b/src/testdir/test_trycatch.vim new file mode 100644 index 0000000..b5ad14c --- /dev/null +++ b/src/testdir/test_trycatch.vim @@ -0,0 +1,2228 @@ +" Test try-catch-finally exception handling +" Most of this was formerly in test49. + +source check.vim +source shared.vim + +"------------------------------------------------------------------------------- +" Test environment {{{1 +"------------------------------------------------------------------------------- + +com! XpathINIT let g:Xpath = '' +com! -nargs=1 -bar Xpath let g:Xpath = g:Xpath . <args> + +" Test 25: Executing :finally clauses on normal control flow {{{1 +" +" Control flow in a :try conditional should always fall through to its +" :finally clause. A :finally clause of a :try conditional inside an +" inactive conditional should never be executed. +"------------------------------------------------------------------------------- + +func T25_F() + let loops = 3 + while loops > 0 + Xpath 'a' . loops + if loops >= 2 + try + Xpath 'b' . loops + if loops == 2 + try + Xpath 'c' . loops + finally + Xpath 'd' . loops + endtry + endif + finally + Xpath 'e' . loops + if loops == 2 + try + Xpath 'f' . loops + final + Xpath 'g' . loops + endtry + endif + endtry + endif + Xpath 'h' . loops + let loops = loops - 1 + endwhile + Xpath 'i' +endfunc + +" Also try using "fina" and "final" and "finall" as abbraviations. +func T25_G() + if 1 + try + Xpath 'A' + call T25_F() + Xpath 'B' + fina + Xpath 'C' + endtry + else + try + Xpath 'D' + finall + Xpath 'E' + endtry + endif +endfunc + +func Test_finally() + XpathINIT + call T25_G() + call assert_equal('Aa3b3e3h3a2b2c2d2e2f2g2h2a1h1iBC', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 26: Executing :finally clauses after :continue or :break {{{1 +" +" For a :continue or :break dynamically enclosed in a :try/:endtry +" region inside the next surrounding :while/:endwhile, if the +" :continue/:break is before the :finally, the :finally clause is +" executed first. If the :continue/:break is after the :finally, the +" :finally clause is broken (like an :if/:endif region). +"------------------------------------------------------------------------------- + +func T26_F() + try + let loops = 3 + while loops > 0 + try + try + if loops == 2 + Xpath 'a' . loops + let loops = loops - 1 + continue + elseif loops == 1 + Xpath 'b' . loops + break + finish + endif + Xpath 'c' . loops + endtry + finally + Xpath 'd' . loops + endtry + Xpath 'e' . loops + let loops = loops - 1 + endwhile + Xpath 'f' + finally + Xpath 'g' + let loops = 3 + while loops > 0 + try + finally + try + if loops == 2 + Xpath 'h' . loops + let loops = loops - 1 + continue + elseif loops == 1 + Xpath 'i' . loops + break + finish + endif + endtry + Xpath 'j' . loops + endtry + Xpath 'k' . loops + let loops = loops - 1 + endwhile + Xpath 'l' + endtry + Xpath 'm' +endfunc + +func Test_finally_after_continue() + XpathINIT + call T26_F() + call assert_equal('c3d3e3a2d1b1d1fgj3k3h2i1lm', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 32: Remembering the :return value on :finally {{{1 +" +" If a :finally clause is executed due to a :return specifying +" a value, this is the value visible to the caller if not overwritten +" by a new :return in the :finally clause. A :return without a value +" in the :finally clause overwrites with value 0. +"------------------------------------------------------------------------------- + +func T32_F() + try + Xpath 'a' + try + Xpath 'b' + return "ABCD" + Xpath 'c' + finally + Xpath 'd' + endtry + Xpath 'e' + finally + Xpath 'f' + endtry + Xpath 'g' +endfunc + +func T32_G() + try + Xpath 'h' + return 8 + Xpath 'i' + finally + Xpath 'j' + return 16 + strlen(T32_F()) + Xpath 'k' + endtry + Xpath 'l' +endfunc + +func T32_H() + try + Xpath 'm' + return 32 + Xpath 'n' + finally + Xpath 'o' + return + Xpath 'p' + endtry + Xpath 'q' +endfunc + +func T32_I() + try + Xpath 'r' + finally + Xpath 's' + return T32_G() + T32_H() + 64 + Xpath 't' + endtry + Xpath 'u' +endfunc + +func Test_finally_return() + XpathINIT + call assert_equal(84, T32_I()) + call assert_equal('rshjabdfmo', g:Xpath) +endfunc + +"------------------------------------------------------------------------------- +" Test 33: :return under :execute or user command and :finally {{{1 +" +" A :return command may be executed under an ":execute" or from +" a user command. Executing of :finally clauses and passing through +" the return code works also then. +"------------------------------------------------------------------------------- + +func T33_F() + try + RETURN 10 + Xpath 'a' + finally + Xpath 'b' + endtry + Xpath 'c' +endfunc + +func T33_G() + try + RETURN 20 + Xpath 'd' + finally + Xpath 'e' + RETURN 30 + Xpath 'f' + endtry + Xpath 'g' +endfunc + +func T33_H() + try + execute "try | return 40 | finally | return 50 | endtry" + Xpath 'h' + finally + Xpath 'i' + endtry + Xpath 'j' +endfunc + +func T33_I() + try + execute "try | return 60 | finally | return 70 | endtry" + Xpath 'k' + finally + Xpath 'l' + execute "try | return 80 | finally | return 90 | endtry" + Xpath 'm' + endtry + Xpath 'n' +endfunc + +func T33_J() + try + RETURN 100 + Xpath 'o' + finally + Xpath 'p' + return + Xpath 'q' + endtry + Xpath 'r' +endfunc + +func T33_K() + try + execute "try | return 110 | finally | return 120 | endtry" + Xpath 's' + finally + Xpath 't' + execute "try | return 130 | finally | return | endtry" + Xpath 'u' + endtry + Xpath 'v' +endfunc + +func T33_L() + try + return + Xpath 'w' + finally + Xpath 'x' + RETURN 140 + Xpath 'y' + endtry + Xpath 'z' +endfunc + +func T33_M() + try + return + Xpath 'A' + finally + Xpath 'B' + execute "try | return 150 | finally | return 160 | endtry" + Xpath 'C' + endtry + Xpath 'D' +endfunc + +func T33_N() + RETURN 170 +endfunc + +func T33_O() + execute "try | return 180 | finally | return 190 | endtry" +endfunc + +func Test_finally_cmd_return() + command! -nargs=? RETURN + \ try | return <args> | finally | return <args> * 2 | endtry + XpathINIT + call assert_equal(20, T33_F()) + call assert_equal(60, T33_G()) + call assert_equal(50, T33_H()) + call assert_equal(90, T33_I()) + call assert_equal(0, T33_J()) + call assert_equal(0, T33_K()) + call assert_equal(280, T33_L()) + call assert_equal(160, T33_M()) + call assert_equal(340, T33_N()) + call assert_equal(190, T33_O()) + call assert_equal('beilptxB', g:Xpath) + delcommand RETURN +endfunc + + +"------------------------------------------------------------------------------- +" Test 41: Skipped :throw finding next command {{{1 +" +" A :throw in an inactive conditional must not hide a following +" command. +"------------------------------------------------------------------------------- + +func T41_F() + Xpath 'a' + if 0 | throw 'never' | endif | Xpath 'b' + Xpath 'c' +endfunc + +func T41_G() + Xpath 'd' + while 0 | throw 'never' | endwhile | Xpath 'e' + Xpath 'f' +endfunc + +func T41_H() + Xpath 'g' + if 0 | try | throw 'never' | endtry | endif | Xpath 'h' + Xpath 'i' +endfunc + +func Test_throw_inactive_cond() + XpathINIT + try + Xpath 'j' + call T41_F() + Xpath 'k' + catch /.*/ + Xpath 'l' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + Xpath 'm' + call T41_G() + Xpath 'n' + catch /.*/ + Xpath 'o' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + Xpath 'p' + call T41_H() + Xpath 'q' + catch /.*/ + Xpath 'r' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + call assert_equal('jabckmdefnpghiq', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 42: Catching number and string exceptions {{{1 +" +" When a number is thrown, it is converted to a string exception. +" Numbers and strings may be caught by specifying a regular exception +" as argument to the :catch command. +"------------------------------------------------------------------------------- + + +func T42_F() + try + + try + Xpath 'a' + throw 4711 + Xpath 'b' + catch /4711/ + Xpath 'c' + endtry + + try + Xpath 'd' + throw 4711 + Xpath 'e' + catch /^4711$/ + Xpath 'f' + endtry + + try + Xpath 'g' + throw 4711 + Xpath 'h' + catch /\d/ + Xpath 'i' + endtry + + try + Xpath 'j' + throw 4711 + Xpath 'k' + catch /^\d\+$/ + Xpath 'l' + endtry + + try + Xpath 'm' + throw "arrgh" + Xpath 'n' + catch /arrgh/ + Xpath 'o' + endtry + + try + Xpath 'p' + throw "arrgh" + Xpath 'q' + catch /^arrgh$/ + Xpath 'r' + endtry + + try + Xpath 's' + throw "arrgh" + Xpath 't' + catch /\l/ + Xpath 'u' + endtry + + try + Xpath 'v' + throw "arrgh" + Xpath 'w' + catch /^\l\+$/ + Xpath 'x' + endtry + + try + try + Xpath 'y' + throw "ARRGH" + Xpath 'z' + catch /^arrgh$/ + Xpath 'A' + endtry + catch /^\carrgh$/ + Xpath 'B' + endtry + + try + Xpath 'C' + throw "" + Xpath 'D' + catch /^$/ + Xpath 'E' + endtry + + catch /.*/ + Xpath 'F' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry +endfunc + +func Test_catch_number_string() + XpathINIT + call T42_F() + call assert_equal('acdfgijlmoprsuvxyBCE', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 43: Selecting the correct :catch clause {{{1 +" +" When an exception is thrown and there are multiple :catch clauses, +" the first matching one is taken. +"------------------------------------------------------------------------------- + +func T43_F() + let loops = 3 + while loops > 0 + try + if loops == 3 + Xpath 'a' . loops + throw "a" + Xpath 'b' . loops + elseif loops == 2 + Xpath 'c' . loops + throw "ab" + Xpath 'd' . loops + elseif loops == 1 + Xpath 'e' . loops + throw "abc" + Xpath 'f' . loops + endif + catch /abc/ + Xpath 'g' . loops + catch /ab/ + Xpath 'h' . loops + catch /.*/ + Xpath 'i' . loops + catch /a/ + Xpath 'j' . loops + endtry + + let loops = loops - 1 + endwhile + Xpath 'k' +endfunc + +func Test_multi_catch() + XpathINIT + call T43_F() + call assert_equal('a3i3c2h2e1g1k', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 44: Missing or empty :catch patterns {{{1 +" +" A missing or empty :catch pattern means the same as /.*/, that is, +" catches everything. To catch only empty exceptions, /^$/ must be +" used. A :catch with missing, empty, or /.*/ argument also works +" when followed by another command separated by a bar on the same +" line. :catch patterns cannot be specified between ||. But other +" pattern separators can be used instead of //. +"------------------------------------------------------------------------------- + +func T44_F() + try + try + Xpath 'a' + throw "" + catch /^$/ + Xpath 'b' + endtry + + try + Xpath 'c' + throw "" + catch /.*/ + Xpath 'd' + endtry + + try + Xpath 'e' + throw "" + catch // + Xpath 'f' + endtry + + try + Xpath 'g' + throw "" + catch + Xpath 'h' + endtry + + try + Xpath 'i' + throw "oops" + catch /^$/ + Xpath 'j' + catch /.*/ + Xpath 'k' + endtry + + try + Xpath 'l' + throw "arrgh" + catch /^$/ + Xpath 'm' + catch // + Xpath 'n' + endtry + + try + Xpath 'o' + throw "brrr" + catch /^$/ + Xpath 'p' + catch + Xpath 'q' + endtry + + try | Xpath 'r' | throw "x" | catch /.