add an integration test for zsh cd hook

crates/rv/Cargo.toml

@@ -58,3 +58,4 @@ indoc = { workspace = true }
 fs-err = { workspace = true }
 camino-tempfile-ext = { workspace = true }
 mockito = "1.4.0"
+rexpect = "0.6.2"

crates/rv/tests/integration_tests/common.rs

@@ -53,7 +53,11 @@ impl RvTest {
     }
 
     pub fn rv_command(&self) -> Command {
-        let mut cmd = Command::new(env!("CARGO_BIN_EXE_rv"));
+        self.command(env!("CARGO_BIN_EXE_rv"))
+    }
+
+    pub fn command<S: AsRef<std::ffi::OsStr>>(&self, program: S) -> Command {
+        let mut cmd = Command::new(program);
         cmd.current_dir(&self.cwd);
         cmd.env_clear().envs(&self.env);
         cmd

crates/rv/tests/integration_tests/shell/mod.rs

@@ -1,2 +1,3 @@
 mod env_test;
 mod init_test;
+mod zsh_test;

crates/rv/tests/integration_tests/shell/zsh_test.rs

@@ -0,0 +1,100 @@
+use rexpect::{reader::Options, session::PtyReplSession};
+
+use crate::common::RvTest;
+
+fn make_session(test: &RvTest) -> Result<PtyReplSession, Box<dyn std::error::Error>> {
+    let mut cmd = test.command("zsh");
+    cmd.arg("--no-rcs").arg("--login").arg("--interactive");
+    cmd.env("TERM", "xterm-256color")
+        .env("COLUMNS", "1000")
+        .env_remove("RV_TEST_EXE")
+        .env("HOST", ">>>")
+        .env("PATH", "/bin");
+    let pty_session = rexpect::spawn_with_options(
+        cmd,
+        Options {
+            timeout_ms: Some(1000),
+            strip_ansi_escape_codes: true,
+        },
+    )?;
+    let mut session = PtyReplSession {
+        prompt: "%                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       \r \r\r[PEXPECT]$ ".to_owned(),
+        pty_session,
+        quit_command: Some("builtin exit".to_owned()),
+        echo_on: true,
+    };
+
+    session.send_line("prompt restore")?;
+    session.send_line(r"PS1='[PEXPECT]%(!.#.$) '")?;
+    session.send_line(r"unset RPROMPT")?;
+    session.send_line(r"unset PROMPT_COMMAND")?;
+
+    session.wait_for_prompt()?;
+    session.send_line(&format!(
+        "eval \"$({} shell init zsh)\"",
+        test.rv_command().get_program().display()
+    ))?;
+    assert_eq!(session.wait_for_prompt()?.trim(), "");
+
+    Ok(session)
+}
+
+#[test]
+fn test_no_rubies() -> Result<(), Box<dyn std::error::Error>> {
+    let test = RvTest::new();
+    let mut session = make_session(&test)?;
+    session.send_line("mkdir foobartest")?;
+    session.wait_for_prompt()?;
+    session.send_line("cd foobartest")?;
+    assert_eq!(session.wait_for_prompt()?.trim(), "");
+    session.send_line("cd ..")?;
+    session.send_line(r"echo '3.4' > foobartest/.ruby-version")?;
+    session.send_line("cd foobartest")?;
+    assert_eq!(session.wait_for_prompt()?.trim(), "");
+    session.send_line(&format!(
+        "{} ruby pin",
+        test.rv_command().get_program().display()
+    ))?;
+    session.exp_string("/foobartest is pinned to Ruby 3.4")?;
+    session.wait_for_prompt()?;
+    session.send_line("cd ..")?;
+    assert_eq!(session.wait_for_prompt()?.trim(), "");
+
+    Ok(())
+}
+
+#[test]
+fn test_rubies() -> Result<(), Box<dyn std::error::Error>> {
+    let test = RvTest::new();
+    test.create_ruby_dir("3.3.4");
+    test.create_ruby_dir("3.4.1");
+    let mut session = make_session(&test)?;
+    session.send_line("mkdir foobartest")?;
+    session.wait_for_prompt()?;
+    session.send_line("cd foobartest")?;
+    assert_eq!(session.wait_for_prompt()?.trim(), "");
+    session.send_line("cd ..")?;
+    session.send_line(r"echo '3.3' > foobartest/.ruby-version")?;
+    session.send_line("cd foobartest")?;
+    assert_eq!(session.wait_for_prompt()?.trim(), "");
+    session.send_line(&format!(
+        "{} ruby pin",
+        test.rv_command().get_program().display()
+    ))?;
+    session.exp_string("/foobartest is pinned to Ruby 3.3")?;
+    session.wait_for_prompt()?;
+    session.send_line("ruby")?;
+    assert_eq!(
+        session.wait_for_prompt()?.trim(),
+        "ruby\r\n3.3.4\r\naarch64-darwin23\r\naarch64\r\ndarwin23"
+    );
+    session.send_line("cd ..")?;
+    assert_eq!(session.wait_for_prompt()?.trim(), "");
+    session.send_line("ruby")?;
+    assert_eq!(
+        session.wait_for_prompt()?.trim(),
+        "ruby\r\n3.4.1\r\naarch64-darwin23\r\naarch64\r\ndarwin23"
+    );
+
+    Ok(())
+}