1  Before:
  2    Save g:ale_completion_excluded_words
  3  
  4    let g:ale_completion_excluded_words = []
  5  
  6  After:
  7    Restore
  8  
  9    unlet! b:ale_completion_excluded_words
 10    unlet! b:suggestions
 11  
 12  Execute(Prefix filtering should work for Lists of strings):
 13    AssertEqual
 14    \ ['FooBar', 'foo'],
 15    \ ale#completion#Filter(bufnr(''), '', ['FooBar', 'FongBar', 'baz', 'foo'], 'foo', 0)
 16    AssertEqual
 17    \ ['FooBar', 'FongBar', 'baz', 'foo'],
 18    \ ale#completion#Filter(bufnr(''), '', ['FooBar', 'FongBar', 'baz', 'foo'], '.', 0)
 19    AssertEqual
 20    \ ['FooBar', 'FongBar', 'baz', 'foo'],
 21    \ ale#completion#Filter(bufnr(''), '', ['FooBar', 'FongBar', 'baz', 'foo'], '', 0)
 22  
 23  Execute(Exact filtering should work):
 24    AssertEqual
 25    \ ['foo'],
 26    \ ale#completion#Filter(bufnr(''), '', ['FooBar', 'FongBar', 'baz', 'foo'], 'foo', 1)
 27    AssertEqual
 28    \ ['FooBar', 'FongBar', 'baz', 'foo'],
 29    \ ale#completion#Filter(bufnr(''), '', ['FooBar', 'FongBar', 'baz', 'foo'], '.', 1)
 30    AssertEqual
 31    \ ['Foo'],
 32    \ ale#completion#Filter(bufnr(''), '', ['FooBar', 'FongBar', 'Foo', 'foo'], 'Foo', 1)
 33  
 34  Execute(Prefix filtering should work for completion items):
 35    AssertEqual
 36    \ [{'word': 'FooBar'}, {'word': 'foo'}],
 37    \ ale#completion#Filter(
 38    \   bufnr(''),
 39    \   '',
 40    \   [
 41    \     {'word': 'FooBar'},
 42    \     {'word': 'FongBar'},
 43    \     {'word': 'baz'},
 44    \     {'word': 'foo'},
 45    \   ],
 46    \   'foo',
 47    \   0,
 48    \ )
 49  
 50    AssertEqual
 51    \ [
 52    \   {'word': 'FooBar'},
 53    \   {'word': 'FongBar'},
 54    \   {'word': 'baz'},
 55    \   {'word': 'foo'},
 56    \ ],
 57    \ ale#completion#Filter(
 58    \   bufnr(''),
 59    \   '',
 60    \   [
 61    \     {'word': 'FooBar'},
 62    \     {'word': 'FongBar'},
 63    \     {'word': 'baz'},
 64    \     {'word': 'foo'},
 65    \   ],
 66    \   '.',
 67    \   0,
 68    \ )
 69  
 70  Execute(Excluding words from completion results should work):
 71    let b:ale_completion_excluded_words = ['it', 'describe']
 72  
 73    AssertEqual
 74    \ [{'word': 'Italian'}],
 75    \ ale#completion#Filter(
 76    \   bufnr(''),
 77    \   '',
 78    \   [
 79    \     {'word': 'Italian'},
 80    \     {'word': 'it'},
 81    \   ],
 82    \   'it',
 83    \   0,
 84    \ )
 85  
 86    AssertEqual
 87    \ [{'word': 'Deutsch'}],
 88    \ ale#completion#Filter(
 89    \   bufnr(''),
 90    \   '',
 91    \   [
 92    \     {'word': 'describe'},
 93    \     {'word': 'Deutsch'},
 94    \   ],
 95    \   'de',
 96    \   0,
 97    \ )
 98  
 99    AssertEqual
100    \ [{'word': 'Deutsch'}],
101    \ ale#completion#Filter(
102    \   bufnr(''),
103    \   '',
104    \   [
105    \     {'word': 'describe'},
106    \     {'word': 'Deutsch'},
107    \   ],
108    \   '.',
109    \   0,
110    \ )
111  
112  Execute(Excluding words from completion results should work with lists of Strings):
113    let b:ale_completion_excluded_words = ['it', 'describe']
114  
115    AssertEqual
116    \ ['Italian'],
117    \ ale#completion#Filter(bufnr(''), '', ['Italian', 'it'], 'it', 0)
118    AssertEqual
119    \ ['Deutsch'],
120    \ ale#completion#Filter(bufnr(''), '', ['describe', 'Deutsch'], 'de', 0)
121    AssertEqual
122    \ ['Deutsch'],
123    \ ale#completion#Filter(bufnr(''), '', ['describe', 'Deutsch'], '.', 0)
124    AssertEqual
125    \ ['Deutsch'],
126    \ ale#completion#Filter(bufnr(''), '', ['Deutsch'], '', 0)
127  
128  Execute(Filtering shouldn't modify the original list):
129    let b:ale_completion_excluded_words = ['it', 'describe']
130    let b:suggestions = [{'word': 'describe'}]
131  
132    AssertEqual [], ale#completion#Filter(bufnr(''), '', b:suggestions, '.', 0)
133    AssertEqual b:suggestions, [{'word': 'describe'}]
134    AssertEqual [], ale#completion#Filter(bufnr(''), '', b:suggestions, 'de', 0)
135    AssertEqual b:suggestions, [{'word': 'describe'}]
136  
137  Execute(Filtering should respect filetype triggers):
138    let b:suggestions = [{'word': 'describe'}]
139  
140    AssertEqual b:suggestions, ale#completion#Filter(bufnr(''), '', b:suggestions, '.', 0)
141    AssertEqual b:suggestions, ale#completion#Filter(bufnr(''), 'rust', b:suggestions, '.', 0)
142    AssertEqual b:suggestions, ale#completion#Filter(bufnr(''), 'rust', b:suggestions, '::', 0)