1 files changed, 62 insertions, 0 deletions
diff --git a/gopls/internal/lsp/testdata/builtins/builtin_args.go b/gopls/internal/lsp/testdata/builtins/builtin_args.go
new file mode 100644
index 000000000..052777fe9
--- /dev/null
+++ b/gopls/internal/lsp/testdata/builtins/builtin_args.go
@@ -0,0 +1,62 @@
+package builtins
+
+func _() {
+	var (
+		aSlice    []int          //@item(builtinSlice, "aSlice", "[]int", "var")
+		aMap      map[string]int //@item(builtinMap, "aMap", "map[string]int", "var")
+		aString   string         //@item(builtinString, "aString", "string", "var")
+		aArray    [0]int         //@item(builtinArray, "aArray", "[0]int", "var")
+		aArrayPtr *[0]int        //@item(builtinArrayPtr, "aArrayPtr", "*[0]int", "var")
+		aChan     chan int       //@item(builtinChan, "aChan", "chan int", "var")
+		aPtr      *int           //@item(builtinPtr, "aPtr", "*int", "var")
+		aInt      int            //@item(builtinInt, "aInt", "int", "var")
+	)
+
+	type (
+		aSliceType []int          //@item(builtinSliceType, "aSliceType", "[]int", "type")
+		aChanType  chan int       //@item(builtinChanType, "aChanType", "chan int", "type")
+		aMapType   map[string]int //@item(builtinMapType, "aMapType", "map[string]int", "type")
+	)
+
+	close() //@rank(")", builtinChan, builtinSlice)
+
+	append() //@rank(")", builtinSlice, builtinChan)
+
+	var _ []byte = append([]byte(nil), ""...) //@rank(") //")
+
+	copy()           //@rank(")", builtinSlice, builtinChan)
+	copy(aSlice, aS) //@rank(")", builtinSlice, builtinString)
+	copy(aS, aSlice) //@rank(",", builtinSlice, builtinString)
+
+	delete()         //@rank(")", builtinMap, builtinChan)
+	delete(aMap, aS) //@rank(")", builtinString, builtinSlice)
+
+	aMapFunc := func() map[int]int { //@item(builtinMapFunc, "aMapFunc", "func() map[int]int", "var")
+		return nil
+	}
+	delete() //@rank(")", builtinMapFunc, builtinSlice)
+
+	len() //@rank(")", builtinSlice, builtinInt),rank(")", builtinMap, builtinInt),rank(")", builtinString, builtinInt),rank(")", builtinArray, builtinInt),rank(")", builtinArrayPtr, builtinPtr),rank(")", builtinChan, builtinInt)
+
+	cap() //@rank(")", builtinSlice, builtinMap),rank(")", builtinArray, builtinString),rank(")", builtinArrayPtr, builtinPtr),rank(")", builtinChan, builtinInt)
+
+	make()              //@rank(")", builtinMapType, int),rank(")", builtinChanType, int),rank(")", builtinSliceType, int),rank(")", builtinMapType, int)
+	make(aSliceType, a) //@rank(")", builtinInt, builtinSlice)
+
+	type myInt int
+	var mi myInt        //@item(builtinMyInt, "mi", "myInt", "var")
+	make(aSliceType, m) //@snippet(")", builtinMyInt, "mi", "mi")
+
+	var _ []int = make() //@rank(")", builtinSliceType, builtinMapType)
+
+	type myStruct struct{}  //@item(builtinStructType, "myStruct", "struct{...}", "struct")
+	var _ *myStruct = new() //@rank(")", builtinStructType, int)
+
+	for k := range a { //@rank(" {", builtinSlice, builtinInt),rank(" {", builtinString, builtinInt),rank(" {", builtinChan, builtinInt),rank(" {", builtinArray, builtinInt),rank(" {", builtinArrayPtr, builtinInt),rank(" {", builtinMap, builtinInt),
+	}
+
+	for k, v := range a { //@rank(" {", builtinSlice, builtinChan)
+	}
+
+	<-a //@rank(" //", builtinChan, builtinInt)
+}