Function TestVM_OpCall_InvalidNumberOfArguments

vm/vm_test.go:1527–1541

(t *testing.T)

}

func TestVM_OpCall_InvalidNumberOfArguments(t *testing.T) {
	// Test that the VM validates argument count at runtime.
	// Compile without Env() so compiler generates OpCall without type info.
	program, err := expr.Compile(`fn(1, 2)`)
	require.NoError(t, err)

	// Run with a function that has different arity
	env := map[string]any{
		"fn": func(a int) int { return a },
	}

	_, err = expr.Run(program, env)
	require.Error(t, err)
	require.Contains(t, err.Error(), "invalid number of arguments")
}

func TestVM_OpCall_InvalidNumberOfArguments_Variadic(t *testing.T) {
	// Test variadic function with too few arguments.