*/ | Xpath 's' | endtry + + try | Xpath 't' | throw "y" | catch // | Xpath 'u' | endtry + + while 1 + try + let caught = 0 + let v:errmsg = "" + " Extra try level: if ":catch" without arguments below raises + " a syntax error because it misinterprets the "Xpath" as a pattern, + " let it be caught by the ":catch /.*/" below. + try + try | Xpath 'v' | throw "z" | catch | Xpath 'w' | : + endtry + endtry + catch /.*/ + let caught = 1 + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + finally + if $VIMNOERRTHROW && v:errmsg != "" + call assert_report(v:errmsg) + endif + if caught || $VIMNOERRTHROW && v:errmsg != "" + Xpath 'x' + endif + break " discard error for $VIMNOERRTHROW + endtry + endwhile + + let cologne = 4711 + try + try + Xpath 'y' + throw "throw cologne" + " Next lines catches all and throws 4711: + catch |throw cologne| + Xpath 'z' + endtry + catch /4711/ + Xpath 'A' + endtry + + try + Xpath 'B' + throw "plus" + catch +plus+ + Xpath 'C' + endtry + + Xpath 'D' + catch /.*/ + Xpath 'E' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry +endfunc + +func Test_empty_catch() + XpathINIT + call T44_F() + call assert_equal('abcdefghiklnoqrstuvwyABCD', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 45: Catching exceptions from nested :try blocks {{{1 +" +" When :try blocks are nested, an exception is caught by the innermost +" try conditional that has a matching :catch clause. +"------------------------------------------------------------------------------- + +func T45_F() + let loops = 3 + while loops > 0 + try + try + try + try + if loops == 3 + Xpath 'a' . loops + throw "a" + Xpath 'b' . loops + elseif loops == 2 + Xpath 'c' . loops + throw "ab" + Xpath 'd' . loops + elseif loops == 1 + Xpath 'e' . loops + throw "abc" + Xpath 'f' . loops + endif + catch /abc/ + Xpath 'g' . loops + endtry + catch /ab/ + Xpath 'h' . loops + endtry + catch /.*/ + Xpath 'i' . loops + endtry + catch /a/ + Xpath 'j' . loops + endtry + + let loops = loops - 1 + endwhile + Xpath 'k' +endfunc + +func Test_catch_from_nested_try() + XpathINIT + call T45_F() + call assert_equal('a3i3c2h2e1g1k', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 46: Executing :finally after a :throw in nested :try {{{1 +" +" When an exception is thrown from within nested :try blocks, the +" :finally clauses of the non-catching try conditionals should be +" executed before the matching :catch of the next surrounding :try +" gets the control. If this also has a :finally clause, it is +" executed afterwards. +"------------------------------------------------------------------------------- + +func T46_F() + let sum = 0 + + try + Xpath 'a' + try + Xpath 'b' + try + Xpath 'c' + try + Xpath 'd' + throw "ABC" + Xpath 'e' + catch /xyz/ + Xpath 'f' + finally + Xpath 'g' + if sum != 0 + Xpath 'h' + endif + let sum = sum + 1 + endtry + Xpath 'i' + catch /123/ + Xpath 'j' + catch /321/ + Xpath 'k' + finally + Xpath 'l' + if sum != 1 + Xpath 'm' + endif + let sum = sum + 2 + endtry + Xpath 'n' + finally + Xpath 'o' + if sum != 3 + Xpath 'p' + endif + let sum = sum + 4 + endtry + Xpath 'q' + catch /ABC/ + Xpath 'r' + if sum != 7 + Xpath 's' + endif + let sum = sum + 8 + finally + Xpath 't' + if sum != 15 + Xpath 'u' + endif + let sum = sum + 16 + endtry + Xpath 'v' + if sum != 31 + Xpath 'w' + endif +endfunc + +func Test_finally_after_throw() + XpathINIT + call T46_F() + call assert_equal('abcdglortv', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 47: Throwing exceptions from a :catch clause {{{1 +" +" When an exception is thrown from a :catch clause, it should not be +" caught by a :catch of the same :try conditional. After executing +" the :finally clause (if present), surrounding try conditionals +" should be checked for a matching :catch. +"------------------------------------------------------------------------------- + +func T47_F() + Xpath 'a' + try + Xpath 'b' + try + Xpath 'c' + try + Xpath 'd' + throw "x1" + Xpath 'e' + catch /x1/ + Xpath 'f' + try + Xpath 'g' + throw "x2" + Xpath 'h' + catch /x1/ + Xpath 'i' + catch /x2/ + Xpath 'j' + try + Xpath 'k' + throw "x3" + Xpath 'l' + catch /x1/ + Xpath 'm' + catch /x2/ + Xpath 'n' + finally + Xpath 'o' + endtry + Xpath 'p' + catch /x3/ + Xpath 'q' + endtry + Xpath 'r' + catch /x1/ + Xpath 's' + catch /x2/ + Xpath 't' + catch /x3/ + Xpath 'u' + finally + Xpath 'v' + endtry + Xpath 'w' + catch /x1/ + Xpath 'x' + catch /x2/ + Xpath 'y' + catch /x3/ + Xpath 'z' + endtry + Xpath 'A' + catch /.*/ + Xpath 'B' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + Xpath 'C' +endfunc + +func Test_throw_from_catch() + XpathINIT + call T47_F() + call assert_equal('abcdfgjkovzAC', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 48: Throwing exceptions from a :finally clause {{{1 +" +" When an exception is thrown from a :finally clause, it should not be +" caught by a :catch of the same :try conditional. Surrounding try +" conditionals should be checked for a matching :catch. A previously +" thrown exception is discarded. +"------------------------------------------------------------------------------- + +func T48_F() + try + + try + try + Xpath 'a' + catch /x1/ + Xpath 'b' + finally + Xpath 'c' + throw "x1" + Xpath 'd' + endtry + Xpath 'e' + catch /x1/ + Xpath 'f' + endtry + Xpath 'g' + + try + try + Xpath 'h' + throw "x2" + Xpath 'i' + catch /x2/ + Xpath 'j' + catch /x3/ + Xpath 'k' + finally + Xpath 'l' + throw "x3" + Xpath 'm' + endtry + Xpath 'n' + catch /x2/ + Xpath 'o' + catch /x3/ + Xpath 'p' + endtry + Xpath 'q' + + try + try + try + Xpath 'r' + throw "x4" + Xpath 's' + catch /x5/ + Xpath 't' + finally + Xpath 'u' + throw "x5" " discards 'x4' + Xpath 'v' + endtry + Xpath 'w' + catch /x4/ + Xpath 'x' + finally + Xpath 'y' + endtry + Xpath 'z' + catch /x5/ + Xpath 'A' + endtry + Xpath 'B' + + catch /.