mirror of
https://github.com/gitbutlerapp/gitbutler.git
synced 2024-11-27 09:47:34 +03:00
Merge pull request #5540 from gitbutlerapp/remove-unused-code
remove unused code
This commit is contained in:
Kiril Videlov
GitHub
commit
541a5cf0da
@ -1,600 +0,0 @@
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use anyhow::{bail, Context as _, Result};
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use gitbutler_command_context::CommandContext;
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use gitbutler_project::access::WorktreeWritePermission;
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use gitbutler_repo::{rebase::cherry_rebase_group, LogUntil, RepositoryExt as _};
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use gitbutler_stack::StackId;
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use crate::{
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branch_trees::{
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checkout_branch_trees, compute_updated_branch_head_for_commits, BranchHeadAndTree,
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},
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VirtualBranchesExt as _,
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};
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/// Moves a commit up or down a stack by a certain offset.
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///
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/// After the commit is moved, the combined branch trees are checked out.
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/// A stack must have at least two commits in it. A 0 offset is a no-op.
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///
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/// Presume we had the stack:
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///
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/// A
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/// B
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/// C
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/// D
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///
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/// If C was the subject, and the offset was -1, we would expect:
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///
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/// A
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/// C
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/// B
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/// D
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///
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/// Or, if B was the subject, and the offset was 1, we would expect:
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///
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/// A
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/// C
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/// B
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/// D
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pub(crate) fn reorder_commit(
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ctx: &CommandContext,
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branch_id: StackId,
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subject_commit_oid: git2::Oid,
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offset: i32,
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perm: &mut WorktreeWritePermission,
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) -> Result<()> {
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let repository = ctx.repository();
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let vb_state = ctx.project().virtual_branches();
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let default_target = vb_state.get_default_target()?;
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let default_target_commit = repository
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.find_reference(&default_target.branch.to_string())?
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.peel_to_commit()?;
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let merge_base = repository.merge_base(default_target_commit.id(), subject_commit_oid)?;
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let mut branch = vb_state.get_branch_in_workspace(branch_id)?;
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let original_commits = repository.l(branch.head(), LogUntil::Commit(merge_base), false)?;
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let ReorderResult {
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tree,
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head,
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reordered_commits,
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} = inner_reorder_commit(
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repository,
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merge_base,
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subject_commit_oid,
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offset,
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&original_commits,
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&repository.find_tree(branch.tree)?,
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)?;
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let mut old_oid = None;
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for (idx, oid) in reordered_commits.iter().enumerate() {
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if *oid == subject_commit_oid {
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old_oid = reordered_commits.get(idx + 1);
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break;
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}
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}
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let subject_commit = repository.find_commit(subject_commit_oid)?;
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if let Some(old_oid) = old_oid {
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let old_commit = repository.find_commit(*old_oid)?;
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branch.replace_head(ctx, &old_commit, &subject_commit)?;
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}
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branch.replace_head(ctx, &subject_commit, &subject_commit.parent(0)?)?;
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branch.set_stack_head(ctx, head, Some(tree))?;
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checkout_branch_trees(ctx, perm)?;
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crate::integration::update_workspace_commit(&vb_state, ctx)
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.context("failed to update gitbutler workspace")?;
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Ok(())
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}
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struct ReorderResult {
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tree: git2::Oid,
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head: git2::Oid,
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reordered_commits: Vec<git2::Oid>,
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}
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/// Commit reordering implemented with libgit2 primatives
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///
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/// This returns a new head commit and tree for the branch.
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///
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/// If the tree ends up in a conflicted state when rebasing the head commit
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/// will actually be the commited tree in a conflicted state, and the tree
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/// will be the auto-resolved tree.
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///
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/// After usage (which should only be in `reorder_commit`), its important to
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/// re-merge all the branch trees together and check that out, as otherwise
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/// the tree writes will be lost.
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///
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/// * `base_commit`: The merge base of the branch head and trunk
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/// * `subject_commit`: The commit to be moved
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/// * `offset`: The offset to move the subject commit by, where
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/// negative is up (towards the branch head) and positive is down
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/// * `branch_commits`: The commits all the commits in the branch.
