Massively reduce the amount of code needed for linter tests

ale_linters/awk/gawk.vim

@@ -15,9 +15,9 @@ function! ale_linters#awk#gawk#GetCommand(buffer) abort
     " note the --source 'BEGIN ...' is to prevent
     " gawk from attempting to execute the body of the script
     " it is linting.
-    return ale_linters#awk#gawk#GetExecutable(a:buffer)
+    return ale#Escape(ale_linters#awk#gawk#GetExecutable(a:buffer))
     \   . " --source 'BEGIN { exit } END { exit 1 }'"
-    \   . ' ' . ale#Var(a:buffer, 'awk_gawk_options')
+    \   .  ale#Pad(ale#Var(a:buffer, 'awk_gawk_options'))
     \   . ' ' . '-f %t --lint /dev/null'
 endfunction
 

ale_linters/cs/mcs.vim

@@ -1,7 +1,11 @@
 let g:ale_cs_mcs_options = get(g:, 'ale_cs_mcs_options', '')
 
 function! ale_linters#cs#mcs#GetCommand(buffer) abort
-    return 'mcs -unsafe --parse ' . ale#Var(a:buffer, 'cs_mcs_options') . ' %t'
+    let l:options = ale#Var(a:buffer, 'cs_mcs_options')
+
+    return 'mcs -unsafe --parse'
+    \   . (!empty(l:options) ? ' ' . l:options : '')
+    \   . ' %t'
 endfunction
 
 function! ale_linters#cs#mcs#Handle(buffer, lines) abort

ale_linters/cs/mcsc.vim

@@ -29,16 +29,16 @@ function! ale_linters#cs#mcsc#GetCommand(buffer) abort
     \   : ''
 
     " register temporary module target file with ale
-    let l:out = ale#util#Tempname()
-    call ale#engine#ManageFile(a:buffer, l:out)
+    " register temporary module target file with ALE.
+    let l:out = ale#engine#CreateFile(a:buffer)
 
     " The code is compiled as a module and the output is redirected to a
     " temporary file.
     return ale#path#CdString(s:GetWorkingDirectory(a:buffer))
     \    . 'mcs -unsafe'
-    \    . ' ' . ale#Var(a:buffer, 'cs_mcsc_options')
-    \    . ' ' . l:lib_option
-    \    . ' ' . l:r_option
+    \    . ale#Pad(ale#Var(a:buffer, 'cs_mcsc_options'))
+    \    . ale#Pad(l:lib_option)
+    \    . ale#Pad(l:r_option)
     \    . ' -out:' . l:out
     \    . ' -t:module'
     \    . ' -recurse:' . ale#Escape('*.cs')

ale_linters/fuse/fusionlint.vim

@@ -1,11 +1,8 @@
 " Author: RyanSquared <vandor2012@gmail.com>
 " Description: `fusion-lint` linter for FusionScript files
 
-let g:ale_fuse_fusionlint_executable =
-\   get(g:, 'ale_fuse_fusionlint_executable', 'fusion-lint')
-
-let g:ale_fuse_fusionlint_options =
-\   get(g:, 'ale_fuse_fusionlint_options', '')
+call ale#Set('fuse_fusionlint_executable', 'fusion-lint')
+call ale#Set('fuse_fusionlint_options', '')
 
 function! ale_linters#fuse#fusionlint#GetExecutable(buffer) abort
     return ale#Var(a:buffer, 'fuse_fusionlint_executable')
@@ -13,7 +10,7 @@ endfunction
 
 function! ale_linters#fuse#fusionlint#GetCommand(buffer) abort
     return ale#Escape(ale_linters#fuse#fusionlint#GetExecutable(a:buffer))
-    \   . ' ' . ale#Var(a:buffer, 'fuse_fusionlint_options')
+    \   . ale#Pad(ale#Var(a:buffer, 'fuse_fusionlint_options'))
     \   . ' --filename %s -i'
 endfunction
 

ale_linters/glsl/glslang.vim

@@ -14,9 +14,9 @@ function! ale_linters#glsl#glslang#GetExecutable(buffer) abort
 endfunction
 
 function! ale_linters#glsl#glslang#GetCommand(buffer) abort
-    return ale_linters#glsl#glslang#GetExecutable(a:buffer)
-    \   . ' ' . ale#Var(a:buffer, 'glsl_glslang_options')
-    \   . ' ' . '-C %t'
+    return ale#Escape(ale_linters#glsl#glslang#GetExecutable(a:buffer))
+    \   . ale#Pad(ale#Var(a:buffer, 'glsl_glslang_options'))
+    \   . ' -C %t'
 endfunction
 
 function! ale_linters#glsl#glslang#Handle(buffer, lines) abort

ale_linters/go/gotype.vim

@@ -3,10 +3,9 @@
 
 function! ale_linters#go#gotype#GetCommand(buffer) abort
     if expand('#' . a:buffer . ':p') =~# '_test\.go$'
-        return
+        return ''
     endif
 
