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+" Test binding arguments to a Funcref.
+
+source check.vim
+
+func MyFunc(arg1, arg2, arg3)
+ return a:arg1 . '/' . a:arg2 . '/' . a:arg3
+endfunc
+
+func MySort(up, one, two)
+ if a:one == a:two
+ return 0
+ endif
+ if a:up
+ return a:one > a:two ? 1 : -1
+ endif
+ return a:one < a:two ? 1 : -1
+endfunc
+
+func MyMap(sub, index, val)
+ return a:val - a:sub
+endfunc
+
+func MyFilter(threshold, index, val)
+ return a:val > a:threshold
+endfunc
+
+func Test_partial_args()
+ let Cb = function('MyFunc', ["foo", "bar"])
+
+ call Cb("zzz")
+ call assert_equal("foo/bar/xxx", Cb("xxx"))
+ call assert_equal("foo/bar/yyy", call(Cb, ["yyy"]))
+ let Cb2 = function(Cb)
+ call assert_equal("foo/bar/zzz", Cb2("zzz"))
+ let Cb3 = function(Cb, ["www"])
+ call assert_equal("foo/bar/www", Cb3())
+
+ let Cb = function('MyFunc', [])
+ call assert_equal("a/b/c", Cb("a", "b", "c"))
+ let Cb2 = function(Cb, [])
+ call assert_equal("a/b/d", Cb2("a", "b", "d"))
+ let Cb3 = function(Cb, ["a", "b"])
+ call assert_equal("a/b/e", Cb3("e"))
+
+ let Sort = function('MySort', [1])
+ call assert_equal([1, 2, 3], sort([3, 1, 2], Sort))
+ let Sort = function('MySort', [0])
+ call assert_equal([3, 2, 1], sort([3, 1, 2], Sort))
+
+ let Map = function('MyMap', [2])
+ call assert_equal([-1, 0, 1], map([1, 2, 3], Map))
+ let Map = function('MyMap', [3])
+ call assert_equal([-2, -1, 0], map([1, 2, 3], Map))
+
+ let Filter = function('MyFilter', [1])
+ call assert_equal([2, 3], filter([1, 2, 3], Filter))
+ let Filter = function('MyFilter', [2])
+ call assert_equal([3], filter([1, 2, 3], Filter))
+endfunc
+
+func MyDictFunc(arg1, arg2) dict
+ return self.name . '/' . a:arg1 . '/' . a:arg2
+endfunc
+
+func Test_partial_dict()
+ let dict = {'name': 'hello'}
+ let Cb = function('MyDictFunc', ["foo", "bar"], dict)
+ call test_garbagecollect_now()
+ call assert_equal("hello/foo/bar", Cb())
+ call assert_fails('Cb("xxx")', 'E492:')
+
+ let Cb = function('MyDictFunc', ["foo"], dict)
+ call assert_equal("hello/foo/xxx", Cb("xxx"))
+ call assert_fails('Cb()', 'E492:')
+
+ let Cb = function('MyDictFunc', [], dict)
+ call assert_equal("hello/ttt/xxx", Cb("ttt", "xxx"))
+ call assert_fails('Cb("yyy")', 'E492:')
+
+ let Cb = function('MyDictFunc', dict)
+ call assert_equal("hello/xxx/yyy", Cb("xxx", "yyy"))
+ call assert_fails('Cb("fff")', 'E492:')
+
+ let Cb = function('MyDictFunc', dict)
+ call assert_equal({"foo": "hello/foo/1", "bar": "hello/bar/2"}, map({"foo": 1, "bar": 2}, Cb))
+
+ let dict = {"tr": function('tr', ['hello', 'h', 'H'])}
+ call assert_equal("Hello", dict.tr())
+
+ call assert_fails("let F=function('setloclist', 10)", "E923:")
+ call assert_fails("let F=function('setloclist', [], [])", "E1206:")
+endfunc
+
+func Test_partial_implicit()
+ let dict = {'name': 'foo'}
+ func dict.MyFunc(arg) dict
+ return self.name . '/' . a:arg
+ endfunc
+
+ call assert_equal('foo/bar', dict.MyFunc('bar'))
+
+ call assert_fails('let func = dict.MyFunc', 'E704:')
+ let Func = dict.MyFunc
+ call assert_equal('foo/aaa', Func('aaa'))
+
+ let Func = function(dict.MyFunc, ['bbb'])
+ call assert_equal('foo/bbb', Func())
+endfunc
+
+fun InnerCall(funcref)
+ return a:funcref
+endfu
+
+fun OuterCall()
+ let opt = { 'func' : function('max') }
+ call InnerCall(opt.func)
+endfu
+
+func Test_function_in_dict()
+ call OuterCall()
+endfunc
+
+func s:cache_clear() dict
+ return self.name
+endfunc
+
+func Test_script_function_in_dict()