*/ + Xpath 'C' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + Xpath 'D' +endfunc + +func Test_throw_from_finally() + XpathINIT + call T48_F() + call assert_equal('acfghjlpqruyABD', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 51: Throwing exceptions across :execute and user commands {{{1 +" +" A :throw command may be executed under an ":execute" or from +" a user command. +"------------------------------------------------------------------------------- + +func T51_F() + command! -nargs=? THROW1 throw <args> | throw 1 + command! -nargs=? THROW2 try | throw <args> | endtry | throw 2 + command! -nargs=? THROW3 try | throw 3 | catch /3/ | throw <args> | endtry + command! -nargs=? THROW4 try | throw 4 | finally | throw <args> | endtry + + try + + try + try + Xpath 'a' + THROW1 "A" + catch /A/ + Xpath 'b' + endtry + catch /1/ + Xpath 'c' + endtry + + try + try + Xpath 'd' + THROW2 "B" + catch /B/ + Xpath 'e' + endtry + catch /2/ + Xpath 'f' + endtry + + try + try + Xpath 'g' + THROW3 "C" + catch /C/ + Xpath 'h' + endtry + catch /3/ + Xpath 'i' + endtry + + try + try + Xpath 'j' + THROW4 "D" + catch /D/ + Xpath 'k' + endtry + catch /4/ + Xpath 'l' + endtry + + try + try + Xpath 'm' + execute 'throw "E" | throw 5' + catch /E/ + Xpath 'n' + endtry + catch /5/ + Xpath 'o' + endtry + + try + try + Xpath 'p' + execute 'try | throw "F" | endtry | throw 6' + catch /F/ + Xpath 'q' + endtry + catch /6/ + Xpath 'r' + endtry + + try + try + Xpath 's' + execute'try | throw 7 | catch /7/ | throw "G" | endtry' + catch /G/ + Xpath 't' + endtry + catch /7/ + Xpath 'u' + endtry + + try + try + Xpath 'v' + execute 'try | throw 8 | finally | throw "H" | endtry' + catch /H/ + Xpath 'w' + endtry + catch /8/ + Xpath 'x' + endtry + + catch /.*/ + Xpath 'y' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + Xpath 'z' + + delcommand THROW1 + delcommand THROW2 + delcommand THROW3 + delcommand THROW4 +endfunc + +func Test_throw_across_commands() + XpathINIT + call T51_F() + call assert_equal('abdeghjkmnpqstvwz', g:Xpath) +endfunc + + + +"------------------------------------------------------------------------------- +" Test 69: :throw across :if, :elseif, :while {{{1 +" +" On an :if, :elseif, or :while command, an exception might be thrown +" during evaluation of the expression to test. The exception can be +" caught by the script. +"------------------------------------------------------------------------------- + +func T69_throw(x) + Xpath 'x' + throw a:x +endfunc + +func Test_throw_ifelsewhile() + XpathINIT + + try + try + Xpath 'a' + if 111 == T69_throw("if") + 111 + Xpath 'b' + else + Xpath 'c' + endif + Xpath 'd' + catch /^if$/ + Xpath 'e' + catch /.*/ + Xpath 'f' + call assert_report("if: " . v:exception . " in " . v:throwpoint) + endtry + + try + Xpath 'g' + if v:false + Xpath 'h' + elseif 222 == T69_throw("elseif") + 222 + Xpath 'i' + else + Xpath 'j' + endif + Xpath 'k' + catch /^elseif$/ + Xpath 'l' + catch /.*/ + Xpath 'm' + call assert_report("elseif: " . v:exception . " in " . v:throwpoint) + endtry + + try + Xpath 'n' + while 333 == T69_throw("while") + 333 + Xpath 'o' + break + endwhile + Xpath 'p' + catch /^while$/ + Xpath 'q' + catch /.*/ + Xpath 'r' + call assert_report("while: " .. v:exception .. " in " .. v:throwpoint) + endtry + catch /^0$/ " default return value + Xpath 's' + call assert_report(v:throwpoint) + catch /.*/ + call assert_report(v:exception .. " in " .. v:throwpoint) + Xpath 't' + endtry + + call assert_equal('axegxlnxq', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 70: :throw across :return or :throw {{{1 +" +" On a :return or :throw command, an exception might be thrown during +" evaluation of the expression to return or throw, respectively. The +" exception can be caught by the script. +"------------------------------------------------------------------------------- + +let T70_taken = "" + +func T70_throw(x, n) + let g:T70_taken = g:T70_taken . "T" . a:n + throw a:x +endfunc + +func T70_F(x, y, n) + let g:T70_taken = g:T70_taken . "F" . a:n + return a:x + T70_throw(a:y, a:n) +endfunc + +func T70_G(x, y, n) + let g:T70_taken = g:T70_taken . "G" . a:n + throw a:x . T70_throw(a:y, a:n) + return a:x +endfunc + +func Test_throwreturn() + XpathINIT + + try + try + Xpath 'a' + call T70_F(4711, "return", 1) + Xpath 'b' + catch /^return$/ + Xpath 'c' + catch /.*/ + Xpath 'd' + call assert_report("return: " .. v:exception .. " in " .. v:throwpoint) + endtry + + try + Xpath 'e' + let var = T70_F(4712, "return-var", 2) + Xpath 'f' + catch /^return-var$/ + Xpath 'g' + catch /.*/ + Xpath 'h' + call assert_report("return-var: " . v:exception . " in " . v:throwpoint) + finally + unlet! var + endtry + + try + Xpath 'i' + throw "except1" . T70_throw("throw1", 3) + Xpath 'j' + catch /^except1/ + Xpath 'k' + catch /^throw1$/ + Xpath 'l' + catch /.