-
     return ale#path#BufferCdString(a:buffer) . ' gotype .'
 endfunction
 

ale_linters/java/javac.vim

@@ -84,10 +84,10 @@ function! ale_linters#java#javac#GetCommand(buffer, import_paths) abort
     return ale#path#BufferCdString(a:buffer)
     \ . ale#Escape(l:executable)
     \ . ' -Xlint'
-    \ . ' ' . l:cp_option
-    \ . ' ' . l:sp_option
+    \ . ale#Pad(l:cp_option)
+    \ . ale#Pad(l:sp_option)
     \ . ' -d ' . ale#Escape(l:class_file_directory)
-    \ . ' ' . ale#Var(a:buffer, 'java_javac_options')
+    \ . ale#Pad(ale#Var(a:buffer, 'java_javac_options'))
     \ . ' %t'
 endfunction
 

ale_linters/llvm/llc.vim

@@ -9,8 +9,7 @@ endfunction
 
 function! ale_linters#llvm#llc#GetCommand(buffer) abort
     return ale#Escape(ale_linters#llvm#llc#GetExecutable(a:buffer))
-    \   . ' -filetype=null -o='
-    \   . ale#Escape(g:ale#util#nul_file)
+    \   . ' -filetype=null -o=' . g:ale#util#nul_file
 endfunction
 
 function! ale_linters#llvm#llc#HandleErrors(buffer, lines) abort

ale_linters/nasm/nasm.vim

@@ -42,9 +42,9 @@ endfunction
 
 call ale#linter#Define('nasm', {
 \   'name': 'nasm',
-\   'executable': 'nasm',
 \   'output_stream': 'stderr',
 \   'lint_file': 1,
+\   'executable_callback': 'ale_linters#nasm#nasm#GetExecutable',
 \   'command_callback': 'ale_linters#nasm#nasm#GetCommand',
 \   'callback': 'ale_linters#nasm#nasm#Handle',
 \})

ale_linters/ruby/rails_best_practices.vim

@@ -1,8 +1,8 @@
 " Author: Eddie Lebow https://github.com/elebow
 " Description: rails_best_practices, a code metric tool for rails projects
 
-let g:ale_ruby_rails_best_practices_options =
-\   get(g:, 'ale_ruby_rails_best_practices_options', '')
+call ale#Set('ruby_rails_best_practices_options', '')
+call ale#Set('ruby_rails_best_practices_executable', 'rails_best_practices')
 
 function! ale_linters#ruby#rails_best_practices#Handle(buffer, lines) abort
     let l:output = []
@@ -22,8 +22,12 @@ function! ale_linters#ruby#rails_best_practices#Handle(buffer, lines) abort
     return l:output
 endfunction
 
+function! ale_linters#ruby#rails_best_practices#GetExecutable(buffer) abort
+    return ale#Var(a:buffer, 'ruby_rails_best_practices_executable')
+endfunction
+
 function! ale_linters#ruby#rails_best_practices#GetCommand(buffer) abort
-    let l:executable = ale#handlers#rails_best_practices#GetExecutable(a:buffer)
+    let l:executable = ale_linters#ruby#rails_best_practices#GetExecutable(a:buffer)
     let l:exec_args = l:executable =~? 'bundle$'
     \   ? ' exec rails_best_practices'
     \   : ''
@@ -46,7 +50,7 @@ endfunction
 
 call ale#linter#Define('ruby', {
 \    'name': 'rails_best_practices',
-\    'executable_callback': 'ale#handlers#rails_best_practices#GetExecutable',
+\    'executable_callback': 'ale_linters#ruby#rails_best_practices#GetExecutable',
 \    'command_callback': 'ale_linters#ruby#rails_best_practices#GetCommand',
 \    'callback': 'ale_linters#ruby#rails_best_practices#Handle',
 \    'lint_file': 1,

ale_linters/scala/scalastyle.vim

@@ -1,11 +1,11 @@
 " Author: Kevin Kays - https://github.com/okkays
 " Description: Support for the scalastyle checker.
 
