Group handler test cases in a directory

12 files changed, 765 insertions, 0 deletions

diff --git a/test/handler/test_common_handlers.vader b/test/handler/test_common_handlers.vader
new file mode 100644
index 00000000..0968a916
--- /dev/null
+++ b/test/handler/test_common_handlers.vader
@@ -0,0 +1,208 @@
+Execute (Run HandleCSSLintFormat):
+  let g:loclist = ale#handlers#HandleCSSLintFormat(42, [
+  \ 'something.css: line 2, col 1, Error - Expected RBRACE at line 2, col 1. (errors)',
+  \ "something.css: line 2, col 5, Warning - Expected ... but found 'wat'. (known-properties)",
+  \])
+
+Then (The loclist should be correct):
+  AssertEqual [
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 2,
+  \   'col': 1,
+  \   'type': 'E',
+  \   'text': '(errors) Expected RBRACE at line 2, col 1.',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 2,
+  \   'col': 5,
+  \   'type': 'W',
+  \   'text': "(known-properties) Expected ... but found 'wat'.",
+  \ },
+  \], g:loclist
+
+Execute (Run HandlePEP8Format):
+  let g:loclist = ale#handlers#HandlePEP8Format(42, [
+  \ "stdin:6:6: E111 indentation is not a multiple of four",
+  \ "test.yml:35: [EANSIBLE0002] Trailing whitespace",
+  \])
+
+Then (The loclist should be correct):
+  AssertEqual [
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 6,
+  \   'col': 6,
+  \   'type': 'E',
+  \   'text': 'E111: indentation is not a multiple of four',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 35,
+  \   'col': 0,
+  \   'type': 'E',
+  \   'text': "EANSIBLE0002: Trailing whitespace",
+  \ },
+  \], g:loclist
+
+Execute (Run HandleGCCFormat):
+  let g:loclist = ale#handlers#HandleGCCFormat(42, [
+  \ '<stdin>:8:5: warning: conversion lacks type at end of format [-Wformat=]',
+  \ '<stdin>:10:27: error: invalid operands to binary - (have ‘int’ and ‘char *’)',
+  \])
+
+Then (The loclist should be correct):
+  AssertEqual [
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 8,
+  \   'col': 5,
+  \   'type': 'W',
+  \   'text': 'conversion lacks type at end of format [-Wformat=]',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 10,
+  \   'col': 27,
+  \   'type': 'E',
+  \   'text': 'invalid operands to binary - (have ‘int’ and ‘char *’)',
+  \ },
+  \], g:loclist
+
+Execute (Run HandleUnixFormatAsError):
+  let g:loclist = ale#handlers#HandleUnixFormatAsError(42, [
+  \ 'file.go:27: missing argument for Printf("%s"): format reads arg 2, have only 1 args',
+  \ 'file.go:53:10: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary)',
+  \ 'test.pug:1:1 ".b" is not a valid class name.  Class names must begin with "-", "_" or a letter and can only contain "_", "-", a-z and 0-9.',
+  \])
+
+Then (The loclist should be correct):
+  AssertEqual [
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 27,
+  \   'col': 0,
+  \   'type': 'E',
+  \   'text': 'missing argument for Printf("%s"): format reads arg 2, have only 1 args',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 53,
+  \   'col': 10,
+  \   'type': 'E',
+  \   'text': 'if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary)',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 1,
+  \   'col': 1,
+  \   'type': 'E',
+  \   'text': '".b" is not a valid class name.  Class names must begin with "-", "_" or a letter and can only contain "_", "-", a-z and 0-9.',
+  \ },
+  \], g:loclist
+
+Execute (Run HandleUnixFormatAsWarning):
+  let g:loclist = ale#handlers#HandleUnixFormatAsWarning(42, [
+  \ 'file.go:27: missing argument for Printf("%s"): format reads arg 2, have only 1 args',
+  \ 'file.go:53:10: if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary)',
+  \])
+
+Then (The loclist should be correct):
+  AssertEqual [
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 27,
+  \   'col': 0,
+  \   'type': 'W',
+  \   'text': 'missing argument for Printf("%s"): format reads arg 2, have only 1 args',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 53,
+  \   'col': 10,
+  \   'type': 'W',
+  \   'text': 'if block ends with a return statement, so drop this else and outdent its block (move short variable declaration to its own line if necessary)',
+  \ },
+  \], g:loclist
+
+Execute (Run a Unix format function with a Windows path):
+  let g:loclist = ale#handlers#HandleUnixFormatAsError(42, [
+  \ 'C:\Users\w0rp\AppData\Local\Temp\Xyz123.go:27: foo',
+  \ 'C:\Users\w0rp\AppData\Local\Temp\Xyz123.go:53:10: foo',
+  \])
+
+Then (The loclist should be correct):
+  AssertEqual [
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 27,
+  \   'col': 0,
+  \   'type': 'E',
+  \   'text': 'foo',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 53,
+  \   'col': 10,
+  \   'type': 'E',
+  \   'text': 'foo',
+  \ },
+  \], g:loclist
+
+Execute (Run HandleCppCheckFormat):
+  let g:loclist = ale#handlers#HandleCppCheckFormat(42, [
+  \ '[/tmp/test.c:5]: (style) Variable a is assigned a value that is never used.',
+  \ '[/tmp/test.c:12]: (error) Array a[10] accessed at index 10, which is out of bounds.'
