Merge pull request #2920 from ConradIrwin/prettier-standard-stdin

Fix prettier_standard to respect the configuration file

test/fixers/test_prettier_standard_callback.vader

@@ -0,0 +1,19 @@
+Before:
+  call ale#assert#SetUpFixerTest('javascript', 'prettier_standard')
+
+  silent cd ..
+  silent cd command_callback
+  let g:dir = getcwd()
+
+After:
+  call ale#assert#TearDownFixerTest()
+
+Execute(The prettier callback should return the correct default values):
+  call ale#test#SetFilename('../prettier-test-files/testfile.js')
+
+  AssertFixer
+  \ {
+  \   'command': ale#Escape(g:ale_javascript_prettier_standard_executable)
+  \     . ' --stdin'
+  \     . ' --stdin-filepath=%s ',
+  \ }