*/ + Xpath 'm' + call assert_report("throw1: " .. v:exception .. " in " .. v:throwpoint) + endtry + + try + Xpath 'n' + call T70_G("except2", "throw2", 4) + Xpath 'o' + catch /^except2/ + Xpath 'p' + catch /^throw2$/ + Xpath 'q' + catch /.*/ + Xpath 'r' + call assert_report("throw2: " .. v:exception .. " in " .. v:throwpoint) + endtry + + try + Xpath 's' + let var = T70_G("except3", "throw3", 5) + Xpath 't' + catch /^except3/ + Xpath 'u' + catch /^throw3$/ + Xpath 'v' + catch /.*/ + Xpath 'w' + call assert_report("throw3: " .. v:exception .. " in " .. v:throwpoint) + finally + unlet! var + endtry + + call assert_equal('F1T1F2T2T3G4T4G5T5', g:T70_taken) + Xpath 'x' + catch /^0$/ " default return value + Xpath 'y' + call assert_report(v:throwpoint) + catch /.*/ + Xpath 'z' + call assert_report('Caught' .. v:exception .. ' in ' .. v:throwpoint) + endtry + + call assert_equal('acegilnqsvx', g:Xpath) +endfunc + +"------------------------------------------------------------------------------- +" Test 71: :throw across :echo variants and :execute {{{1 +" +" On an :echo, :echon, :echomsg, :echoerr, or :execute command, an +" exception might be thrown during evaluation of the arguments to +" be displayed or executed as a command, respectively. Any following +" arguments are not evaluated, then. The exception can be caught by +" the script. +"------------------------------------------------------------------------------- + +let T71_taken = "" + +func T71_throw(x, n) + let g:T71_taken = g:T71_taken . "T" . a:n + throw a:x +endfunc + +func T71_F(n) + let g:T71_taken = g:T71_taken . "F" . a:n + return "F" . a:n +endfunc + +func Test_throw_echo() + XpathINIT + + try + try + Xpath 'a' + echo 'echo ' . T71_throw("echo-except", 1) . T71_F(1) + Xpath 'b' + catch /^echo-except$/ + Xpath 'c' + catch /.*/ + Xpath 'd' + call assert_report("echo: " .. v:exception .. " in " .. v:throwpoint) + endtry + + try + Xpath 'e' + echon "echon " . T71_throw("echon-except", 2) . T71_F(2) + Xpath 'f' + catch /^echon-except$/ + Xpath 'g' + catch /.*/ + Xpath 'h' + call assert_report('echon: ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + Xpath 'i' + echomsg "echomsg " . T71_throw("echomsg-except", 3) . T71_F(3) + Xpath 'j' + catch /^echomsg-except$/ + Xpath 'k' + catch /.*/ + Xpath 'l' + call assert_report('echomsg: ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + Xpath 'm' + echoerr "echoerr " . T71_throw("echoerr-except", 4) . T71_F(4) + Xpath 'n' + catch /^echoerr-except$/ + Xpath 'o' + catch /Vim/ + Xpath 'p' + catch /echoerr/ + Xpath 'q' + catch /.*/ + Xpath 'r' + call assert_report('echoerr: ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + Xpath 's' + execute "echo 'execute " . T71_throw("execute-except", 5) . T71_F(5) "'" + Xpath 't' + catch /^execute-except$/ + Xpath 'u' + catch /.*/ + Xpath 'v' + call assert_report('execute: ' . v:exception . ' in ' . v:throwpoint) + endtry + + call assert_equal('T1T2T3T4T5', g:T71_taken) + Xpath 'w' + catch /^0$/ " default return value + Xpath 'x' + call assert_report(v:throwpoint) + catch /.*/ + Xpath 'y' + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + call assert_equal('acegikmosuw', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 72: :throw across :let or :unlet {{{1 +" +" On a :let command, an exception might be thrown during evaluation +" of the expression to assign. On an :let or :unlet command, the +" evaluation of the name of the variable to be assigned or list or +" deleted, respectively, may throw an exception. Any following +" arguments are not evaluated, then. The exception can be caught by +" the script. +"------------------------------------------------------------------------------- + +let throwcount = 0 + +func T72_throw(x) + let g:throwcount = g:throwcount + 1 + throw a:x +endfunc + +let T72_addpath = '' + +func T72_addpath(p) + let g:T72_addpath = g:T72_addpath . a:p +endfunc + +func Test_throw_let() + XpathINIT + + try + try + let $VAR = 'old_value' + Xpath 'a' + let $VAR = 'let(' . T72_throw('var') . ')' + Xpath 'b' + catch /^var$/ + Xpath 'c' + finally + call assert_equal('old_value', $VAR) + endtry + + try + let @a = 'old_value' + Xpath 'd' + let @a = 'let(' . T72_throw('reg') . ')' + Xpath 'e' + catch /^reg$/ + try + Xpath 'f' + let @A = 'let(' . T72_throw('REG') . ')' + Xpath 'g' + catch /^REG$/ + Xpath 'h' + endtry + finally + call assert_equal('old_value', @a) + call assert_equal('old_value', @A) + endtry + + try + let saved_gpath = &g:path + let saved_lpath = &l:path + Xpath 'i' + let &path = 'let(' . T72_throw('opt') . ')' + Xpath 'j' + catch /^opt$/ + try + Xpath 'k' + let &g:path = 'let(' . T72_throw('gopt') . ')' + Xpath 'l' + catch /^gopt$/ + try + Xpath 'm' + let &l:path = 'let(' . T72_throw('lopt') . ')' + Xpath 'n' + catch /^lopt$/ + Xpath 'o' + endtry + endtry + finally + call assert_equal(saved_gpath, &g:path) + call assert_equal(saved_lpath, &l:path) + let &g:path = saved_gpath + let &l:path = saved_lpath + endtry + + unlet! var1 var2 var3 + + try + Xpath 'p' + let var1 = 'let(' . T72_throw('var1') . ')' + Xpath 'q' + catch /^var1$/ + Xpath 'r' + finally + call assert_true(!exists('var1')) + endtry + + try + let var2 = 'old_value' + Xpath 's' + let var2 = 'let(' . T72_throw('var2'). ')' + Xpath 't' + catch /^var2$/ + Xpath 'u' + finally + call assert_equal('old_value', var2) + endtry + + try + Xpath 'v' + let var{T72_throw('var3')} = 4711 + Xpath 'w' + catch /^var3$/ + Xpath 'x' + endtry + + try + call T72_addpath('T1') + let var{T72_throw('var4')} var{T72_addpath('T2')} | call T72_addpath('T3') + call T72_addpath('T4') + catch /^var4$/ + call T72_addpath('T5') + endtry + + try + call T72_addpath('T6') + unlet var{T72_throw('var5')} var{T72_addpath('T7')} + \ | call T72_addpath('T8') + call T72_addpath('T9') + catch /^var5$/ + call T72_addpath('T10') + endtry + + call assert_equal('T1T5T6T10', g:T72_addpath) + call assert_equal(11, g:throwcount) + catch /.