+  \])
+
+Then (The loclist should be correct):
+  AssertEqual [
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 5,
+  \   'col': 0,
+  \   'type': 'W',
+  \   'text': 'Variable a is assigned a value that is never used. (style)',
+  \ },
+  \ {
+  \   'bufnr': 42,
+  \   'vcol': 0,
+  \   'nr': -1,
+  \   'lnum': 12,
+  \   'col': 0,
+  \   'type': 'E',
+  \   'text': 'Array a[10] accessed at index 10, which is out of bounds. (error)',
+  \ },
+  \], g:loclist
+
+After:
+  unlet g:loclist
diff --git a/test/handler/test_credo_handler.vader b/test/handler/test_credo_handler.vader
new file mode 100644
index 00000000..73f98ba0
--- /dev/null
+++ b/test/handler/test_credo_handler.vader
@@ -0,0 +1,29 @@
+Execute(The credo handler should parse lines correctly):
+  runtime ale_linters/elixir/credo.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 1,
+  \     'col': 4,
+  \     'text': 'There is no whitespace around parentheses/brackets most of the time, but here there is.',
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 26,
+  \     'col': 0,
+  \     'text': 'If/else blocks should not have a negated condition in `if`.',
+  \     'type': 'W',
+  \   },
+  \ ],
+  \ ale_linters#elixir#credo#Handle(347, [
+  \   'This line should be ignored completely',
+  \   'lib/filename.ex:1:4: C: There is no whitespace around parentheses/brackets most of the time, but here there is.',
+  \   'lib/phoenix/channel.ex:26: R: If/else blocks should not have a negated condition in `if`.',
+  \ ])
+
+After:
+  call ale#linter#Reset()
+
diff --git a/test/handler/test_eslint_handler.vader b/test/handler/test_eslint_handler.vader
new file mode 100644
index 00000000..692d8b30
--- /dev/null
+++ b/test/handler/test_eslint_handler.vader
@@ -0,0 +1,37 @@
+Execute(The eslint handler should parse lines correctly):
+  runtime ale_linters/javascript/eslint.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 47,
+  \     'col': 14,
+  \     'text': 'Missing trailing comma. [Warning/comma-dangle]',
+  \     'type': 'W',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 56,
+  \     'col': 41,
+  \     'text': 'Missing semicolon. [Error/semi]',
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 13,
+  \     'col': 3,
+  \     'text': 'Parsing error: Unexpected token',
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#javascript#eslint#Handle(347, [
+  \   'This line should be ignored completely',
+  \   '/path/to/some-filename.js:47:14: Missing trailing comma. [Warning/comma-dangle]',
+  \   '/path/to/some-filename.js:56:41: Missing semicolon. [Error/semi]',
+  \   'This line should be ignored completely',
+  \   '/path/to/some-filename.js:13:3: Parsing error: Unexpected token',
+  \ ])
+
+After:
+  call ale#linter#Reset()
diff --git a/test/handler/test_flow_handler.vader b/test/handler/test_flow_handler.vader
new file mode 100644
index 00000000..c6b86104
--- /dev/null
+++ b/test/handler/test_flow_handler.vader
@@ -0,0 +1,130 @@
+Before:
+  let g:flow_output = {
+  \ "flowVersion": "0.39.0",
+  \ "errors": [
+  \   {
+  \     "kind": "infer",
+  \     "level": "error",
+  \     "message": [
+  \       {
+  \         "context": "  return 1",
+  \         "descr": "number",
+  \         "type": "Blame",
+  \         "loc": {
+  \           "source": "/home/w0rp/Downloads/graphql-js/src/language/parser.js",
+  \           "type": "SourceFile",
+  \           "start": {
+  \             "line": 417,
+  \             "column": 10,
+  \             "offset": 9503
+  \           },