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/// * `branch_tree`: The tree of the branch
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fn inner_reorder_commit(
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repository: &git2::Repository,
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base_commit: git2::Oid,
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subject_commit: git2::Oid,
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offset: i32,
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branch_commits: &[git2::Oid],
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branch_tree: &git2::Tree,
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) -> Result<ReorderResult> {
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if branch_commits.len() < 2 {
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bail!("Cannot re-order less than two commits");
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};
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if offset == 0 {
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return Ok(ReorderResult {
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tree: branch_tree.id(),
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head: branch_commits[0],
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reordered_commits: vec![],
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});
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};
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ensure_offset_within_bounds(subject_commit, offset, branch_commits)?;
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let reordered_commits = reorder_commit_list(subject_commit, offset, branch_commits)?;
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// Rebase branch commits
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// We are passing all the commits to the cherry_rebase_group funcion, but
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// this is not a concern as it will verbaitm copy any commits that have
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// not had their parents changed.
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let new_head_oid = cherry_rebase_group(repository, base_commit, &reordered_commits)?;
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// Calculate the new head and tree
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let BranchHeadAndTree {
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head: new_head_oid,
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tree: new_tree_oid,
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} = compute_updated_branch_head_for_commits(
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repository,
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branch_commits[0], // This function only operates on lists of 2 or greater
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branch_tree.id(),
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new_head_oid,
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)?;
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Ok(ReorderResult {
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head: new_head_oid,
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tree: new_tree_oid,
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reordered_commits,
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})
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}
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fn reorder_commit_list(
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subject_commit: git2::Oid,
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offset: i32,
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branch_commits: &[git2::Oid],
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) -> Result<Vec<git2::Oid>> {
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let subject_index = branch_commits
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.iter()
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.position(|c| *c == subject_commit)
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.ok_or(anyhow::anyhow!(
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"Subject commit not found in branch commits"
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))?;
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let mut output = branch_commits.to_owned();
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output.remove(subject_index);
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output.insert(((subject_index as i32) + offset) as usize, subject_commit);
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Ok(output)
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}
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/// Presume we had the stack:
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///
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/// A
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/// B
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/// C // idx 2 // 2 + -1 = 1; 1 < 0 => All good
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/// D
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///
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/// If C was the subject, and the offset was -1, we would expect:
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///
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/// A
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/// C
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/// B
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/// D
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///
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/// Presume we had the stack:
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///
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/// A
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/// B // idx 1 // 1 + 1 = 2; 2 >= 4 => All good
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/// C
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/// D
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///
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/// If B was the subject, and the offset was 1, we would expect:
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///
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/// A
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/// C
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/// B
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/// D
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fn ensure_offset_within_bounds(
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subject_commit: git2::Oid,
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offset: i32,
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branch_commits: &[git2::Oid],
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) -> Result<()> {
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let subject_index = branch_commits
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.iter()
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.position(|c| *c == subject_commit)
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.ok_or(anyhow::anyhow!(
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"Subject commit not found in branch commits"
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))?;
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if subject_index as i32 + offset < 0 {
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bail!("Offset is out of bounds");
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}
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if subject_index as i32 + offset >= branch_commits.len() as i32 {
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bail!("Offset is out of bounds");
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}
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Ok(())
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}
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#[cfg(test)]
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mod test {
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#[cfg(test)]
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mod inner_reorder_commit {
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use gitbutler_cherry_pick::RepositoryExt as _;
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use gitbutler_commit::commit_ext::CommitExt as _;
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use gitbutler_repo::LogUntil;
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use gitbutler_repo::RepositoryExt as _;
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use gitbutler_testsupport::testing_repository::{
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assert_commit_tree_matches, TestingRepository,
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};
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#[test]
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fn less_than_two_commits_is_an_error() {
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let test_repository = TestingRepository::open();
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let merge_base = test_repository.commit_tree(None, &[("foo.txt", "a")]);
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let b = test_repository.commit_tree(Some(&merge_base), &[("foo.txt", "b")]);