*/ + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + call assert_equal('acdfhikmoprsuvx', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 73: :throw across :function, :delfunction {{{1 +" +" The :function and :delfunction commands may cause an expression +" specified in braces to be evaluated. During evaluation, an +" exception might be thrown. The exception can be caught by the +" script. +"------------------------------------------------------------------------------- + +let T73_taken = '' + +func T73_throw(x, n) + let g:T73_taken = g:T73_taken . 'T' . a:n + throw a:x +endfunc + +func T73_expr(x, n) + let g:T73_taken = g:T73_taken . 'E' . a:n + if a:n % 2 == 0 + call T73_throw(a:x, a:n) + endif + return 2 - a:n % 2 +endfunc + +func Test_throw_func() + XpathINIT + + try + try + " Define function. + Xpath 'a' + function! F0() + endfunction + Xpath 'b' + function! F{T73_expr('function-def-ok', 1)}() + endfunction + Xpath 'c' + function! F{T73_expr('function-def', 2)}() + endfunction + Xpath 'd' + catch /^function-def-ok$/ + Xpath 'e' + catch /^function-def$/ + Xpath 'f' + catch /.*/ + call assert_report('def: ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + " List function. + Xpath 'g' + function F0 + Xpath 'h' + function F{T73_expr('function-lst-ok', 3)} + Xpath 'i' + function F{T73_expr('function-lst', 4)} + Xpath 'j' + catch /^function-lst-ok$/ + Xpath 'k' + catch /^function-lst$/ + Xpath 'l' + catch /.*/ + call assert_report('lst: ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + " Delete function + Xpath 'm' + delfunction F0 + Xpath 'n' + delfunction F{T73_expr('function-del-ok', 5)} + Xpath 'o' + delfunction F{T73_expr('function-del', 6)} + Xpath 'p' + catch /^function-del-ok$/ + Xpath 'q' + catch /^function-del$/ + Xpath 'r' + catch /.*/ + call assert_report('del: ' . v:exception . ' in ' . v:throwpoint) + endtry + call assert_equal('E1E2T2E3E4T4E5E6T6', g:T73_taken) + catch /.*/ + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + call assert_equal('abcfghilmnor', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 74: :throw across builtin functions and commands {{{1 +" +" Some functions like exists(), searchpair() take expression +" arguments, other functions or commands like substitute() or +" :substitute cause an expression (specified in the regular +" expression) to be evaluated. During evaluation an exception +" might be thrown. The exception can be caught by the script. +"------------------------------------------------------------------------------- + +let T74_taken = "" + +func T74_throw(x, n) + let g:T74_taken = g:T74_taken . "T" . a:n + throw a:x +endfunc + +func T74_expr(x, n) + let g:T74_taken = g:T74_taken . "E" . a:n + call T74_throw(a:x . a:n, a:n) + return "EXPR" +endfunc + +func T74_skip(x, n) + let g:T74_taken = g:T74_taken . "S" . a:n . "(" . line(".") + let theline = getline(".") + if theline =~ "skip" + let g:T74_taken = g:T74_taken . "s)" + return 1 + elseif theline =~ "throw" + let g:T74_taken = g:T74_taken . "t)" + call T74_throw(a:x . a:n, a:n) + else + let g:T74_taken = g:T74_taken . ")" + return 0 + endif +endfunc + +func T74_subst(x, n) + let g:T74_taken = g:T74_taken . "U" . a:n . "(" . line(".") + let theline = getline(".") + if theline =~ "not" " T74_subst() should not be called for this line + let g:T74_taken = g:T74_taken . "n)" + call T74_throw(a:x . a:n, a:n) + elseif theline =~ "throw" + let g:T74_taken = g:T74_taken . "t)" + call T74_throw(a:x . a:n, a:n) + else + let g:T74_taken = g:T74_taken . ")" + return "replaced" + endif +endfunc + +func Test_throw_builtin_func() + XpathINIT + + try + try + Xpath 'a' + let result = exists('*{T74_expr("exists", 1)}') + Xpath 'b' + catch /^exists1$/ + Xpath 'c' + try + let result = exists('{T74_expr("exists", 2)}') + Xpath 'd' + catch /^exists2$/ + Xpath 'e' + catch /.*/ + call assert_report('exists2: ' . v:exception . ' in ' . v:throwpoint) + endtry + catch /.*/ + call assert_report('exists1: ' . v:exception . ' in ' . v:throwpoint) + endtry + + try + let file = tempname() + exec "edit" file + call append(0, [ + \ 'begin', + \ 'xx', + \ 'middle 3', + \ 'xx', + \ 'middle 5 skip', + \ 'xx', + \ 'middle 7 throw', + \ 'xx', + \ 'end']) + normal! gg + Xpath 'f' + let result = searchpair("begin", "middle", "end", '', + \ 'T74_skip("searchpair", 3)') + Xpath 'g' + let result = searchpair("begin", "middle", "end", '', + \ 'T74_skip("searchpair", 4)') + Xpath 'h' + let result = searchpair("begin", "middle", "end", '', + \ 'T74_skip("searchpair", 5)') + Xpath 'i' + catch /^searchpair[35]$/ + Xpath 'j' + catch /^searchpair4$/ + Xpath 'k' + catch /.