+  \           "end": {
+  \             "line": 417,
+  \             "column": 10,
+  \             "offset": 9504
+  \           }
+  \         },
+  \         "path": "/home/w0rp/Downloads/graphql-js/src/language/parser.js",
+  \         "line": 417,
+  \         "endline": 417,
+  \         "start": 10,
+  \         "end": 10
+  \       },
+  \       {
+  \         "context": v:null,
+  \         "descr": "This type is incompatible with the expected return type of",
+  \         "type": "Comment",
+  \         "path": "",
+  \         "line": 0,
+  \         "endline": 0,
+  \         "start": 1,
+  \         "end": 0
+  \       },
+  \       {
+  \         "context": "function parseArguments(lexer: Lexer<*>): Array<ArgumentNode> {",
+  \         "descr": "array type",
+  \         "type": "Blame",
+  \         "loc": {
+  \           "source": "/home/w0rp/Downloads/graphql-js/src/language/parser.js",
+  \           "type": "SourceFile",
+  \           "start": {
+  \             "line": 416,
+  \             "column": 43,
+  \             "offset": 9472
+  \           },
+  \           "end": {
+  \             "line": 416,
+  \             "column": 61,
+  \             "offset": 9491
+  \           }
+  \         },
+  \         "path": "/home/w0rp/Downloads/graphql-js/src/language/parser.js",
+  \         "line": 416,
+  \         "endline": 416,
+  \         "start": 43,
+  \         "end": 61
+  \       }
+  \     ]
+  \   },
+  \   {
+  \     "kind": "infer",
+  \     "level": "warning",
+  \     "message": [
+  \       {
+  \         "context": "  return peek(lexer, TokenKind.PAREN_L) ?",
+  \         "descr": "unreachable code",
+  \         "type": "Blame",
+  \         "loc": {
+  \           "source": "/home/w0rp/Downloads/graphql-js/src/language/parser.js",
+  \           "type": "SourceFile",
+  \           "start": {
+  \             "line": 419,
+  \             "column": 3,
+  \             "offset": 9508
+  \           },
+  \           "end": {
+  \             "line": 421,
+  \             "column": 7,
+  \             "offset": 9626
+  \           }
+  \         },
+  \         "path": "/home/w0rp/Downloads/graphql-js/src/language/parser.js",
+  \         "line": 419,
+  \         "endline": 421,
+  \         "start": 3,
+  \         "end": 7
+  \       }
+  \     ]
+  \   }
+  \ ],
+  \ "passed": v:false
+  \}
+
+  runtime ale_linters/javascript/flow.vim
+
+After:
+  unlet! g:flow_output
+  unlet! g:expected
+  unlet! g:actual
+  call ale#linter#Reset()
+
+Execute(The flow handler should process errors correctly.):
+  let g:actual = ale_linters#javascript#flow#Handle(347, [json_encode(g:flow_output)])
+  let g:expected = [
+  \ {
+  \   'lnum': 417,
+  \   'bufnr': 347,
+  \   'type': 'E',
+  \   'col': 10,
+  \   'text': 'number: This type is incompatible with the expected return type of array type',
+  \ },
+  \ {
+  \   'lnum': 419,
+  \   'bufnr': 347,
+  \   'type': 'W',
+  \   'col': 3,
+  \   'text': 'unreachable code:',
+  \ },
+  \]
+
+  AssertEqual g:expected, g:actual
diff --git a/test/handler/test_fortran_handler.vader b/test/handler/test_fortran_handler.vader
new file mode 100644
index 00000000..acd83e3c
--- /dev/null
+++ b/test/handler/test_fortran_handler.vader
@@ -0,0 +1,106 @@
+Execute(The fortran handler should parse lines from GCC 4.1.2 correctly):
+  runtime ale_linters/fortran/gcc.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 357,
+  \     'lnum': 4,
+  \     'col': 0,