+ let s:obj = {'name': 'foo'}
+ let s:obj2 = {'name': 'bar'}
+
+ let s:obj['clear'] = function('s:cache_clear')
+
+ call assert_equal('foo', s:obj.clear())
+ let F = s:obj.clear
+ call assert_equal('foo', F())
+ call assert_equal('foo', call(s:obj.clear, [], s:obj))
+ call assert_equal('bar', call(s:obj.clear, [], s:obj2))
+
+ let s:obj2['clear'] = function('s:cache_clear')
+ call assert_equal('bar', s:obj2.clear())
+ let B = s:obj2.clear
+ call assert_equal('bar', B())
+endfunc
+
+func s:cache_arg(arg) dict
+ let s:result = self.name . '/' . a:arg
+ return s:result
+endfunc
+
+func Test_script_function_in_dict_arg()
+ let s:obj = {'name': 'foo'}
+ let s:obj['clear'] = function('s:cache_arg')
+
+ call assert_equal('foo/bar', s:obj.clear('bar'))
+ let F = s:obj.clear
+ let s:result = ''
+ call assert_equal('foo/bar', F('bar'))
+ call assert_equal('foo/bar', s:result)
+
+ let s:obj['clear'] = function('s:cache_arg', ['bar'])
+ call assert_equal('foo/bar', s:obj.clear())
+ let s:result = ''
+ call s:obj.clear()
+ call assert_equal('foo/bar', s:result)
+
+ let F = s:obj.clear
+ call assert_equal('foo/bar', F())
+ let s:result = ''
+ call F()
+ call assert_equal('foo/bar', s:result)
+
+ call assert_equal('foo/bar', call(s:obj.clear, [], s:obj))
+endfunc
+
+func Test_partial_exists()
+ let F = function('MyFunc')
+ call assert_true(exists('*F'))
+ let lF = [F]
+ call assert_true(exists('*lF[0]'))
+
+ let F = function('MyFunc', ['arg'])
+ call assert_true(exists('*F'))
+ let lF = [F]
+ call assert_true(exists('*lF[0]'))
+endfunc
+
+func Test_partial_string()
+ let F = function('MyFunc')
+ call assert_equal("function('MyFunc')", string(F))
+ let F = function('MyFunc', ['foo'])
+ call assert_equal("function('MyFunc', ['foo'])", string(F))
+ let F = function('MyFunc', ['foo', 'bar'])
+ call assert_equal("function('MyFunc', ['foo', 'bar'])", string(F))
+ let d = {'one': 1}
+ let F = function('MyFunc', d)
+ call assert_equal("function('MyFunc', {'one': 1})", string(F))
+ let F = function('MyFunc', ['foo'], d)
+ call assert_equal("function('MyFunc', ['foo'], {'one': 1})", string(F))
+ call assert_equal("function('')", string(test_null_function()))
+ call assert_equal("function('')", string(test_null_partial()))
+endfunc
+
+func Test_func_unref()
+ let obj = {}
+ function! obj.func() abort
+ endfunction
+ let funcnumber = matchstr(string(obj.func), '^function(''\zs.\{-}\ze''')
+ call assert_true(exists('*{' . funcnumber . '}'))
+ unlet obj
+ call assert_false(exists('*{' . funcnumber . '}'))
+endfunc
+
+func Test_tostring()
+ let d = {}
+ let d.d = d
+ function d.test3()
+ echo 42
+ endfunction
+ try
+ call string(d.test3)
+ catch
+ call assert_true(v:false, v:exception)
+ endtry
+endfunc
+
+func Test_redefine_dict_func()
+ let d = {}
+ function d.test4()
+ endfunction
+ let d.test4 = d.test4
+ try
+ function! d.test4(name)
+ endfunction
+ catch
+ call assert_true(v:errmsg, v:exception)
+ endtry
+endfunc
+
+func Test_bind_in_python()
+ CheckFeature python
+ let g:d = {}
+ function g:d.test2()
+ endfunction
+ python import vim
+ try
+ call assert_equal(pyeval('vim.bindeval("g:d.test2")'), g:d.test2)
+ catch
+ call assert_true(v:false, v:exception)
+ endtry
+endfunc
+
+" This caused double free on exit if EXITFREE is defined.
+func Test_cyclic_list_arg()
+ let l = []
+ let Pt = function('string', [l])
+ call add(l, Pt)
+ unlet l
+ unlet Pt
+endfunc
+
+" This caused double free on exit if EXITFREE is defined.
