Merge pull request #3292 from dmitrivereshchagin/add-elvis-handler-for-erlang

Add Elvis handler for Erlang

test/command_callback/test_erlang_elvis_command_callback.vader

@@ -0,0 +1,16 @@
+Before:
+  let b:file = fnamemodify(bufname(''), ':.')
+  call ale#assert#SetUpLinterTest('erlang', 'elvis')
+
+After:
+  call ale#assert#TearDownLinterTest()
+
+Execute(Default command should be correct):
+  AssertLinter 'elvis',
+  \ ale#Escape('elvis') . ' rock --output-format=parsable ' . ale#Escape(b:file)
+
+Execute(Executable should be configurable):
+  let b:ale_erlang_elvis_executable = '/path/to/elvis'
+
+  AssertLinter '/path/to/elvis',
+  \ ale#Escape('/path/to/elvis') . ' rock --output-format=parsable ' . ale#Escape(b:file)

test/handler/test_erlang_elvis_handler.vader

@@ -0,0 +1,37 @@
+Before:
+  runtime ale_linters/erlang/elvis.vim
+
+After:
+  call ale#linter#Reset()
+
+Execute(Warning messages should be handled):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 11,
+  \     'text': "Replace the 'if' expression on line 11 with a 'case' expression or function clauses.",
+  \     'type': 'W',
+  \   },
+  \   {
+  \     'lnum': 20,
+  \     'text': 'Remove the debug call to io:format/1 on line 20.',
+  \     'type': 'W',
+  \   },
+  \ ],
+  \ ale_linters#erlang#elvis#Handle(bufnr(''), [
+  \   "src/foo.erl:11:no_if_expression:Replace the 'if' expression on line 11 with a 'case' expression or function clauses.",
+  \   'src/foo.erl:20:no_debug_call:Remove the debug call to io:format/1 on line 20.',
+  \ ])
+
+Execute(Line length message shouldn't contain the line itself):
+  AssertEqual
+  \ [
+  \   {
+  \     'lnum': 24,
+  \     'text': 'Line 24 is too long.',
+  \     'type': 'W',
+  \   },
+  \ ],
+  \ ale_linters#erlang#elvis#Handle(bufnr(''), [
+  \   'src/foo.erl:24:line_length:Line 24 is too long:     io:format("Look ma, too long!"),.',
+  \ ])