Before: Save g:ale_set_lists_synchronously Save g:ale_buffer_info Save g:ale_lsp_error_messages Save g:ale_set_loclist Save g:ale_set_signs Save g:ale_set_quickfix Save g:ale_set_highlights Save g:ale_echo_cursor Save g:ale_disable_lsp Save g:ale_history_enabled Save g:ale_history_log_output let g:ale_disable_lsp = 0 let g:ale_set_lists_synchronously = 1 let g:ale_buffer_info = {} let g:ale_set_loclist = 1 " Disable features we don't need for these tests. let g:ale_set_signs = 0 let g:ale_set_quickfix = 0 let g:ale_set_highlights = 0 let g:ale_echo_cursor = 0 let g:ale_history_enabled = 1 let g:ale_history_log_output = 1 unlet! g:ale_lsp_error_messages unlet! b:ale_linters unlet! b:ale_disable_lsp call ale#linter#Reset() call ale#test#SetDirectory('/testplugin/test') call setloclist(0, []) After: Restore unlet! b:ale_linters call setloclist(0, []) call ale#test#RestoreDirectory() call ale#linter#Reset() call ale#lsp_linter#ClearLSPData() Given foobar(An empty file): Execute(tsserver syntax error responses should be handled correctly): runtime ale_linters/typescript/tsserver.vim if has('win32') call ale#test#SetFilename('filename,[]^$.ts') else call ale#test#SetFilename('filename*?,{}[]^$.ts') endif call ale#engine#InitBufferInfo(bufnr('')) if has('win32') AssertEqual 'filename,[]^$.ts', expand('%:p:t') else AssertEqual 'filename*?,{}[]^$.ts', expand('%:p:t') endif " When we get syntax errors and no semantic errors, we should keep the " syntax errors. call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'syntaxDiag', \ 'body': { \ 'file': expand('%:p'), \ 'diagnostics':[ \ { \ 'start': { \ 'line':2, \ 'offset':14, \ }, \ 'end': { \ 'line':2, \ 'offset':15, \ }, \ 'text': ''','' expected.', \ "code":1005 \ }, \ ], \ }, \}) call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'semanticDiag', \ 'body': { \ 'file': expand('%:p'), \ 'diagnostics':[ \ ], \ }, \}) AssertEqual \ [ \ { \ 'lnum': 1, \ 'bufnr': bufnr(''), \ 'col': 14, \ 'vcol': 0, \ 'nr': 1005, \ 'type': 'E', \ 'text': '1005: '','' expected.', \ 'valid': 1, \ 'pattern': '', \ }, \ ], \ ale#test#GetLoclistWithoutModule() " After we get empty syntax errors, we should clear them. call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'syntaxDiag', \ 'body': { \ 'file': expand('%:p'), \ 'diagnostics':[ \ ], \ }, \}) AssertEqual \ [ \ ], \ ale#test#GetLoclistWithoutModule() " Syntax errors on the project root should not populate the LocList. call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'syntaxDiag', \ 'body': { \ 'file': g:dir, \ 'diagnostics':[ \ { \ 'start': { \ 'line':2, \ 'offset':14, \ }, \ 'end': { \ 'line':2, \ 'offset':15, \ }, \ 'text': ''','' expected.', \ "code":1005 \ }, \ ], \ }, \}) AssertEqual \ [ \ ], \ ale#test#GetLoclistWithoutModule() Execute(tsserver semantic error responses should be handled correctly): runtime ale_linters/typescript/tsserver.vim if has('win32') call ale#test#SetFilename('filename,[]^$.ts') else call ale#test#SetFilename('filename*?,{}[]^$.ts') endif call ale#engine#InitBufferInfo(bufnr('')) if has('win32') AssertEqual 'filename,[]^$.ts', expand('%:p:t') else AssertEqual 'filename*?,{}[]^$.ts', expand('%:p:t') endif " When we get syntax errors and no semantic errors, we should keep the " syntax errors. call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'syntaxDiag', \ 'body': { \ 'file': expand('%:p'), \ 'diagnostics':[ \ ], \ }, \}) call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'semanticDiag', \ 'body': { \ 'file': expand('%:p'), \ 'diagnostics':[ \ { \ 'start': { \ 'line':2, \ 'offset':14, \ }, \ 'end': { \ 'line':2, \ 'offset':15, \ }, \ 'text': 'Some semantic error', \ "code":1005 \ }, \ ], \ }, \}) AssertEqual \ [ \ { \ 'lnum': 1, \ 'bufnr': bufnr(''), \ 'col': 14, \ 'vcol': 0, \ 'nr': 1005, \ 'type': 'E', \ 'text': '1005: Some semantic error', \ 'valid': 1, \ 'pattern': '', \ }, \ ], \ ale#test#GetLoclistWithoutModule() " After we get empty syntax errors, we should clear them. call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'semanticDiag', \ 