Function TestCustomMacro

cel/cel_test.go:831–870

(t *testing.T)

}

func TestCustomMacro(t *testing.T) {
	joinMacro := NewReceiverMacro("join", 1,
		func(meh MacroExprHelper, iterRange *exprpb.Expr, args []*exprpb.Expr) (*exprpb.Expr, *Error) {
			delim := args[0]
			iterIdent := meh.Ident("__iter__")
			accuIdent := meh.AccuIdent()
			accuInit := meh.LiteralString("")
			condition := meh.LiteralBool(true)
			step := meh.GlobalCall(
				// __result__.size() > 0 ? __result__  + delim + __iter__ : __iter__
				operators.Conditional,
				meh.GlobalCall(operators.Greater, meh.ReceiverCall("size", accuIdent), meh.LiteralInt(0)),
				meh.GlobalCall(operators.Add, meh.GlobalCall(operators.Add, accuIdent, delim), iterIdent),
				iterIdent)
			return meh.Fold(
				"__iter__",
				iterRange,
				accuIdent.GetIdentExpr().GetName(),
				accuInit,
				condition,
				step,
				accuIdent), nil
		})
	env := testEnv(t, Macros(joinMacro))
	ast, iss := env.Compile(`['hello', 'cel', 'friend'].join(',')`)
	if iss.Err() != nil {
		t.Fatal(iss.Err())
	}
	prg, err := env.Program(ast, EvalOptions(OptExhaustiveEval))
	if err != nil {
		t.Fatalf("program creation error: %s\n", err)
	}
	out, _, err := prg.Eval(NoVars())
	if err != nil {
		t.Fatal(err)
	}
	if out.Equal(types.String("hello,cel,friend")) != types.True {
		t.Errorf("got %v, wanted 'hello,cel,friend'", out)
	}
}

func TestMacroInterop(t *testing.T) {
	existsOneMacro := NewReceiverMacro("exists_one", 2,