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-rw-r--r--src/testdir/test_vim9_func.vim15
1 files changed, 15 insertions, 0 deletions
diff --git a/src/testdir/test_vim9_func.vim b/src/testdir/test_vim9_func.vim
index 73d8e37aa..2697c29e4 100644
--- a/src/testdir/test_vim9_func.vim
+++ b/src/testdir/test_vim9_func.vim
@@ -752,11 +752,26 @@ def Test_call_lambda_args()
CheckDefFailure(lines, 'E1167:')
enddef
+def FilterWithCond(x: string, Cond: func(string): bool): bool
+ return Cond(x)
+enddef
+
def Test_lambda_return_type()
var lines =<< trim END
var Ref = (): => 123
END
CheckDefAndScriptFailure(lines, 'E1157:', 1)
+
+ # this works
+ for x in ['foo', 'boo']
+ echo FilterWithCond(x, (v) => v =~ '^b')
+ endfor
+
+ # this fails
+ lines =<< trim END
+ echo FilterWithCond('foo', (v) => v .. '^b')
+ END
+ CheckDefAndScriptFailure(lines, 'E1013: Argument 2: type mismatch, expected func(string): bool but got func(any): string', 1)
enddef
def Test_lambda_uses_assigned_var()