tests: basic pkgrepo tests, clone pmaports (MR 2252)

Signed-off-by: Caleb Connolly <caleb@postmarketos.org>

pmb/core/test_pkgrepo.py

@@ -0,0 +1,40 @@
+import pytest
+
+import pmb.helpers.git
+import pmb.helpers.run
+from pmb.core.pkgrepo import pkgrepo_paths, pkgrepo_default_path
+
+
+@pytest.mark.parametrize("config_file", ["no-repos"], indirect=True)
+def test_pkgrepo_paths_no_repos(pmb_args):
+    """Test pkgrepo_paths() with no repositories. Should raise a RuntimeError."""
+    with pytest.raises(RuntimeError):
+        paths = pkgrepo_paths()
+        print(paths)
+
+def test_pkgrepo_pmaports(pmaports, monkeypatch):
+    """Test pkgrepo_paths() with pmaports repository and systemd extra repo"""
+
+    # Disable results caching
+    pkgrepo_paths.cache_disable()
+
+    paths = pkgrepo_paths()
+    print(f"[master] pkgrepo_paths: {paths}")
+    assert len(paths) == 1
+    assert "pmaports" in paths[0].name
+    
+    default_path = pkgrepo_default_path()
+
+    assert default_path.name == "pmaports"
+
+    # Test extra-repos
+    assert pmb.helpers.run.user(["git", "checkout", "master_staging_systemd"],
+                         working_dir=default_path) == 0
+
+    paths = pkgrepo_paths()
+    assert len(paths) == 2
+
+    # systemd is the first path, since we want packages there to take priority
+    assert paths[0].name == "systemd"
+    # but pmaports is the default rep, since it has channels.cfg/pmaports.cfg
+    assert pkgrepo_default_path().name == "pmaports"