+  \     'text': "Symbol ‘b’ at (1) has no IMPLICIT type",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 357,
+  \     'lnum': 3,
+  \     'col': 0,
+  \     'text': "Symbol ‘a’ at (1) has no IMPLICIT type",
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#fortran#gcc#Handle(357, [
+  \   " In file :4",
+  \   "",
+  \   "write(*,*) b",
+  \   "           1",
+  \   "Error: Symbol ‘b’ at (1) has no IMPLICIT type",
+  \   " In file :3",
+  \   "",
+  \   "write(*,*) a",
+  \   "           1",
+  \   "Error: Symbol ‘a’ at (1) has no IMPLICIT type",
+  \ ])
+
+After:
+  call ale#linter#Reset()
+
+
+Execute(The fortran handler should parse lines from GCC 4.9.3 correctly):
+  runtime ale_linters/fortran/gcc.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 357,
+  \     'lnum': 3,
+  \     'col': 12,
+  \     'text': "Symbol ‘a’ at (1) has no IMPLICIT type",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 357,
+  \     'lnum': 4,
+  \     'col': 12,
+  \     'text': "Symbol ‘b’ at (1) has no IMPLICIT type",
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#fortran#gcc#Handle(357, [
+  \   ":3.12:",
+  \   "",
+  \   "write(*,*) a",
+  \   "           1",
+  \   "Error: Symbol ‘a’ at (1) has no IMPLICIT type",
+  \   ":4.12:",
+  \   "",
+  \   "write(*,*) b",
+  \   "           1",
+  \   "Error: Symbol ‘b’ at (1) has no IMPLICIT type",
+  \ ])
+
+After:
+  call ale#linter#Reset()
+
+
+
+Execute(The fortran handler should parse lines from GCC 6.3.1 correctly):
+  runtime ale_linters/fortran/gcc.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 337,
+  \     'lnum': 3,
+  \     'col': 12,
+  \     'text': "Symbol ‘a’ at (1) has no IMPLICIT type",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 337,
+  \     'lnum': 4,
+  \     'col': 12,
+  \     'text': "Symbol ‘b’ at (1) has no IMPLICIT type",
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#fortran#gcc#Handle(337, [
+  \   "<stdin>:3:12:",
+  \   "",
+  \   "Error: Symbol ‘a’ at (1) has no IMPLICIT type",
+  \   "<stdin>:4:12:",
+  \   "",
+  \   "Error: Symbol ‘b’ at (1) has no IMPLICIT type",
+  \ ])
+
+After:
+  call ale#linter#Reset()
diff --git a/test/handler/test_ghc_handler.vader b/test/handler/test_ghc_handler.vader
new file mode 100644
index 00000000..2350d9e5
--- /dev/null
+++ b/test/handler/test_ghc_handler.vader
@@ -0,0 +1,42 @@
+Execute(The ghc handler should handle hdevtools output):
+
+  AssertEqual
+  \ [
+  \   {'lnum': 147, 'bufnr': 12, 'vcol': 0, 'nr': -1, 'type': 'W', 'col': 62, 'text': '• Couldnt match type ‘a -> T.Text’ with ‘T.Text’ Expected type: [T.Text]'},
+  \ ],
+  \ ale#handlers#HandleGhcFormat(12, [
+  \ '/path/to/foo.hs:147:62: warning:',
+  \ '• Couldnt match type ‘a -> T.Text’ with ‘T.Text’',
+  \ '  Expected type: [T.Text]',
+  \ ])
+
+
+Execute(The ghc handler should handle ghc 8 output):
+
+  AssertEqual
+  \ [
+  \   {'lnum': 6, 'bufnr': 47, 'vcol': 0, 'nr': -1, 'type': 'E', 'col': 1, 'text': ' Failed to load interface for ‘GitHub.Data’ Use -v to see a list of the files searched for.'},
+  \   {'lnum': 7, 'bufnr': 47, 'vcol': 0, 'nr': -1, 'type': 'W', 'col': 1, 'text': ' Failed to load interface for ‘GitHub.Endpoints.PullRequests’ Use -v to see a list of the files searched for.'},
+  \ ],
+  \ ale#handlers#HandleGhcFormat(47, [
+  \ '',
+  \ 'src/Appoint/Lib.hs:6:1: error:',
+  \ '    Failed to load interface for ‘GitHub.Data’',
+  \ '    Use -v to see a list of the files searched for.',
+  \ '',
+  \ 'src/Appoint/Lib.hs:7:1: warning:',
