diff --git a/Cargo.lock b/Cargo.lock
index b41f7048..18bfd901 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -343,6 +343,12 @@ dependencies = [
  "windows-sys 0.59.0",
 ]
 
+[[package]]
+name = "comma"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "55b672471b4e9f9e95499ea597ff64941a309b2cdbffcc46f2cc5e2d971fd335"
+
 [[package]]
 name = "console"
 version = "0.15.11"
@@ -1358,6 +1364,18 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "nix"
+version = "0.30.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "74523f3a35e05aba87a1d978330aef40f67b0304ac79c1c00b294c9830543db6"
+dependencies = [
+ "bitflags",
+ "cfg-if",
+ "cfg_aliases",
+ "libc",
+]
+
 [[package]]
 name = "nu-ansi-term"
 version = "0.46.0"
@@ -1802,6 +1820,19 @@ dependencies = [
  "webpki-roots",
 ]
 
+[[package]]
+name = "rexpect"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2c1bcd4ac488e9d2d726d147031cceff5cff6425011ff1914049739770fa4726"
+dependencies = [
+ "comma",
+ "nix",
+ "regex",
+ "tempfile",
+ "thiserror",
+]
+
 [[package]]
 name = "ring"
 version = "0.17.14"
@@ -1910,6 +1941,7 @@ dependencies = [
  "rayon-tracing",
  "regex",
  "reqwest",
+ "rexpect",
  "rv-cache",
  "rv-dirs",
  "rv-ruby",
diff --git a/crates/rv/Cargo.toml b/crates/rv/Cargo.toml
index dea1e9db..d56ac257 100644
--- a/crates/rv/Cargo.toml
+++ b/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"
diff --git a/crates/rv/tests/integration_tests/common.rs b/crates/rv/tests/integration_tests/common.rs
index 47fc0c3f..c10ec3f6 100644
--- a/crates/rv/tests/integration_tests/common.rs
+++ b/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
diff --git a/crates/rv/tests/integration_tests/shell/mod.rs b/crates/rv/tests/integration_tests/shell/mod.rs
index 153d6867..42242271 100644
--- a/crates/rv/tests/integration_tests/shell/mod.rs
+++ b/crates/rv/tests/integration_tests/shell/mod.rs
@@ -1,2 +1,3 @@
 mod env_test;
 mod init_test;
+mod zsh_test;
diff --git a/crates/rv/tests/integration_tests/shell/zsh_test.rs b/crates/rv/tests/integration_tests/shell/zsh_test.rs
new file mode 100644
index 00000000..db3c51cb
--- /dev/null
+++ b/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(())
+}