1 files changed, 83 insertions, 0 deletions
diff --git a/src/git/testutil/build_commit_diff.rs b/src/git/testutil/build_commit_diff.rs
new file mode 100644
index 0000000..49c6824
--- /dev/null
+++ b/src/git/testutil/build_commit_diff.rs
@@ -0,0 +1,83 @@
+use crate::git::{Commit, CommitDiff, FileStatus};
+
+/// Builder for creating a new commit diff.
+#[derive(Debug)]
+pub(crate) struct CommitDiffBuilder {
+	commit_diff: CommitDiff,
+}
+
+impl CommitDiffBuilder {
+	/// Create a new instance.
+	#[inline]
+	#[must_use]
+	pub(crate) const fn new(commit: Commit) -> Self {
+		Self {
+			commit_diff: CommitDiff {
+				commit,
+				parent: None,
+				file_statuses: vec![],
+				number_files_changed: 0,
+				number_insertions: 0,
+				number_deletions: 0,
+			},
+		}
+	}
+
+	/// Set the commit.
+	#[inline]
+	#[must_use]
+	#[allow(clippy::missing_const_for_fn)]
+	pub(crate) fn commit(mut self, commit: Commit) -> Self {
+		self.commit_diff.commit = commit;
+		self
+	}
+
+	/// Set the parent commit.
+	#[inline]
+	#[must_use]
+	#[allow(clippy::missing_const_for_fn)]
+	pub(crate) fn parent(mut self, parent: Commit) -> Self {
+		self.commit_diff.parent = Some(parent);
+		self
+	}
+
+	/// Set the `FileStatus`es.
+	#[inline]
+	#[must_use]
+	pub(crate) fn file_statuses(mut self, statuses: Vec<FileStatus>) -> Self {
+		self.commit_diff.file_statuses = statuses;
+		self
+	}
+
+	/// Set the number of files changed.
+	#[inline]
+	#[must_use]
+	pub(crate) const fn number_files_changed(mut self, count: usize) -> Self {
+		self.commit_diff.number_files_changed = count;
+		self
+	}
+
+	/// Set the number of line insertions.
+	#[inline]
+	#[must_use]
+	pub(crate) const fn number_insertions(mut self, count: usize) -> Self {
+		self.commit_diff.number_insertions = count;
+		self
+	}
+
+	/// Set the number of line deletions.
+	#[inline]
+	#[must_use]
+	pub(crate) const fn number_deletions(mut self, count: usize) -> Self {
+		self.commit_diff.number_deletions = count;
+		self
+	}
+
+	/// Return the built `CommitDiff`
+	#[inline]
+	#[must_use]
+	#[allow(clippy::missing_const_for_fn)]
+	pub(crate) fn build(self) -> CommitDiff {
+		self.commit_diff
+	}
+}