+  \ '    Failed to load interface for ‘GitHub.Endpoints.PullRequests’',
+  \ '    Use -v to see a list of the files searched for.',
+  \ ])
+
+
+Execute(The ghc handler should handle ghc 7 output):
+
+  AssertEqual
+  \ [
+  \   {'lnum': 168, 'bufnr': 47, 'vcol': 0, 'nr': -1, 'type': 'E', 'col': 1, 'text': ' parse error (possibly incorrect indentation or mismatched brackets)'},
+  \ ],
+  \ ale#handlers#HandleGhcFormat(47, [
+  \ 'src/Main.hs:168:1:',
+  \ '    parse error (possibly incorrect indentation or mismatched brackets)',
+  \ ])
diff --git a/test/handler/test_mypy_handler.vader b/test/handler/test_mypy_handler.vader
new file mode 100644
index 00000000..e161f8ae
--- /dev/null
+++ b/test/handler/test_mypy_handler.vader
@@ -0,0 +1,28 @@
+Execute(The mypy handler should parse lines correctly):
+  runtime ale_linters/python/mypy.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 4,
+  \     'col': 0,
+  \     'text': "No library stub file for module 'django.db'",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 40,
+  \     'col': 5,
+  \     'text': "Some other problem",
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#python#mypy#Handle(347, [
+  \   "file.py:4: error: No library stub file for module 'django.db'",
+  \   'file.py:4: note: (Stub files are from https://github.com/python/typeshed)',
+  \   "file.py:40:5: error: Some other problem",
+  \ ])
+
+After:
+  call ale#linter#Reset()
diff --git a/test/handler/test_nix_handler.vader b/test/handler/test_nix_handler.vader
new file mode 100644
index 00000000..188d3fa9
--- /dev/null
+++ b/test/handler/test_nix_handler.vader
@@ -0,0 +1,26 @@
+Execute(The nix handler should parse nix-instantiate error messages correctly):
+  runtime ale_linters/nix/nix.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 47,
+  \     'lnum': 23,
+  \     'col': 14,
+  \     'text': 'error: syntax error, unexpected IN',
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 47,
+  \     'lnum': 3,
+  \     'col': 12,
+  \     'text': 'error: syntax error, unexpected ''='', expecting '';''',
+  \     'type': 'E',
+  \   },
+  \
+  \ ],
+  \ ale_linters#nix#nix#Handle(47, [
+  \   'This line should be ignored',
+  \   'error: syntax error, unexpected IN, at /path/to/filename.nix:23:14',
+  \   'error: syntax error, unexpected ''='', expecting '';'', at /path/to/filename.nix:3:12',
+  \ ])
diff --git a/test/handler/test_php_handler.vader b/test/handler/test_php_handler.vader
new file mode 100644
index 00000000..bf6d45cc
--- /dev/null
+++ b/test/handler/test_php_handler.vader
@@ -0,0 +1,66 @@
+Given (Some invalid lines of PHP):
+  [foo;]
+  class Foo { / }
+  $foo)
+  ['foo' 'bar']
+
+Execute(The php handler should parse lines correctly):
+  runtime ale_linters/php/php.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 1,
+  \     'col': 5,
+  \     'text': "syntax error, unexpected ';', expecting ']'",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 2,
+  \     'col': 13,
+  \     'text': "syntax error, unexpected '/', expecting function (T_FUNCTION) or const (T_CONST)",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 3,
+  \     'col': 5,
+  \     'text': "syntax error, unexpected ')'",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 4,
+  \     'col': 8,
+  \     'text': "syntax error, unexpected ''bar'' (T_CONSTANT_ENCAPSED_STRING), expecting ']'",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 21,
+  \     'col': 0,
+  \     'text': "syntax error, unexpected end of file",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 47,