'body': { \ 'file': expand('%:p'), \ 'diagnostics':[ \ ], \ }, \}) AssertEqual \ [ \ ], \ ale#test#GetLoclistWithoutModule() " Semantic errors on the project root should not populate the LocList. call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'semanticDiag', \ 'body': { \ 'file': g:dir, \ 'diagnostics':[ \ { \ 'start': { \ 'line':2, \ 'offset':14, \ }, \ 'end': { \ 'line':2, \ 'offset':15, \ }, \ 'text': 'Some semantic error', \ "code":1005 \ }, \ ], \ }, \}) AssertEqual \ [ \ ], \ ale#test#GetLoclistWithoutModule() Execute(tsserver errors should mark tsserver no longer active): let b:ale_linters = ['tsserver'] runtime ale_linters/typescript/tsserver.vim call ale#test#SetFilename('filename.ts') call ale#engine#InitBufferInfo(bufnr('')) let g:ale_buffer_info[bufnr('')].active_linter_list = ale#linter#Get('typescript') Assert !empty(g:ale_buffer_info[bufnr('')].active_linter_list) call ale#lsp_linter#HandleLSPResponse(1, { \ 'seq': 0, \ 'type': 'event', \ 'event': 'semanticDiag', \ 'body': { \ 'file': g:dir . '/filename.ts', \ 'diagnostics':[], \ }, \}) AssertEqual [], g:ale_buffer_info[bufnr('')].active_linter_list Execute(LSP diagnostics responses should be handled correctly): let b:ale_linters = ['eclipselsp'] runtime ale_linters/java/eclipselsp.vim if has('win32') call ale#test#SetFilename('filename,[]^$.ts') else call ale#test#SetFilename('filename*?,{}[]^$.java') endif call ale#engine#InitBufferInfo(bufnr('')) call ale#lsp_linter#SetLSPLinterMap({'1': 'eclipselsp'}) if has('win32') AssertEqual 'filename,[]^$.ts', expand('%:p:t') else AssertEqual 'filename*?,{}[]^$.java', expand('%:p:t') endif call ale#lsp_linter#HandleLSPResponse(1, { \ 'jsonrpc':'2.0', \ 'method':'textDocument/publishDiagnostics', \ 'params': { \ 'uri': ale#path#ToURI(expand('%:p')), \ 'diagnostics': [ \ { \ 'range': { \ 'start': { \ 'line': 0, \ 'character':0 \ }, \ 'end': { \ 'line': 0, \ 'character':0 \ } \ }, \ 'severity': 2, \ 'code': "", \ 'source': 'Java', \ 'message': 'Missing JRE 1-8' \ } \ ] \ } \}) AssertEqual \ [ \ { \ 'lnum': 1, \ 'bufnr': bufnr(''), \ 'col': 1, \ 'pattern': '', \ 'valid': 1, \ 'vcol': 0, \ 'nr': -1, \ 'type': 'W', \ 'text': 'Missing JRE 1-8' \ } \ ], \ ale#test#GetLoclistWithoutModule() Execute(LSP diagnostics responses on project root should not populate loclist): let b:ale_linters = ['eclipselsp'] runtime ale_linters/java/eclipselsp.vim call ale#test#SetFilename('filename.java') call ale#engine#InitBufferInfo(bufnr('')) call ale#lsp_linter#SetLSPLinterMap({'1': 'eclipselsp'}) call ale#lsp_linter#HandleLSPResponse(1, { \ 'jsonrpc':'2.0', \ 'method':'textDocument/publishDiagnostics', \ 'params': { \ 'uri':'file://' . g:dir, \ 'diagnostics': [ \ { \ 'range': { \ 'start': { \ 'line': 0, \ 'character':0 \ }, \ 'end': { \ 'line': 0, \ 'character':0 \ } \ }, \ 'severity': 2, \ 'code': "", \ 'source': 'Java', \ 'message': 'Missing JRE 1-8' \ } \ ] \ } \}) AssertEqual \ [ \ ], \ ale#test#GetLoclistWithoutModule() Execute(LSP errors should mark linters no longer active): let b:ale_linters = ['pylsp'] runtime ale_linters/python/pylsp.vim call ale#test#SetFilename('filename.py') call ale#engine#InitBufferInfo(bufnr('')) call ale#lsp_linter#SetLSPLinterMap({1: 'pylsp'}) let g:ale_buffer_info[bufnr('')].active_linter_list = ale#linter#Get('python') Assert !empty(g:ale_buffer_info[bufnr('')].active_linter_list) call ale#lsp_linter#HandleLSPResponse(1, { \ 'method': 'textDocument/publishDiagnostics', \ 'params': { \ 'uri': ale#path#ToURI(g:dir . '/filename.py'), \ 'diagnostics': [], \ }, \}) AssertEqual [], g:ale_buffer_info[bufnr('')].active_linter_list Execute(LSP errors should be logged in the history): call ale#lsp_linter#SetLSPLinterMap({'347': 'foobar'}) call ale#lsp_linter#HandleLSPResponse(347, { \ 'jsonrpc': '2.0', \ 'error': { \ 'code': -32602, \ 'message': 'xyz', \ 'data': { \ 'traceback': ['123', '456'], \ }, \ }, \}) AssertEqual \ {'foobar': ["xyz\n123\n456"]}, \ get(g:, 'ale_lsp_error_messages', {})