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let result = crate::reorder_commits::inner_reorder_commit(
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&test_repository.repository,
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merge_base.id(),
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b.id(),
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0,
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&[b.id()],
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&b.tree().unwrap(),
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);
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assert!(result.is_err());
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}
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#[test]
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fn unconflicting_reorder() {
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let test_repository = TestingRepository::open();
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let merge_base = test_repository.commit_tree(None, &[("foo.txt", "a")]);
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// Commit A adds file bar
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let a = test_repository
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.commit_tree(Some(&merge_base), &[("foo.txt", "a"), ("bar.txt", "a")]);
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// Commit B adds file baz
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let b = test_repository.commit_tree(
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Some(&a),
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&[("foo.txt", "a"), ("bar.txt", "a"), ("baz.txt", "a")],
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);
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let result = crate::reorder_commits::inner_reorder_commit(
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&test_repository.repository,
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merge_base.id(),
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a.id(),
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-1,
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&[b.id(), a.id()],
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&b.tree().unwrap(),
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)
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.unwrap();
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let a_prime: git2::Commit =
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test_repository.repository.find_commit(result.head).unwrap();
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assert!(!a_prime.is_conflicted());
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assert_commit_tree_matches(
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&test_repository.repository,
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&a_prime,
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&[("foo.txt", b"a"), ("bar.txt", b"a"), ("baz.txt", b"a")],
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);
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let b_prime: git2::Commit = a_prime.parent(0).unwrap();
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assert!(!b_prime.is_conflicted());
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assert_commit_tree_matches(
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&test_repository.repository,
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&b_prime,
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&[("foo.txt", b"a"), ("baz.txt", b"a")],
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);
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assert!(b_prime.tree().unwrap().get_name("bar.txt").is_none());
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// In this case, the tree should be the same as a_prime, as there
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// were no uncommited files
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assert_eq!(result.tree, a_prime.tree_id());
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}
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#[test]
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fn conflicting_reorder() {
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let test_repository = TestingRepository::open();
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let merge_base = test_repository.commit_tree(None, &[("foo.txt", "a")]);
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let a = test_repository.commit_tree(Some(&merge_base), &[("foo.txt", "x")]);
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let b = test_repository.commit_tree(Some(&a), &[("foo.txt", "y")]);
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// When we re-order a and b, they will conflict.
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//
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// Setup: : Step 1: : Step 2: :
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// B: y : : A': x :
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// | : : :
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// A: x : B': a : B': a : <- B' is the auto-resolved tree
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// | : : :
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// MB: a : MB: a : MB: a :
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//
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// Reorder step 1:
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// Cherry pick B on top of Merge Base:
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// Merge trees: Bt and MBt, with base At. The theirs and ours sides
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// both have changes compared to the base so it conflicts.
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// We auto resolve to have the content of MBt: "a"
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//
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// Reorder step 2:
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// Cherry pick A on top of B':
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// Merge trees: At and B't, with base MBt. MBt is unchange relative
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// to the base, so it merges cleanly to "x".
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let result = crate::reorder_commits::inner_reorder_commit(
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&test_repository.repository,
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merge_base.id(),
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a.id(),
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-1,
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&[b.id(), a.id()],
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&b.tree().unwrap(),
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)
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.unwrap();
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let a_prime: git2::Commit =
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test_repository.repository.find_commit(result.head).unwrap();
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assert!(!a_prime.is_conflicted());
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assert_commit_tree_matches(&test_repository.repository, &a_prime, &[("foo.txt", b"x")]);
|
||||
|
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let b_prime: git2::Commit = a_prime.parent(0).unwrap();
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assert!(b_prime.is_conflicted());
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assert_commit_tree_matches(
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&test_repository.repository,
|
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&b_prime,
|
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&[
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(".auto-resolution/foo.txt", b"a"),
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(".conflict-base-0/foo.txt", b"x"),
|
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(".conflict-side-0/foo.txt", b"a"),
|
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(".conflict-side-1/foo.txt", b"y"),
|
||||
],
|
||||
);
|
||||
|
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// In this case, the tree should be the same as a_prime, as there
|
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// were no uncommited files
|
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assert_eq!(result.tree, a_prime.tree_id());
|
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|
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// We should now be able to re-order the commits back back to their
|
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// original order and the tree should be the same as the original.
|
||||
|
||||
// When we re-order A' and B', they become unconflicted
|
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//
|
||||
// Setup: : Step 1: : Step 2: :
|
||||
// A': y : : B'': x :
|
||||
// | : : :
|
||||
// B': a : A'': y : A'': y : <- B' is the auto-resolved tree
|
||||
// | : : :
|
||||
// MB: a : MB: a : MB: a :
|
||||
//
|
||||
// Reorder step 1:
|
||||
// Cherry pick A'' on top of Merge Base:
|
||||
// Merge trees: A't and MBt, with base B't (auto-resolution. MBt is
|
||||
// unchanged relative to the base, so it merges cleanly to "x".
