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Execute(ale#path#Upwards should return the correct path components):
if has('unix')
" Absolute paths should include / on the end.
AssertEqual
\ ['/foo/bar/baz', '/foo/bar', '/foo', '/'],
\ ale#path#Upwards('/foo/bar/baz')
AssertEqual
\ ['/foo/bar/baz', '/foo/bar', '/foo', '/'],
\ ale#path#Upwards('/foo/bar/baz///')
" Relative paths do not.
AssertEqual
\ ['foo/bar/baz', 'foo/bar', 'foo'],
\ ale#path#Upwards('foo/bar/baz')
AssertEqual
\ ['foo2/bar', 'foo2'],
\ ale#path#Upwards('foo//..////foo2////bar')
" Expect an empty List for empty strings.
AssertEqual [], ale#path#Upwards('')
endif
if has('win32')
AssertEqual
\ ['C:\foo\bar\baz', 'C:\foo\bar', 'C:\foo', 'C:\'],
\ ale#path#Upwards('C:\foo\bar\baz')
AssertEqual
\ ['C:\foo\bar\baz', 'C:\foo\bar', 'C:\foo', 'C:\'],
\ ale#path#Upwards('C:\foo\bar\baz\\\')
AssertEqual
\ ['/foo\bar\baz', '/foo\bar', '/foo', '/'],
\ ale#path#Upwards('/foo/bar/baz')
AssertEqual
\ ['foo\bar\baz', 'foo\bar', 'foo'],
\ ale#path#Upwards('foo/bar/baz')
AssertEqual
\ ['foo\bar\baz', 'foo\bar', 'foo'],
\ ale#path#Upwards('foo\bar\baz')
" simplify() is used internally, and should sort out \ paths when actually
" running Windows, which we can't test here.
AssertEqual
\ ['foo2\bar', 'foo2'],
\ ale#path#Upwards('foo//..///foo2////bar')
" Expect an empty List for empty strings.
AssertEqual [], ale#path#Upwards('')
" Paths starting with // return /
AssertEqual
\ ['/foo2\bar', '/foo2', '/'],
\ ale#path#Upwards('//foo//..///foo2////bar')
endif
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