+func Test_cyclic_dict_arg()
+ let d = {}
+ let Pt = function('string', [d])
+ let d.Pt = Pt
+ unlet d
+ unlet Pt
+endfunc
+
+func Ignored3(job1, job2, status)
+endfunc
+
+func Test_cycle_partial_job()
+ CheckFeature job
+ let job = job_start('echo')
+ call job_setoptions(job, {'exit_cb': function('Ignored3', [job])})
+ unlet job
+endfunc
+
+func Ignored2(job, status)
+endfunc
+
+func Test_ref_job_partial_dict()
+ CheckFeature job
+ let g:ref_job = job_start('echo')
+ let d = {'a': 'b'}
+ call job_setoptions(g:ref_job, {'exit_cb': function('Ignored2', [], d)})
+ call test_garbagecollect_now()
+endfunc
+
+func Test_auto_partial_rebind()
+ let dict1 = {'name': 'dict1'}
+ func! dict1.f1()
+ return self.name
+ endfunc
+ let dict1.f2 = function(dict1.f1, dict1)
+
+ call assert_equal('dict1', dict1.f1())
+ call assert_equal('dict1', dict1['f1']())
+ call assert_equal('dict1', dict1.f2())
+ call assert_equal('dict1', dict1['f2']())
+
+ let dict2 = {'name': 'dict2'}
+ let dict2.f1 = dict1.f1
+ let dict2.f2 = dict1.f2
+
+ call assert_equal('dict2', dict2.f1())
+ call assert_equal('dict2', dict2['f1']())
+ call assert_equal('dict1', dict2.f2())
+ call assert_equal('dict1', dict2['f2']())
+endfunc
+
+func Test_get_partial_items()
+ let dict = {'name': 'hello'}
+ let args = ["foo", "bar"]
+ let Func = function('MyDictFunc')
+ let Cb = function('MyDictFunc', args, dict)
+
+ call assert_equal(Func, get(Cb, 'func'))
+ call assert_equal('MyDictFunc', get(Cb, 'name'))
+ call assert_equal(args, get(Cb, 'args'))
+ call assert_equal(dict, get(Cb, 'dict'))
+ call assert_fails('call get(Cb, "xxx")', 'E475:')
+
+ call assert_equal(Func, get(Func, 'func'))
+ call assert_equal('MyDictFunc', get(Func, 'name'))
+ call assert_equal([], get(Func, 'args'))
+ call assert_true(empty( get(Func, 'dict')))
+
+ let P = function('substitute', ['hello there', 'there'])
+ let dict = {'partial has': 'no dict'}
+ call assert_equal(dict, get(P, 'dict', dict))
+ call assert_equal(0, get(l:P, 'dict'))
+endfunc
+
+func Test_compare_partials()
+ let d1 = {}
+ let d2 = {}
+
+ function d1.f1() dict
+ endfunction
+
+ function d1.f2() dict
+ endfunction
+
+ let F1 = get(d1, 'f1')
+ let F2 = get(d1, 'f2')
+
+ let F1d1 = function(F1, d1)
+ let F2d1 = function(F2, d2)
+ let F1d1a1 = function(F1d1, [1])
+ let F1d1a12 = function(F1d1, [1, 2])
+ let F1a1 = function(F1, [1])
+ let F1a2 = function(F1, [2])
+ let F1d2 = function(F1, d2)
+ let d3 = {'f1': F1, 'f2': F2}
+ let F1d3 = function(F1, d3)
+ let F1ad1 = function(F1, [d1])
+ let F1ad3 = function(F1, [d3])
+
+ call assert_match('^function(''\d\+'')$', string(F1)) " Not a partial
+ call assert_match('^function(''\d\+'')$', string(F2)) " Not a partial
+ call assert_match('^function(''\d\+'', {.*})$', string(F1d1)) " A partial
+ call assert_match('^function(''\d\+'', {.*})$', string(F2d1)) " A partial
+ call assert_match('^function(''\d\+'', \[.*\])$', string(F1a1)) " No dict
+
+ " !=
+ let X = F1
+ call assert_false(F1 != X) " same function
+ let X = F1d1
+ call assert_false(F1d1 != X) " same partial
+ let X = F1d1a1
+ call assert_false(F1d1a1 != X) " same partial
+ let X = F1a1
+ call assert_false(F1a1 != X) " same partial
+
+ call assert_true(F1 != F2) " Different functions
+ call assert_true(F1 != F1d1) " Partial /= non-partial
+ call assert_true(F1d1a1 != F1d1a12) " Different number of arguments
+ call assert_true(F1a1 != F1d1a12) " One has no dict
+ call assert_true(F1a1 != F1a2) " Different arguments
+ call assert_true(F1d2 != F1d1) " Different dictionaries
+ call assert_false(F1d1 != F1d3) " Equal dictionaries, even though d1 isnot d3
+
+ " isnot, option 1
+ call assert_true(F1 isnot# F2) " Different functions
+ call assert_true(F1 isnot# F1d1) " Partial /= non-partial
+ call assert_true(F1d1 isnot# F1d3) " d1 isnot d3, even though d1 == d3
+ call assert_true(F1a1 isnot# F1d1a12) " One has no dict
+ call assert_true(F1a1 isnot# F1a2) " Different number of arguments
+ call assert_true(F1ad1 isnot# F1ad3) " In arguments d1 isnot d3
+
+ " isnot, option 2
+ call assert_true(F1 isnot# F2) " Different functions
+ call assert_true(F1 isnot# F1d1) " Partial /= non-partial
+ call assert_true(d1.f1 isnot# d1.f1) " handle_subscript creates new partial each time
+
+ " compare two null partials
+ let N1 = test_null_partial()
+ let N2 = N1
+ call assert_true(N1 is N2)
+ call assert_true(N1 == N2)
+
+ " compare a partial and a null partial
+ call assert_false(N1 == F1)
+ call assert_false(F1 is N1)
+endfunc
+
+" vim: shiftwidth=2 sts=2 expandtab
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