#3633 - Move linter tests into test/linter

test/linter/test_lessc.vader

@@ -0,0 +1,46 @@
+Before:
+  call ale#assert#SetUpLinterTest('less', 'lessc')
+  call ale#test#SetFilename('testfile.less')
+
+  unlet! b:executable
+
+After:
+  unlet! b:executable
+
+  call ale#assert#TearDownLinterTest()
+
+Execute(node_modules directories should be discovered):
+  call ale#test#SetFilename('../test-files/lessc/nested/testfile.less')
+
+  let b:executable = ale#path#Simplify(
+  \   g:dir
+  \   . '/../test-files/lessc/node_modules/.bin/lessc'
+  \)
+
+  AssertLinter b:executable, ale#Escape(b:executable)
+  \ . ' --no-color --lint'
+  \ . ' --include-path='
+  \ . ale#Escape(ale#path#Simplify(g:dir . '/../test-files/lessc/nested'))
+  \ . ' -'
+
+Execute(The global override should work):
+  let b:ale_less_lessc_executable = 'foobar'
+  let b:ale_less_lessc_use_global = 1
+
+  call ale#test#SetFilename('../test-files/lessc/nested/testfile.less')
+
+  AssertLinter 'foobar', ale#Escape('foobar')
+  \ . ' --no-color --lint'
+  \ . ' --include-path='
+  \ . ale#Escape(ale#path#Simplify(g:dir . '/../test-files/lessc/nested'))
+  \ . ' -'
+
+Execute(Extra options should be configurable):
+  let b:ale_less_lessc_options = '--whatever'
+
+  AssertLinter 'lessc', ale#Escape('lessc')
+  \ . ' --no-color --lint'
+  \ . ' --include-path='
+  \ . ale#Escape(ale#path#Simplify(g:dir))
+  \ . ' --whatever'
+  \ . ' -'