add e2e tests for `latest`

e2e/__snapshots__/latest.test.ts.snap

@@ -0,0 +1,32 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`Bash installs latest: Bash 1`] = `
+"set -e
+eval "$(fnm env)"
+fnm install --latest
+(fnm ls) | grep latest || (echo "Expected output to contain latest" && exit 1)
+fnm use 'latest'"
+`;
+
+exports[`Fish installs latest: Fish 1`] = `
+"fnm env | source
+fnm install --latest
+begin; fnm ls; end | grep latest; or echo "Expected output to contain latest" && exit 1
+fnm use 'latest'"
+`;
+
+exports[`PowerShell installs latest: PowerShell 1`] = `
+"$ErrorActionPreference = "Stop"
+fnm env | Out-String | Invoke-Expression
+fnm install --latest
+$($__out__ = $(fnm ls | Select-String latest); if ($__out__ -eq $null) { exit 1 } else { $__out__ })
+fnm use 'latest'"
+`;
+
+exports[`Zsh installs latest: Zsh 1`] = `
+"set -e
+eval "$(fnm env)"
+fnm install --latest
+(fnm ls) | grep latest || (echo "Expected output to contain latest" && exit 1)
+fnm use 'latest'"
+`;

e2e/latest.test.ts

@@ -0,0 +1,19 @@
+import { script } from "./shellcode/script.js"
+import { Bash, Fish, PowerShell, Zsh } from "./shellcode/shells.js"
+import describe from "./describe.js"
+
+for (const shell of [Bash, Zsh, Fish, PowerShell]) {
+  describe(shell, () => {
+    test(`installs latest`, async () => {
+      await script(shell)
+        .then(shell.env({}))
+        .then(shell.call("fnm", ["install", "--latest"]))
+        .then(
+          shell.scriptOutputContains(shell.call("fnm", ["ls"]), "latest")
+        )
+        .then(shell.call("fnm", ["use", "'latest'"]))
+        .takeSnapshot(shell)
+        .execute(shell)
+    })
+  })
+}