go: support audit command

Author: Gabriel Francisco Mandaji

scfw/package_managers/go.py

@@ -342,6 +342,27 @@ def _normalize_command(self, command: list[str]) -> list[str]:
 
         return [self._executable] + command[1:]
 
+    def list_installed_packages(self) -> list[Package]:
+        """
+        List all installed packages.
+
+        Returns:
+            A `list[Package]` representing all currently installed packages.
+        """
+        def line_to_package(line: str) -> Optional[Package]:
+            # All supported versions adhere to this format
+            components = line.strip().split()
+            if len(components) == 2:
+                return Package(self.ecosystem(), components[0], components[1])
+            return None
+
+        try:
+            go_list_cmd = [self._executable, "list", "-m", "all"]
+            list_cmd = subprocess.run(go_list_cmd, check=True, text=True, capture_output=True)
+            return list(filter(None, map(line_to_package, list_cmd.stdout.split('\n'))))
+        except subprocess.CalledProcessError:
+            raise RuntimeError("Failed to list go installed packages")
+
 
 class GoModNotFoundError(Exception):
     """

tests/package_managers/test_go_class.py

@@ -84,6 +84,15 @@ def test_go_command_would_install_local(new_go_project):
         assert base_go.get_go_dir_contents() == global_init_state
 
 
+def test_go_list_installed_packages(new_go_project):
+    """
+    Test that `Go.list_installed_packages` correctly parses `go` output.
+    """
+    target = Package(ECOSYSTEM.Go, TARGET, LATEST_VERSION)
+    _install_target(new_go_project)
+    assert [target] == PACKAGE_MANAGER.list_installed_packages()
+
+
 def _install_target(project: GoProject):
     """
     Install the target package to the provided directory and write a dummy source file.