1 files changed, 125 insertions, 0 deletions
diff --git a/test/lib/ansible_test/_internal/metadata.py b/test/lib/ansible_test/_internal/metadata.py
new file mode 100644
index 0000000..94bbc34
--- /dev/null
+++ b/test/lib/ansible_test/_internal/metadata.py
@@ -0,0 +1,125 @@
+"""Test metadata for passing data to delegated tests."""
+from __future__ import annotations
+import typing as t
+
+from .util import (
+    display,
+)
+
+from .io import (
+    write_json_file,
+    read_json_file,
+)
+
+from .diff import (
+    parse_diff,
+    FileDiff,
+)
+
+
+class Metadata:
+    """Metadata object for passing data to delegated tests."""
+    def __init__(self) -> None:
+        """Initialize metadata."""
+        self.changes: dict[str, tuple[tuple[int, int], ...]] = {}
+        self.cloud_config: t.Optional[dict[str, dict[str, t.Union[int, str, bool]]]] = None
+        self.change_description: t.Optional[ChangeDescription] = None
+        self.ci_provider: t.Optional[str] = None
+
+    def populate_changes(self, diff: t.Optional[list[str]]) -> None:
+        """Populate the changeset using the given diff."""
+        patches = parse_diff(diff)
+        patches: list[FileDiff] = sorted(patches, key=lambda k: k.new.path)
+
+        self.changes = dict((patch.new.path, tuple(patch.new.ranges)) for patch in patches)
+
+        renames = [patch.old.path for patch in patches if patch.old.path != patch.new.path and patch.old.exists and patch.new.exists]
+        deletes = [patch.old.path for patch in patches if not patch.new.exists]
+
+        # make sure old paths which were renamed or deleted are registered in changes
+        for path in renames + deletes:
+            if path in self.changes:
+                # old path was replaced with another file
+                continue
+
+            # failed tests involving deleted files should be using line 0 since there is no content remaining
+            self.changes[path] = ((0, 0),)
+
+    def to_dict(self) -> dict[str, t.Any]:
+        """Return a dictionary representation of the metadata."""
+        return dict(
+            changes=self.changes,
+            cloud_config=self.cloud_config,
+            ci_provider=self.ci_provider,
+            change_description=self.change_description.to_dict(),
+        )
+
+    def to_file(self, path: str) -> None:
+        """Write the metadata to the specified file."""
+        data = self.to_dict()
+
+        display.info('>>> Metadata: %s\n%s' % (path, data), verbosity=3)
+
+        write_json_file(path, data)
+
+    @staticmethod
+    def from_file(path: str) -> Metadata:
+        """Return metadata loaded from the specified file."""
+        data = read_json_file(path)
+        return Metadata.from_dict(data)
+
+    @staticmethod
+    def from_dict(data: dict[str, t.Any]) -> Metadata:
+        """Return metadata loaded from the specified dictionary."""
+        metadata = Metadata()
+        metadata.changes = data['changes']
+        metadata.cloud_config = data['cloud_config']
+        metadata.ci_provider = data['ci_provider']
+        metadata.change_description = ChangeDescription.from_dict(data['change_description'])
+
+        return metadata
+
+
+class ChangeDescription:
+    """Description of changes."""
+    def __init__(self) -> None:
+        self.command: str = ''
+        self.changed_paths: list[str] = []
+        self.deleted_paths: list[str] = []
+        self.regular_command_targets: dict[str, list[str]] = {}
+        self.focused_command_targets: dict[str, list[str]] = {}
+        self.no_integration_paths: list[str] = []
+
+    @property
+    def targets(self) -> t.Optional[list[str]]:
+        """Optional list of target names."""
+        return self.regular_command_targets.get(self.command)
+
+    @property
+    def focused_targets(self) -> t.Optional[list[str]]:
+        """Optional list of focused target names."""
+        return self.focused_command_targets.get(self.command)
+
+    def to_dict(self) -> dict[str, t.Any]:
+        """Return a dictionary representation of the change description."""
+        return dict(
+            command=self.command,
+            changed_paths=self.changed_paths,
+            deleted_paths=self.deleted_paths,
+            regular_command_targets=self.regular_command_targets,
+            focused_command_targets=self.focused_command_targets,
+            no_integration_paths=self.no_integration_paths,
+        )
+
+    @staticmethod
+    def from_dict(data: dict[str, t.Any]) -> ChangeDescription:
+        """Return a change description loaded from the given dictionary."""
+        changes = ChangeDescription()
+        changes.command = data['command']
+        changes.changed_paths = data['changed_paths']
+        changes.deleted_paths = data['deleted_paths']
+        changes.regular_command_targets = data['regular_command_targets']
+        changes.focused_command_targets = data['focused_command_targets']
+        changes.no_integration_paths = data['no_integration_paths']
+
+        return changes