1 files changed, 128 insertions, 0 deletions
diff --git a/src/test_helpers/create_commit.rs b/src/test_helpers/create_commit.rs
new file mode 100644
index 0000000..03f51fa
--- /dev/null
+++ b/src/test_helpers/create_commit.rs
@@ -0,0 +1,128 @@
+use std::path::Path;
+
+use lazy_static::lazy_static;
+
+use crate::{git::Repository, test_helpers::JAN_2021_EPOCH};
+
+lazy_static! {
+	static ref DEFAULT_COMMIT_OPTIONS: CreateCommitOptions = CreateCommitOptions::new();
+}
+
+/// Options for creating a new commit.
+#[derive(Debug)]
+pub(crate) struct CreateCommitOptions {
+	author_name: String,
+	author_email: String,
+	author_time: Option<i64>,
+	committer_name: Option<String>,
+	committer_email: Option<String>,
+	committer_time: i64,
+	head_name: String,
+	message: String,
+}
+
+impl CreateCommitOptions {
+	/// Create a new instance.
+	#[must_use]
+	pub(crate) fn new() -> Self {
+		Self {
+			author_name: String::from("Author"),
+			author_email: String::from("author@example.com"),
+			author_time: None,
+			committer_name: None,
+			committer_email: None,
+			committer_time: JAN_2021_EPOCH,
+			head_name: String::from("main"),
+			message: String::from("title\n\nbody"),
+		}
+	}
+
+	/// Set the author name and related email address.
+	pub(crate) fn author(&mut self, name: &str) -> &mut Self {
+		self.author_name = String::from(name);
+		self.author_email = format!("{}@example.com", name.to_lowercase());
+		self
+	}
+
+	/// Set the author name.
+	pub(crate) fn author_name(&mut self, name: &str) -> &mut Self {
+		self.author_name = String::from(name);
+		self
+	}
+
+	/// Set the author email address.
+	pub(crate) fn author_email(&mut self, email: &str) -> &mut Self {
+		self.author_email = String::from(email);
+		self
+	}
+
+	/// Set the authored commit time.
+	pub(crate) fn author_time(&mut self, time: i64) -> &mut Self {
+		self.author_time = Some(time);
+		self
+	}
+
+	/// Set the committer name and related email address.
+	pub(crate) fn committer(&mut self, name: &str) -> &mut Self {
+		self.committer_name = Some(String::from(name));
+		self.committer_email = Some(format!("{}@example.com", name.to_lowercase()));
+		self
+	}
+
+	/// Set the committer name.
+	pub(crate) fn committer_name(&mut self, name: &str) -> &mut Self {
+		self.committer_name = Some(String::from(name));
+		self
+	}
+
+	/// Set the committer email.
+	pub(crate) fn committer_email(&mut self, email: &str) -> &mut Self {
+		self.committer_email = Some(String::from(email));
+		self
+	}
+
+	/// Set the committed commit time.
+	pub(crate) fn commit_time(&mut self, time: i64) -> &mut Self {
+		self.committer_time = time;
+		self
+	}
+
+	/// Set the head name.
+	pub(crate) fn head_name(&mut self, name: &str) -> &mut Self {
+		self.head_name = String::from(name);
+		self
+	}
+
+	/// Set the commit message.
+	pub(crate) fn message(&mut self, message: &str) -> &mut Self {
+		self.message = String::from(message);
+		self
+	}
+}
+
+/// Create a commit based on the provided options. If `options` is not provided, will create a
+/// commit using the default options. This function does not add modified or new files to the stage
+/// before creating a commit.
+///
+/// # Panics
+/// If any Git operation cannot be performed.
+pub(crate) fn create_commit(repository: &Repository, options: Option<&CreateCommitOptions>) {
+	let opts = options.unwrap_or(&DEFAULT_COMMIT_OPTIONS);
+	let author_sig = git2::Signature::new(
+		opts.author_name.as_str(),
+		opts.author_email.as_str(),
+		&git2::Time::new(opts.author_time.unwrap_or(opts.committer_time), 0),
+	)
+	.unwrap();
+	let committer_sig = git2::Signature::new(
+		opts.committer_name.as_ref().unwrap_or(&opts.author_name).as_str(),
+		opts.committer_email.as_ref().unwrap_or(&opts.author_email).as_str(),
+		&git2::Time::new(opts.committer_time, 0),
+	)
+	.unwrap();
+	let ref_name = format!("refs/heads/{}", opts.head_name);
+
+	repository
+		.create_commit_on_index(ref_name.as_str(), &author_sig, &committer_sig, opts.message.as_str())
+		.unwrap();
+}