-let g:ale_scala_scalastyle_options =
-\   get(g:, 'ale_scala_scalastyle_options', '')
-
-let g:ale_scalastyle_config_loc =
+call ale#Set('scala_scalastyle_options', '')
+" TODO: Remove support for the old option name in ALE 3.0.
+call ale#Set('scala_scalastyle_config',
 \   get(g:, 'ale_scalastyle_config_loc', '')
+\)
 
 function! ale_linters#scala#scalastyle#Handle(buffer, lines) abort
     " Look for help output from scalastyle first, which indicates that no
@@ -66,23 +66,13 @@ function! ale_linters#scala#scalastyle#GetCommand(buffer) abort
 
     " If all else fails, try the global config.
     if empty(l:scalastyle_config)
-        let l:scalastyle_config = get(g:, 'ale_scalastyle_config_loc', '')
+        let l:scalastyle_config = ale#Var(a:buffer, 'scala_scalastyle_config')
     endif
 
-    " Build the command using the config file and additional options.
-    let l:command = 'scalastyle'
-
-    if !empty(l:scalastyle_config)
-        let l:command .= ' --config ' . ale#Escape(l:scalastyle_config)
-    endif
-
-    if !empty(g:ale_scala_scalastyle_options)
-        let l:command .= ' ' . g:ale_scala_scalastyle_options
-    endif
-
-    let l:command .= ' %t'
-
-    return l:command
+    return 'scalastyle'
+    \ . (!empty(l:scalastyle_config) ? ' --config ' . ale#Escape(l:scalastyle_config) : '')
+    \ . ale#Pad(ale#Var(a:buffer, 'scala_scalastyle_options'))
+    \ . ' %t'
 endfunction
 
 call ale#linter#Define('scala', {

ale_linters/thrift/thrift.vim

@@ -20,14 +20,12 @@ function! ale_linters#thrift#thrift#GetCommand(buffer) abort
         let l:generators = ['cpp']
     endif
 
-    let l:output_dir = ale#util#Tempname()
-    call mkdir(l:output_dir)
-    call ale#engine#ManageDirectory(a:buffer, l:output_dir)
+    let l:output_dir = ale#engine#CreateDirectory(a:buffer)
 
     return ale#Escape(ale_linters#thrift#thrift#GetExecutable(a:buffer))
-    \   . ' ' . join(map(copy(l:generators), "'--gen ' . v:val"))
-    \   . ' ' . join(map(copy(l:includes), "'-I ' . v:val"))
-    \   . ' ' . ale#Var(a:buffer, 'thrift_thrift_options')
+    \   . ale#Pad(join(map(copy(l:generators), "'--gen ' . v:val")))
+    \   . ale#Pad(join(map(copy(l:includes), "'-I ' . v:val")))
+    \   . ale#Pad(ale#Var(a:buffer, 'thrift_thrift_options'))
     \   . ' -out ' . ale#Escape(l:output_dir)
     \   . ' %t'
 endfunction

ale_linters/typescript/tslint.vim

@@ -1,17 +1,7 @@
 " Author: Prashanth Chandra <https://github.com/prashcr>, Jonathan Clem <https://jclem.net>
 " Description: tslint for TypeScript files
 
-call ale#Set('typescript_tslint_executable', 'tslint')
-call ale#Set('typescript_tslint_config_path', '')
-call ale#Set('typescript_tslint_rules_dir', '')
-call ale#Set('typescript_tslint_use_global', get(g:, 'ale_use_global_executables', 0))
-call ale#Set('typescript_tslint_ignore_empty_files', 0)
-
-function! ale_linters#typescript#tslint#GetExecutable(buffer) abort
-    return ale#node#FindExecutable(a:buffer, 'typescript_tslint', [
-    \   'node_modules/.bin/tslint',
-    \])
-endfunction
+call ale#handlers#tslint#InitVariables()
 
 function! ale_linters#typescript#tslint#Handle(buffer, lines) abort
     " Do not output any errors for empty files if the option is on.
@@ -70,7 +60,7 @@ function! ale_linters#typescript#tslint#GetCommand(buffer) abort
     \  : ''
 
     return ale#path#BufferCdString(a:buffer)
-    \   . ale#Escape(ale_linters#typescript#tslint#GetExecutable(a:buffer))
+    \   . ale#Escape(ale#handlers#tslint#GetExecutable(a:buffer))
     \   . ' --format json'
     \   . l:tslint_config_option
     \   . l:tslint_rules_option
@@ -79,7 +69,7 @@ endfunction
 
 call ale#linter#Define('typescript', {
 \   'name': 'tslint',
-\   'executable_callback': 'ale_linters#typescript#tslint#GetExecutable',
+\   'executable_callback': 'ale#handlers#tslint#GetExecutable',
 \   'command_callback': 'ale_linters#typescript#tslint#GetCommand',
 \   'callback': 'ale_linters#typescript#tslint#Handle',
 \})

ale_linters/xml/xmllint.vim

@@ -11,7 +11,7 @@ endfunction
 
 function! ale_linters#xml#xmllint#GetCommand(buffer) abort
     return ale#Escape(ale_linters#xml#xmllint#GetExecutable(a:buffer))
-    \   . ' ' . ale#Var(a:buffer, 'xml_xmllint_options')
+    \   . ale#Pad(ale#Var(a:buffer, 'xml_xmllint_options'))
     \   . ' --noout -'
 endfunction