use std::ops::{Deref, DerefMut}; use crate::*; use super::VimTestContext; pub struct VimBindingTestContext<'a, const COUNT: usize> {    cx: VimTestContext<'a>,    keystrokes_under_test: [&'static str; COUNT],    mode_before: Mode,    mode_after: Mode,} impl<'a, const COUNT: usize> VimBindingTestContext<'a, COUNT> {    pub fn new(        keystrokes_under_test: [&'static str; COUNT],        mode_before: Mode,        mode_after: Mode,        cx: VimTestContext<'a>,    ) -> Self {        Self {            cx,            keystrokes_under_test,            mode_before,            mode_after,        }    }     pub fn binding<const NEW_COUNT: usize>(        self,        keystrokes_under_test: [&'static str; NEW_COUNT],    ) -> VimBindingTestContext<'a, NEW_COUNT> {        VimBindingTestContext {            keystrokes_under_test,            cx: self.cx,            mode_before: self.mode_before,            mode_after: self.mode_after,        }    }     pub fn assert(&mut self, initial_state: &str, state_after: &str) {        self.cx.assert_binding(            self.keystrokes_under_test,            initial_state,            self.mode_before,            state_after,            self.mode_after,        )    }} impl<'a, const COUNT: usize> Deref for VimBindingTestContext<'a, COUNT> {    type Target = VimTestContext<'a>;     fn deref(&self) -> &Self::Target {        &self.cx    }} impl<'a, const COUNT: usize> DerefMut for VimBindingTestContext<'a, COUNT> {    fn deref_mut(&mut self) -> &mut Self::Target {        &mut self.cx    }}