#3633 - Move linter tests into test/linter

test/linter/test_less_stylelint.vader

@@ -0,0 +1,31 @@
+Before:
+  call ale#assert#SetUpLinterTest('less', 'stylelint')
+  unlet! b:executable
+
+After:
+  unlet! b:executable
+  call ale#assert#TearDownLinterTest()
+
+Execute(node_modules directories should be discovered):
+  call ale#test#SetFilename('../test-files/stylelint/nested/testfile.less')
+
+  let b:executable = ale#path#Simplify(
+  \   g:dir
+  \   . '/../test-files/stylelint/node_modules/.bin/stylelint'
+  \)
+
+  AssertLinter b:executable, ale#Escape(b:executable) . ' --stdin-filename %s'
+
+Execute(The global override should work):
+  let b:ale_less_stylelint_executable = 'foobar'
+  let b:ale_less_stylelint_use_global = 1
+
+  call ale#test#SetFilename('../test-files/stylelint/nested/testfile.less')
+
+  AssertLinter 'foobar', ale#Escape('foobar') . ' --stdin-filename %s'
+
+Execute(Extra options should be configurable):
+  let b:ale_less_stylelint_options = '--whatever'
+
+  AssertLinter 'stylelint',
+  \ ale#Escape('stylelint') . ' --whatever --stdin-filename %s'