*/ + call assert_report('searchpair: ' . v:exception . ' in ' . v:throwpoint) + finally + bwipeout! + call delete(file) + endtry + + try + let file = tempname() + exec "edit" file + call append(0, [ + \ 'subst 1', + \ 'subst 2', + \ 'not', + \ 'subst 4', + \ 'subst throw', + \ 'subst 6']) + normal! gg + Xpath 'l' + 1,2substitute/subst/\=T74_subst("substitute", 6)/ + try + Xpath 'm' + try + let v:errmsg = "" + 3substitute/subst/\=T74_subst("substitute", 7)/ + finally + if v:errmsg != "" + " If exceptions are not thrown on errors, fake the error + " exception in order to get the same execution path. + throw "faked Vim(substitute)" + endif + endtry + catch /Vim(substitute)/ " Pattern not found ('e' flag missing) + Xpath 'n' + 3substitute/subst/\=T74_subst("substitute", 8)/e + Xpath 'o' + endtry + Xpath 'p' + 4,6substitute/subst/\=T74_subst("substitute", 9)/ + Xpath 'q' + catch /^substitute[678]/ + Xpath 'r' + catch /^substitute9/ + Xpath 's' + finally + bwipeout! + call delete(file) + endtry + + try + Xpath 't' + let var = substitute("sub", "sub", '\=T74_throw("substitute()y", 10)', '') + Xpath 'u' + catch /substitute()y/ + Xpath 'v' + catch /.*/ + call assert_report('substitute()y: ' . v:exception . ' in ' + \ . v:throwpoint) + endtry + + try + Xpath 'w' + let var = substitute("not", "sub", '\=T74_throw("substitute()n", 11)', '') + Xpath 'x' + catch /substitute()n/ + Xpath 'y' + catch /.*/ + call assert_report('substitute()n: ' . v:exception . ' in ' + \ . v:throwpoint) + endtry + + call assert_equal('E1T1E2T2S3(3)S4(5s)S4(7t)T4U6(1)U6(2)U9(4)U9(5t)T9T10', + \ g:T74_taken) + + catch /.*/ + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + endtry + + call assert_equal('acefgklmnopstvwx', g:Xpath) +endfunc + + +"------------------------------------------------------------------------------- +" Test 75: Errors in builtin functions. {{{1 +" +" On an error in a builtin function called inside a :try/:endtry +" region, the evaluation of the expression calling that function and +" the command containing that expression are abandoned. The error can +" be caught as an exception. +" +" A simple :call of the builtin function is a trivial case. If the +" builtin function is called in the argument list of another function, +" no further arguments are evaluated, and the other function is not +" executed. If the builtin function is called from the argument of +" a :return command, the :return command is not executed. If the +" builtin function is called from the argument of a :throw command, +" the :throw command is not executed. The evaluation of the +" expression calling the builtin function is abandoned. +"------------------------------------------------------------------------------- + +func T75_F1(arg1) + Xpath 'a' +endfunc + +func T75_F2(arg1, arg2) + Xpath 'b' +endfunc + +func T75_G() + Xpath 'c' +endfunc + +func T75_H() + Xpath 'd' +endfunc + +func T75_R() + while 1 + try + let caught = 0 + let v:errmsg = "" + Xpath 'e' + return append(1, "s") + catch /E21/ + let caught = 1 + catch /.*/ + Xpath 'f' + finally + Xpath 'g' + if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21' + Xpath 'h' + endif + break " discard error for $VIMNOERRTHROW + endtry + endwhile + Xpath 'i' +endfunc + +func Test_builtin_func_error() + XpathINIT + + try + set noma " let append() fail with "E21" + + while 1 + try + let caught = 0 + let v:errmsg = "" + Xpath 'j' + call append(1, "s") + catch /E21/ + let caught = 1 + catch /.*/ + Xpath 'k' + finally + Xpath 'l' + if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21' + Xpath 'm' + endif + break " discard error for $VIMNOERRTHROW + endtry + endwhile + + while 1 + try + let caught = 0 + let v:errmsg = "" + Xpath 'n' + call T75_F1('x' . append(1, "s")) + catch /E21/ + let caught = 1 + catch /.*/ + Xpath 'o' + finally + Xpath 'p' + if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21' + Xpath 'q' + endif + break " discard error for $VIMNOERRTHROW + endtry + endwhile + + while 1 + try + let caught = 0 + let v:errmsg = "" + Xpath 'r' + call T75_F2('x' . append(1, "s"), T75_G()) + catch /E21/ + let caught = 1 + catch /.*/ + Xpath 's' + finally + Xpath 't' + if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21' + Xpath 'u' + endif + break " discard error for $VIMNOERRTHROW + endtry + endwhile + + call T75_R() + + while 1 + try + let caught = 0 + let v:errmsg = "" + Xpath 'v' + throw "T" . append(1, "s") + catch /E21/ + let caught = 1 + catch /^T.*/ + Xpath 'w' + catch /.*/ + Xpath 'x' + finally + Xpath 'y' + if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21' + Xpath 'z' + endif + break " discard error for $VIMNOERRTHROW + endtry + endwhile + + while 1 + try + let caught = 0 + let v:errmsg = "" + Xpath 'A' + let x = "a" + let x = x . "b" . append(1, "s") . T75_H() + catch /E21/ + let caught = 1 + catch /.*/ + Xpath 'B' + finally + Xpath 'C' + if caught || $VIMNOERRTHROW && v:errmsg =~ 'E21' + Xpath 'D' + endif + call assert_equal('a', x) + break " discard error for $VIMNOERRTHROW + endtry + endwhile + catch /.