+  \     'col': 0,
+  \     'text': "Invalid numeric literal",
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#php#php#Handle(347, [
+  \   'This line should be ignored completely',
+  \   "PHP Parse error:  syntax error, unexpected ';', expecting ']' in - on line 1",
+  \   "PHP Parse error:  syntax error, unexpected '/', expecting function (T_FUNCTION) or const (T_CONST) in - on line 2",
+  \   "PHP Parse error:  syntax error, unexpected ')' in - on line 3",
+  \   "PHP Parse error:  syntax error, unexpected ''bar'' (T_CONSTANT_ENCAPSED_STRING), expecting ']' in - on line 4",
+  \   'PHP Parse error:  syntax error, unexpected end of file in - on line 21',
+  \   'PHP Parse error: Invalid numeric literal in - on line 47',
+  \ ])
+
+After:
+  call ale#linter#Reset()
diff --git a/test/handler/test_rust_handler.vader b/test/handler/test_rust_handler.vader
new file mode 100644
index 00000000..d4d54d37
--- /dev/null
+++ b/test/handler/test_rust_handler.vader
@@ -0,0 +1,28 @@
+Execute(The Rust handler should handle rustc output):
+  AssertEqual
+  \ [
+  \   {'lnum': 15, 'bufnr': 347, 'vcol': 0, 'nr': -1, 'type': 'E', 'col': 418, 'text': 'expected one of `.`, `;`, `?`, `}`, or an operator, found `for`'},
+  \   {'lnum': 13, 'bufnr': 347, 'vcol': 0, 'nr': -1, 'type': 'E', 'col': 407, 'text': 'no method named `wat` found for type `std::string::String` in the current scope'},
+  \ ],
+  \ ale#handlers#rust#HandleRustErrorsForFile(347, 'src/playpen.rs', [
+  \   '',
+  \   'ignore this',
+  \   '{"message":"expected one of `.`, `;`, `?`, `}`, or an operator, found `for`","code":null,"level":"error","spans":[{"file_name":"<anon>","byte_start":418,"byte_end":421,"line_start":15,"line_end":15,"column_start":5,"column_end":8,"is_primary":true,"text":[{"text":"    for chr in source.trim().chars() {","highlight_start":5,"highlight_end":8}],"label":null,"suggested_replacement":null,"expansion":null}],"children":[],"rendered":null}',
+  \   '{"message":"main function not found","code":null,"level":"error","spans":[],"children":[],"rendered":null}',
+  \   '{"message":"no method named `wat` found for type `std::string::String` in the current scope","code":null,"level":"error","spans":[{"file_name":"<anon>","byte_start":407,"byte_end":410,"line_start":13,"line_end":13,"column_start":7,"column_end":10,"is_primary":true,"text":[{"text":"    s.wat()","highlight_start":7,"highlight_end":10}],"label":null,"suggested_replacement":null,"expansion":null}],"children":[],"rendered":null}',
+  \   '{"message":"aborting due to previous error","code":null,"level":"error","spans":[],"children":[],"rendered":null}',
+  \ ])
+
+Execute(The Rust handler should handle cargo output):
+  AssertEqual
+  \ [
+  \   {'lnum': 15, 'bufnr': 347, 'vcol': 0, 'nr': -1, 'type': 'E', 'col': 11505, 'text': 'expected one of `.`, `;`, `?`, `}`, or an operator, found `for`'},
+  \   {'lnum': 13, 'bufnr': 347, 'vcol': 0, 'nr': -1, 'type': 'E', 'col': 11494, 'text': 'no method named `wat` found for type `std::string::String` in the current scope'},
+  \ ],
+  \ ale#handlers#rust#HandleRustErrorsForFile(347, 'src/playpen.rs', [
+  \   '',
+  \   'ignore this',
