WIP: Add integration test to cover generated .repo files

This test is different from the usual package managers tests, since it
uses a file that is RPM-specific and that also is a .toml file. This
means that the boilerplate needs to be customized for this specific
case.

For now, I wrote a very straightforward solution, but I am thinking if
there's a way to make it more generic and fit it into the utils module.

I also am checking if testing for the contents of repomd.xml is worth
the trouble, since it includes some timestamps that will need to be
worked around.

Signed-off-by: Bruno Pimentel <[email protected]>

tests/integration/test_data/test_repo_files/cachi2.repo

@@ -0,0 +1,3 @@
+[releases]
+baseurl=file:///tmp/test_repo_files-output/deps/rpm/x86_64/releases
+gpgcheck=1

tests/integration/test_data/test_repo_files/vendor_sha256sums.json

@@ -0,0 +1 @@
+{}

tests/integration/test_rpm.py

@@ -1,3 +1,4 @@
+import os
 from pathlib import Path
 from typing import List
 
@@ -54,7 +55,10 @@
             utils.TestParameters(
                 repo="https://github.com/cachito-testing/cachi2-rpm",
                 ref="12afdef45a07560303496217de0222c5f7a49cac",
-                packages=[{"path": "this-project", "type": "rpm"}, {"path": "another-project", "type": "rpm"}],
+                packages=[
+                    {"path": "this-project", "type": "rpm"},
+                    {"path": "another-project", "type": "rpm"},
+                ],
                 flags=["--dev-package-managers"],
                 check_output=True,
                 check_deps_checksums=False,
@@ -102,6 +106,65 @@ def test_rpm_packages(
     )
 
 
+def test_repo_files(
+    cachi2_image: utils.ContainerImage,
+    tmp_path: Path,
+    test_data_dir: Path,
+    request: pytest.FixtureRequest,
+) -> None:
+    """Test if the contents of the generated .repo file are correct."""
+    test_case = "test_repo_files"
+
+    source_folder = utils.clone_repository(
+        "https://github.com/cachito-testing/cachi2-rpm",
+        "3956e4d095920b3f06b861dbc778a520fdb89fd2",
+        f"{test_case}-source",
+        tmp_path,
+    )
+
+    output_folder = tmp_path.joinpath(f"{test_case}-output")
+
+    # prefetch dependencies
+    cmd = [
+        "fetch-deps",
+        "--source",
+        source_folder,
+        "--output",
+        output_folder,
+        "--dev-package-managers",
+        '{"type": "rpm"}',
+    ]
+
+    (output, exit_code) = cachi2_image.run_cmd_on_image(cmd, tmp_path)
+    (f"Fetching deps ended with unexpected exitcode: {exit_code} != 0, " f"output-cmd: {output}")
+
+    # inject files
+    cmd = [
+        "inject-files",
+        output_folder,
+        "--for-output-dir",
+        Path("/tmp").joinpath(f"{test_case}-output"),
+    ]
+    (output, exit_code) = cachi2_image.run_cmd_on_image(cmd, tmp_path)
+    assert exit_code == 0, f"Injecting project files failed. output-cmd: {output}"
+
+    # check repofile contents
+    def read_file(path: Path) -> str:
+        with open(path) as file:
+            return file.read()
+
+    repo_file_content = read_file(output_folder.joinpath("deps/rpm/x86_64/repos.d/cachi2.repo"))
+    expected_repo_file_path = test_data_dir.joinpath(test_case, "cachi2.repo")
+
+    # update test data if needed
+    if os.getenv("CACHI2_GENERATE_TEST_DATA") == "true":
+        expected_repo_file_path.parent.mkdir(parents=True, exist_ok=True)
+        with open(expected_repo_file_path, "w") as file:
+            file.write(repo_file_content)
+
+    assert repo_file_content == read_file(expected_repo_file_path)
+
+
 @pytest.mark.parametrize(
     "test_params, check_cmd, expected_cmd_output",
     [