tests/integration/workspace.py: Test that we don't crash when workspace artifacts are deleted

This is a regression test for #1017

1 files changed, 33 insertions, 0 deletions

diff --git a/tests/integration/workspace.py b/tests/integration/workspace.py
index 102d053fc..e30d54df3 100644
--- a/tests/integration/workspace.py
+++ b/tests/integration/workspace.py
@@ -255,3 +255,36 @@ def test_incremental_configure_commands_run_only_once(cli, tmpdir, datafiles):
     res = cli.run(project=project, args=['build', element_name])
     res.assert_success()
     assert not os.path.exists(os.path.join(workspace, 'prepared-again'))
+
+
+# Test that rebuilding an already built workspaced element does
+# not crash after the last successfully built artifact is removed
+# from the cache
+#
+# A user can remove their artifact cache, or manually remove the
+# artifact with `bst artifact delete`, or BuildStream can delete
+# the last successfully built artifact for this workspace as a
+# part of a cleanup job.
+#
+@pytest.mark.integration
+@pytest.mark.datafiles(DATA_DIR)
+def test_workspace_missing_last_successful(cli, datafiles, integration_cache):
+    project = str(datafiles)
+    workspace = os.path.join(cli.directory, 'workspace')
+    element_name = 'workspace/workspace-mount.bst'
+
+    # Open workspace
+    res = cli.run(project=project, args=['workspace', 'open', element_name, workspace])
+    assert res.exit_code == 0
+
+    # Build first, this will record the last successful build in local state
+    res = cli.run(project=project, args=['build', element_name])
+    assert res.exit_code == 0
+
+    # Remove the artifact from the cache, invalidating the last successful build
+    cache_dir = os.path.join(integration_cache, 'artifacts')
+    cli.remove_artifact_from_cache(project, element_name, cache_dir=cache_dir)
+
+    # Build again, ensure we dont crash just because the artifact went missing
+    res = cli.run(project=project, args=['build', element_name])
+    assert res.exit_code == 0