|
||||
//
|
||||
// Reorder step 2:
|
||||
// Cherry pick B' on top of A'':
|
||||
// Merge trees: A''t and B't (ours == Bt), with base At.
|
||||
// A''t is y, B't is a, and At is y. This is a clean merge.
|
||||
|
||||
let result = crate::reorder_commits::inner_reorder_commit(
|
||||
&test_repository.repository,
|
||||
merge_base.id(),
|
||||
b_prime.id(),
|
||||
-1,
|
||||
&[a_prime.id(), b_prime.id()],
|
||||
&a_prime.tree().unwrap(),
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
let b_double_prime: git2::Commit =
|
||||
test_repository.repository.find_commit(result.head).unwrap();
|
||||
|
||||
assert!(!b_double_prime.is_conflicted());
|
||||
assert_eq!(b_double_prime.tree_id(), b.tree_id());
|
||||
|
||||
let a_double_prime: git2::Commit = b_double_prime.parent(0).unwrap();
|
||||
|
||||
assert!(!a_double_prime.is_conflicted());
|
||||
assert_eq!(a_double_prime.tree_id(), a.tree_id());
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn conflicting_tree() {
|
||||
let test_repository = TestingRepository::open();
|
||||
|
||||
let merge_base = test_repository.commit_tree(None, &[("foo.txt", "a")]);
|
||||
let a = test_repository.commit_tree(Some(&merge_base), &[("foo.txt", "x")]);
|
||||
let b = test_repository.commit_tree(Some(&a), &[("foo.txt", "y")]);
|
||||
let tree = test_repository.commit_tree(Some(&b), &[("foo.txt", "z")]);
|
||||
|
||||
let result = crate::reorder_commits::inner_reorder_commit(
|
||||
&test_repository.repository,
|
||||
merge_base.id(),
|
||||
a.id(),
|
||||
-1,
|
||||
&[b.id(), a.id()],
|
||||
&tree.tree().unwrap(),
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
let commits: Vec<git2::Commit> = test_repository
|
||||
.repository
|
||||
.log(result.head, LogUntil::Commit(merge_base.id()), false)
|
||||
.unwrap();
|
||||
|
||||
assert_eq!(
|
||||
commits.len(),
|
||||
3,
|
||||
"The conflicted tree should be come a commit"
|
||||
);
|
||||
|
||||
let tree_commit = &commits[0];
|
||||
let a_prime = &commits[1];
|
||||
let b_prime = &commits[2];
|
||||
|
||||
assert!(tree_commit.is_conflicted());
|
||||
assert!(!a_prime.is_conflicted());
|
||||
assert!(b_prime.is_conflicted());
|
||||
|
||||
assert_eq!(
|
||||
test_repository
|
||||
.repository
|
||||
.find_real_tree(tree_commit, Default::default())
|
||||
.unwrap()
|
||||
.id(),
|
||||
result.tree,
|
||||
"The tree should be the auto-resolved tree of the tree commit"
|
||||
);
|
||||
|
||||
// Order the commits back to their initial order and all should be
|
||||
// resolved
|
||||
let result = crate::reorder_commits::inner_reorder_commit(
|
||||
&test_repository.repository,
|
||||
merge_base.id(),
|
||||
b_prime.id(),
|
||||
-1,
|
||||
&[tree_commit.id(), a_prime.id(), b_prime.id()],
|
||||
&tree.tree().unwrap(),
|
||||
)
|
||||
.unwrap();
|
||||
|
||||
let commits: Vec<git2::Commit> = test_repository
|
||||
.repository
|
||||
.log(result.head, LogUntil::Commit(merge_base.id()), false)
|
||||
.unwrap();
|
||||
|
||||
assert_eq!(commits.len(), 3);
|
||||
|
||||
let tree_commit = &commits[0];
|
||||
let b_double_prime = &commits[1];
|
||||
let a_double_prime = &commits[2];
|
||||
|
||||
assert!(!tree_commit.is_conflicted());
|
||||
assert!(!b_double_prime.is_conflicted());
|
||||
assert!(!a_double_prime.is_conflicted());
|
||||
|
||||
assert_eq!(tree_commit.tree_id(), result.tree);
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod reorder_commit_list {
|
||||
use gitbutler_testsupport::testing_repository::TestingRepository;
