Reuse all components test

Implement the integration test for the Reuse All components Scenario.

tests/integration/example.test.env.yaml

@@ -23,6 +23,7 @@ testdata:
     # Branch which is going to be built for this test.
     branch: scratch-build-branch
   failed_build:
+    build_id: 1234
     module: testmodule
     branch: failed-build-branch
     # Batch considered by this test.
@@ -34,6 +35,7 @@ testdata:
     canceled_components:
     - comp2
   normal_build:
+    build_id: 1234
     module: testmodule
     branch: normal-build-branch
     # List of components in order they should be build in. One set represents one batch.
@@ -41,5 +43,11 @@ testdata:
     # True if buildrequire a Platform stream representing a GA RHEL release
     platform_is_ga: true
   resume_cancelled_build:
+    # This scenario doesn't support reusing past builds. "build_id" is not used.
     module: testmodule
     branch: cancel-build-branch
+  reuse_all_components:
+    build_id: 1234
+    build_id_reused: 1235
+    module: testmodule
+    branch: reuse-all-components-branch

tests/integration/test_reuse_all_components.py

@@ -0,0 +1,36 @@
+# -*- coding: utf-8 -*-
+# SPDX-License-Identifier: MIT
+
+import utils
+
+
+def test_reuse_all_components(test_env, repo, koji):
+    """Rebuild the test module again, without changing any of the components with:
+
+    `fedpkg module-build -w --optional rebuild_strategy=only-changed`
+
+    Checks:
+    * Verify that all the components are reused from the first build.
+    * Verify that module-build-macros is not built in the second build.
+    """
+    build = utils.Build(test_env["packaging_utility"], test_env["mbs_api"])
+    repo.bump()
+    build.run(
+        "--watch",
+        "--optional",
+        "rebuild_strategy=all",
+        reuse=test_env["testdata"]["reuse_all_components"].get("build_id"),
+    )
+    task_ids = build.component_task_ids()
+    task_ids.pop("module-build-macros")
+
+    repo.bump()
+    build.run(
+        "-w",
+        "--optional",
+        "rebuild_strategy=only-changed",
+        reuse=test_env["testdata"]["reuse_all_components"].get("build_id_reused"))
+    reused_task_ids = build.component_task_ids()
+
+    assert not build.components(package="module-build-macros")
+    assert task_ids == reused_task_ids

tests/integration/utils.py

@@ -145,11 +145,15 @@ class Build:
         :return: MBS build id of the build created
         :rtype: int
         """
+        current_build_id = self._build_id
         if reuse is not None:
             self._build_id = int(reuse)
         else:
             stdout = self._packaging_utility("module-build", *args).stdout.decode("utf-8")
             self._build_id = int(re.search(self._mbs_api + r"module-builds/(\d+)", stdout).group(1))
+        # Clear cached data
+        if current_build_id != self._build_id:
+            self._component_data = None
         return self._build_id
 
     def watch(self):
@@ -264,6 +268,14 @@ class Build:
 
         return batches
 
+    def component_task_ids(self):
+        """Dictionary containing all names of packages from build and appropriate task ids
+
+            :return: Dictionary containing name of packages and their task id
+            :rtype: dict
+        """
+        return {comp["package"]: comp["task_id"] for comp in self.components()}
+
     def wait_for_koji_task_id(self, package, batch, timeout=300, sleep=10):
         """Wait until the component is submitted to Koji (has a task_id)