fix install script latest version parsing

Signed-off-by: Sodawyx <sodawyx@126.com>

Author: Sodawyx

scripts/install.sh

@@ -58,7 +58,7 @@ info "Detected target: $TARGET"
 if [ -z "$VERSION" ]; then
     info "Resolving latest release from github.com/${REPO}"
     VERSION=$($DOWNLOAD "https://api.github.com/repos/${REPO}/releases/latest" \
-        | grep '"tag_name"' | head -1 | sed -E 's/.*"tag_name":\s*"([^"]+)".*/\1/')
+        | grep '"tag_name"' | head -1 | sed -E 's/.*"tag_name":[[:space:]]*"([^"]+)".*/\1/')
     [ -n "$VERSION" ] || err "could not resolve latest release tag"
 fi
 info "Version: $VERSION"

tests/integration/test_install_script.py

@@ -0,0 +1,97 @@
+"""Integration tests for the Unix installer script."""
+
+import os
+import stat
+import subprocess
+from pathlib import Path
+
+
+def _write_executable(path: Path, content: str) -> None:
+    path.write_text(content)
+    path.chmod(path.stat().st_mode | stat.S_IXUSR)
+
+
+def test_install_sh_parses_latest_release_tag_on_posix_sed(tmp_path):
+    repo_root = Path(__file__).resolve().parents[2]
+    fake_bin = tmp_path / "bin"
+    fake_bin.mkdir()
+    install_dir = tmp_path / "install"
+
+    calls = tmp_path / "curl-calls.txt"
+    _write_executable(
+        fake_bin / "curl",
+        f"""#!/usr/bin/env sh
+set -eu
+url="${{@:$#}}"
+printf '%s\\n' "$url" >> "{calls}"
+case "$url" in
+  *"/releases/latest")
+    printf '%s\\n' '{{'
+    printf '%s\\n' '  "tag_name": "v0.1.0",'
+    printf '%s\\n' '}}'
+    ;;
+  *".sha256")
+    printf '%s\\n' 'expected-sha  agentrun-0.1.0-darwin-arm64.tar.gz'
+    ;;
+  *)
+    printf '%s\\n' 'fake archive'
+    ;;
+esac
+""",
+    )
+    _write_executable(
+        fake_bin / "uname",
+        """#!/usr/bin/env sh
+case "${1:-}" in
+  -s) printf '%s\n' Darwin ;;
+  -m) printf '%s\n' arm64 ;;
+  *) printf '%s\n' Darwin ;;
+esac
+""",
+    )
+    _write_executable(
+        fake_bin / "tar",
+        """#!/usr/bin/env sh
+while [ "$#" -gt 0 ]; do
+  if [ "$1" = "-C" ]; then
+    shift
+    install_dir="$1"
+    break
+  fi
+  shift
+done
+printf '%s\n' '#!/usr/bin/env sh' > "$install_dir/agentrun"
+chmod +x "$install_dir/agentrun"
+""",
+    )
+    _write_executable(
+        fake_bin / "shasum",
+        """#!/usr/bin/env sh
+printf '%s\n' 'expected-sha  agentrun-0.1.0-darwin-arm64.tar.gz'
+""",
+    )
+
+    env = {
+        **os.environ,
+        "PATH": f"{fake_bin}:{os.environ['PATH']}",
+        "AGENTRUN_INSTALL": str(install_dir),
+        "AGENTRUN_REPO": "Serverless-Devs/agentrun-cli",
+    }
+
+    result = subprocess.run(
+        ["sh", str(repo_root / "scripts" / "install.sh")],
+        env=env,
+        text=True,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        check=False,
+    )
+
+    assert result.returncode == 0, result.stdout + result.stderr
+    assert "Version: v0.1.0" in result.stdout
+    assert "Downloading agentrun-0.1.0-darwin-arm64.tar.gz" in result.stdout
+    assert (install_dir / "agentrun").exists()
+    assert (
+        "https://github.com/Serverless-Devs/agentrun-cli/releases/download/"
+        "v0.1.0/agentrun-0.1.0-darwin-arm64.tar.gz"
+    ) in calls.read_text()