[feat] implement backend abstraction, dynamic backend selection, and GPU feature integration

crates/polyscribe-cli/tests/integration_aux.rs

@@ -0,0 +1,78 @@
+// SPDX-License-Identifier: MIT
+// Copyright (c) 2025 <COPYRIGHT HOLDER>. All rights reserved.
+
+use std::process::Command;
+
+fn bin() -> &'static str {
+    env!("CARGO_BIN_EXE_polyscribe")
+}
+
+#[test]
+fn aux_completions_bash_outputs_script() {
+    let out = Command::new(bin())
+        .arg("completions")
+        .arg("bash")
+        .output()
+        .expect("failed to run polyscribe completions bash");
+    assert!(
+        out.status.success(),
+        "completions bash exited with failure: {:?}",
+        out.status
+    );
+    let stdout = String::from_utf8(out.stdout).expect("stdout not utf-8");
+    assert!(
+        !stdout.trim().is_empty(),
+        "completions bash stdout is empty"
+    );
+    // Heuristic: bash completion scripts often contain 'complete -F' lines
+    assert!(
+        stdout.contains("complete") || stdout.contains("_polyscribe"),
+        "bash completion script did not contain expected markers"
+    );
+}
+
+#[test]
+fn aux_completions_zsh_outputs_script() {
+    let out = Command::new(bin())
+        .arg("completions")
+        .arg("zsh")
+        .output()
+        .expect("failed to run polyscribe completions zsh");
+    assert!(
+        out.status.success(),
+        "completions zsh exited with failure: {:?}",
+        out.status
+    );
+    let stdout = String::from_utf8(out.stdout).expect("stdout not utf-8");
+    assert!(!stdout.trim().is_empty(), "completions zsh stdout is empty");
+    // Heuristic: zsh completion scripts often start with '#compdef'
+    assert!(
+        stdout.contains("#compdef") || stdout.contains("#compdef polyscribe"),
+        "zsh completion script did not contain expected markers"
+    );
+}
+
+#[test]
+fn aux_man_outputs_roff() {
+    let out = Command::new(bin())
+        .arg("man")
+        .output()
+        .expect("failed to run polyscribe man");
+    assert!(
+        out.status.success(),
+        "man exited with failure: {:?}",
+        out.status
+    );
+    let stdout = String::from_utf8(out.stdout).expect("stdout not utf-8");
+    assert!(!stdout.trim().is_empty(), "man stdout is empty");
+    // clap_mangen typically emits roff with .TH and/or section headers
+    let looks_like_roff = stdout.contains(".TH ")
+        || stdout.starts_with(".TH")
+        || stdout.contains(".SH NAME")
+        || stdout.contains(".SH SYNOPSIS");
+    assert!(
+        looks_like_roff,
+        "man output does not look like a roff manpage; got: {}",
+        &stdout.lines().take(3).collect::<Vec<_>>().join(" | ")
+    );
+}