*/ + call assert_report('Caught ' . v:exception . ' in ' . v:throwpoint) + finally + set ma& + endtry + + call assert_equal('jlmnpqrtueghivyzACD', g:Xpath) +endfunc + +func Test_reload_in_try_catch() + call writefile(['x'], 'Xreload') + set autoread + edit Xreload + tabnew + call writefile(['xx'], 'Xreload') + augroup ReLoad + au FileReadPost Xreload let x = doesnotexist + au BufReadPost Xreload let x = doesnotexist + augroup END + try + edit Xreload + catch + endtry + tabnew + + tabclose + tabclose + autocmd! ReLoad + set noautoread + bwipe! Xreload + call delete('Xreload') +endfunc + +" Test for errors with :catch, :throw, :finally {{{1 +func Test_try_catch_errors() + call assert_fails('throw |', 'E471:') + call assert_fails("throw \n ", 'E471:') + call assert_fails('catch abc', 'E654:') + call assert_fails('try | let i = 1| finally | catch | endtry', 'E604:') + call assert_fails('finally', 'E606:') + call assert_fails('try | finally | finally | endtry', 'E607:') + call assert_fails('try | for i in range(5) | endif | endtry', 'E580:') + call assert_fails('try | while v:true | endtry', 'E170:') + call assert_fails('try | if v:true | endtry', 'E171:') +endfunc + +" Test for verbose messages with :try :catch, and :finally {{{1 +func Test_try_catch_verbose() + " This test works only when the language is English + CheckEnglish + + set verbose=14 + + " Test for verbose messages displayed when an exception is caught + redir => msg + try + echo i + catch /E121:/ + finally + endtry + redir END + let expected = [ + \ 'Exception thrown: Vim(echo):E121: Undefined variable: i', '', + \ 'Exception caught: Vim(echo):E121: Undefined variable: i', '', + \ 'Exception finished: Vim(echo):E121: Undefined variable: i'] + call assert_equal(expected, split(msg, "\n")) + + " Test for verbose messages displayed when an exception is discarded + redir => msg + try + try + throw 'abc' + finally + throw 'xyz' + endtry + catch + endtry + redir END + let expected = [ + \ 'Exception thrown: abc', '', + \ 'Exception made pending: abc', '', + \ 'Exception thrown: xyz', '', + \ 'Exception discarded: abc', '', + \ 'Exception caught: xyz', '', + \ 'Exception finished: xyz'] + call assert_equal(expected, split(msg, "\n")) + + " Test for messages displayed when :throw is resumed after :finally + redir => msg + try + try + throw 'abc' + finally + endtry + catch + endtry + redir END + let expected = [ + \ 'Exception thrown: abc', '', + \ 'Exception made pending: abc', '', + \ 'Exception resumed: abc', '', + \ 'Exception caught: abc', '', + \ 'Exception finished: abc'] + call assert_equal(expected, split(msg, "\n")) + + " Test for messages displayed when :break is resumed after :finally + redir => msg + for i in range(1) + try + break + finally + endtry + endfor + redir END + let expected = [':break made pending', '', ':break resumed'] + call assert_equal(expected, split(msg, "\n")) + + " Test for messages displayed when :continue is resumed after :finally + redir => msg + for i in range(1) + try + continue + finally + endtry + endfor + redir END + let expected = [':continue made pending', '', ':continue resumed'] + call assert_equal(expected, split(msg, "\n")) + + " Test for messages displayed when :return is resumed after :finally + func Xtest() + try + return 'vim' + finally + endtry + endfunc + redir => msg + call Xtest() + redir END + let expected = [ + \ 'calling Xtest()', '', + \ ':return vim made pending', '', + \ ':return vim resumed', '', + \ 'Xtest returning ''vim''', '', + \ 'continuing in Test_try_catch_verbose'] + call assert_equal(expected, split(msg, "\n")) + delfunc Xtest + + " Test for messages displayed when :finish is resumed after :finally + call writefile(['try', 'finish', 'finally', 'endtry'], 'Xscript') + redir => msg + source Xscript + redir END + let expected = [ + \ ':finish made pending', '', + \ ':finish resumed', '', + \ 'finished sourcing Xscript', + \ 'continuing in Test_try_catch_verbose'] + call assert_equal(expected, split(msg, "\n")[1:]) + call delete('Xscript') + + " Test for messages displayed when a pending :continue is discarded by an + " exception in a finally handler + redir => msg + try + for i in range(1) + try + continue + finally + throw 'abc' + endtry + endfor + catch + endtry + redir END + let expected = [ + \ ':continue made pending', '', + \ 'Exception thrown: abc', '', + \ ':continue discarded', '', + \ 'Exception caught: abc', '', + \ 'Exception finished: abc'] + call assert_equal(expected, split(msg, "\n")) + + set verbose& +endfunc + +" Test for throwing an exception from a BufEnter autocmd {{{1 +func Test_BufEnter_exception() + augroup bufenter_exception + au! + autocmd BufEnter Xfile1 throw 'abc' + augroup END + + let caught_abc = 0 + try + sp Xfile1 + catch /^abc/ + let caught_abc = 1 + endtry + call assert_equal(1, caught_abc) + call assert_equal(1, winnr('$')) + + augroup bufenter_exception + au! + augroup END + augroup! bufenter_exception + %bwipe! + + " Test for recursively throwing exceptions in autocmds + augroup bufenter_exception + au! + autocmd BufEnter Xfile1 throw 'bufenter' + autocmd BufLeave Xfile1 throw 'bufleave' + augroup END + + let ex_count = 0 + try + try + sp Xfile1 + catch /^bufenter/ + let ex_count += 1 + endtry + catch /^bufleave/ + let ex_count += 10 + endtry + call assert_equal(10, ex_count) + call assert_equal(2, winnr('$')) + + augroup bufenter_exception + au! + augroup END + augroup! bufenter_exception + %bwipe! +endfunc + +" Test for using try/catch in a user command with a failing expression {{{1 +func Test_user_command_try_catch() + let lines =<< trim END + function s:throw() abort + throw 'error' + endfunction + + command! Execute + \ try + \ | let s:x = s:throw() + \ | catch + \ | let g:caught = 'caught' + \ | endtry + + let g:caught = 'no' + Execute + call assert_equal('caught', g:caught) + END + call writefile(lines, 'XtestTryCatch') + source XtestTryCatch + + call delete('XtestTryCatch') + unlet g:caught +endfunc + +" Modeline {{{1 +" vim: ts=8 sw=2 sts=2 expandtab tw=80 fdm=marker |