+  \   '{"message":{"children":[],"code":null,"level":"error","message":"expected one of `.`, `;`, `?`, `}`, or an operator, found `for`","rendered":null,"spans":[{"byte_end":11508,"byte_start":11505,"column_end":8,"column_start":5,"expansion":null,"file_name":"src/playpen.rs","is_primary":true,"label":null,"line_end":15,"line_start":15,"suggested_replacement":null,"text":[{"highlight_end":8,"highlight_start":5,"text":"    for chr in source.trim().chars() {"}]}]},"package_id":"update 0.0.1 (path+file:///home/w0rp/Downloads/rust-by-example)","reason":"compiler-message","target":{"kind":["bin"],"name":"update","src_path":"/home/w0rp/Downloads/rust-by-example/src/main.rs"}}',
+  \   '{"message":{"children":[],"code":null,"level":"error","message":"no method named `wat` found for type `std::string::String` in the current scope","rendered":null,"spans":[{"byte_end":11497,"byte_start":11494,"column_end":10,"column_start":7,"expansion":null,"file_name":"src/playpen.rs","is_primary":true,"label":null,"line_end":13,"line_start":13,"suggested_replacement":null,"text":[{"highlight_end":10,"highlight_start":7,"text":"    s.wat()"}]}]},"package_id":"update 0.0.1 (path+file:///home/w0rp/Downloads/rust-by-example)","reason":"compiler-message","target":{"kind":["bin"],"name":"update","src_path":"/home/w0rp/Downloads/rust-by-example/src/main.rs"}}',
+  \   '{"message":{"children":[],"code":null,"level":"error","message":"aborting due to previous error","rendered":null,"spans":[]},"package_id":"update 0.0.1 (path+file:///home/w0rp/Downloads/rust-by-example)","reason":"compiler-message","target":{"kind":["bin"],"name":"update","src_path":"/home/w0rp/Downloads/rust-by-example/src/main.rs"}}',
+  \ ])
diff --git a/test/handler/test_standard_handler.vader b/test/handler/test_standard_handler.vader
new file mode 100644
index 00000000..4a69c211
--- /dev/null
+++ b/test/handler/test_standard_handler.vader
@@ -0,0 +1,38 @@
+Execute(The standard handler should parse lines correctly):
+  runtime ale_linters/javascript/standard.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 47,
+  \     'col': 14,
+  \     'text': 'Expected indentation of 2 spaces but found 4.',
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 56,
+  \     'col': 41,
+  \     'text': 'Strings must use singlequote.',
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 13,
+  \     'col': 3,
+  \     'text': 'Parsing error: Unexpected token',
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#javascript#standard#Handle(347, [
+  \   'This line should be ignored completely',
+  \   '/path/to/some-filename.js:47:14: Expected indentation of 2 spaces but found 4.',
+  \   '/path/to/some-filename.js:56:41: Strings must use singlequote.',
+  \   'This line should be ignored completely',
+  \   '/path/to/some-filename.js:13:3: Parsing error: Unexpected token',
+  \ ])
+
+After:
+  call ale#linter#Reset()
+
diff --git a/test/handler/test_typecheck_handler.vader b/test/handler/test_typecheck_handler.vader
new file mode 100644
index 00000000..e42bcaf3
--- /dev/null
+++ b/test/handler/test_typecheck_handler.vader
@@ -0,0 +1,27 @@
+Execute(The typecheck handler should parse lines correctly):
+  runtime ale_linters/typescript/typecheck.vim
+
+  AssertEqual
+  \ [
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 16,
+  \     'col': 7,
+  \     'text': "Type 'A' is not assignable to type 'B'",
+  \     'type': 'E',
+  \   },
+  \   {
+  \     'bufnr': 347,
+  \     'lnum': 7,
+  \     'col': 41,
+  \     'text': "Property 'a' does not exist on type 'A'",
+  \     'type': 'E',
+  \   },
+  \ ],
+  \ ale_linters#typescript#typecheck#Handle(347, [
+  \   "somets.ts[16, 7]: Type 'A' is not assignable to type 'B'",
+  \   "somets.ts[7, 41]: Property 'a' does not exist on type 'A'",
+  \ ])
+
+After:
+  call ale#linter#Reset()