Initial Dever 0.0.1

test/rust/dependency/go/output.rs

@@ -0,0 +1,74 @@
+//! 中间归档只检查文件属性；读取计数与异常文件覆盖不启动 Go 工具。
+
+use super::*;
+use std::os::unix::fs::symlink;
+
+fn stage() -> Stage {
+    let root = std::env::temp_dir().join(format!(
+        "dever-go-output-{}-{}",
+        std::process::id(),
+        std::time::SystemTime::now()
+            .duration_since(std::time::UNIX_EPOCH)
+            .unwrap()
+            .as_nanos()
+    ));
+    fs::DirBuilder::new().mode(0o700).create(&root).unwrap();
+    Stage {
+        root,
+        resources: BTreeMap::new(),
+        written: 0,
+        started: Instant::now(),
+    }
+}
+
+#[test]
+fn go_intermediate_output_checks_metadata_without_reading_archive() {
+    let stage = stage();
+    let path = stage.root.join("package.a");
+    let length = 8 * 1024 * 1024;
+    fs::File::create(&path).unwrap().set_len(length).unwrap();
+    let read_chars = || {
+        fs::read_to_string("/proc/thread-self/io")
+            .unwrap()
+            .lines()
+            .find_map(|line| line.strip_prefix("rchar: "))
+            .unwrap()
+            .parse::<u64>()
+            .unwrap()
+    };
+    let before = read_chars();
+    drop(stage.output(&path).unwrap());
+    let consumed = read_chars() - before;
+    eprintln!("go intermediate: fixture=sparse-zero bytes={length} rchar={consumed}");
+    assert!(
+        consumed < 4096,
+        "read {consumed} bytes for a metadata check"
+    );
+    assert_eq!(fs::metadata(path).unwrap().len(), length);
+}
+
+#[test]
+fn go_output_rejects_links_empty_special_and_oversized_files() {
+    let stage = stage();
+    let path = stage.root.join("output");
+    fs::write(&path, b"archive").unwrap();
+    drop(stage.output(&path).unwrap());
+    let link = stage.root.join("symbolic");
+    symlink(&path, &link).unwrap();
+    assert!(stage.output(&link).is_err());
+    fs::remove_file(link).unwrap();
+    let link = stage.root.join("hard");
+    fs::hard_link(&path, &link).unwrap();
+    assert!(stage.output(&path).is_err());
+    fs::remove_file(link).unwrap();
+    assert!(stage.output(&stage.root).is_err());
+    fs::File::create(&path).unwrap();
+    assert!(stage.output(&path).is_err());
+    fs::File::create(&path)
+        .unwrap()
+        .set_len(128 * 1024 * 1024 + 1)
+        .unwrap();
+    assert!(stage.output(&path).is_err());
+    fs::remove_file(&path).unwrap();
+    assert!(stage.output(&path).is_err());
+}