|
||||
|
||||
use crate::reorder_commits::reorder_commit_list;
|
||||
|
||||
#[test]
|
||||
fn move_commit_up() {
|
||||
let test_repository = TestingRepository::open();
|
||||
|
||||
let a = test_repository.commit_tree(None, &[("foo.txt", "a")]).id();
|
||||
let b = test_repository.commit_tree(None, &[("foo.txt", "b")]).id();
|
||||
let c = test_repository.commit_tree(None, &[("foo.txt", "c")]).id();
|
||||
let d = test_repository.commit_tree(None, &[("foo.txt", "d")]).id();
|
||||
|
||||
let branch_commits = reorder_commit_list(c, -1, &[a, b, c, d]).unwrap();
|
||||
|
||||
assert_eq!(branch_commits, &[a, c, b, d]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn move_commit_up_to_top() {
|
||||
let test_repository = TestingRepository::open();
|
||||
|
||||
let a = test_repository.commit_tree(None, &[("foo.txt", "a")]).id();
|
||||
let b = test_repository.commit_tree(None, &[("foo.txt", "b")]).id();
|
||||
let c = test_repository.commit_tree(None, &[("foo.txt", "c")]).id();
|
||||
let d = test_repository.commit_tree(None, &[("foo.txt", "d")]).id();
|
||||
|
||||
let branch_commits = reorder_commit_list(c, -2, &[a, b, c, d]).unwrap();
|
||||
|
||||
assert_eq!(branch_commits, &[c, a, b, d]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn move_nowhere() {
|
||||
let test_repository = TestingRepository::open();
|
||||
|
||||
let a = test_repository.commit_tree(None, &[("foo.txt", "a")]).id();
|
||||
let b = test_repository.commit_tree(None, &[("foo.txt", "b")]).id();
|
||||
let c = test_repository.commit_tree(None, &[("foo.txt", "c")]).id();
|
||||
let d = test_repository.commit_tree(None, &[("foo.txt", "d")]).id();
|
||||
|
||||
let branch_commits = reorder_commit_list(b, 0, &[a, b, c, d]).unwrap();
|
||||
|
||||
assert_eq!(branch_commits, &[a, b, c, d]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn move_commit_down() {
|
||||
let test_repository = TestingRepository::open();
|
||||
|
||||
let a = test_repository.commit_tree(None, &[("foo.txt", "a")]).id();
|
||||
let b = test_repository.commit_tree(None, &[("foo.txt", "b")]).id();
|
||||
let c = test_repository.commit_tree(None, &[("foo.txt", "c")]).id();
|
||||
let d = test_repository.commit_tree(None, &[("foo.txt", "d")]).id();
|
||||
|
||||
let branch_commits = reorder_commit_list(b, 1, &[a, b, c, d]).unwrap();
|
||||
|
||||
assert_eq!(branch_commits, &[a, c, b, d]);
|
||||
}
|
||||
|
||||
#[test]
|
||||
fn move_commit_down_two() {
|
||||
let test_repository = TestingRepository::open();
|
||||
|
||||
let a = test_repository.commit_tree(None, &[("foo.txt", "a")]).id();
|
||||
let b = test_repository.commit_tree(None, &[("foo.txt", "b")]).id();
|
||||
let c = test_repository.commit_tree(None, &[("foo.txt", "c")]).id();
|
||||
let d = test_repository.commit_tree(None, &[("foo.txt", "d")]).id();
|
||||
|
||||
let branch_commits = reorder_commit_list(b, 2, &[a, b, c, d]).unwrap();
|
||||
|
||||
assert_eq!(branch_commits, &[a, c, d, b]);
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod ensure_offset_within_bounds {
|
||||
use crate::reorder_commits::ensure_offset_within_bounds;
|
||||
use gitbutler_testsupport::testing_repository::TestingRepository;
|
||||
|
||||
#[test]
|
||||
fn test() {
|
||||
let test_repository = TestingRepository::open();
|
||||
|
||||
let a = test_repository.commit_tree(None, &[("foo.txt", "a")]).id();
|
||||
let b = test_repository.commit_tree(None, &[("foo.txt", "b")]).id();
|
||||
let c = test_repository.commit_tree(None, &[("foo.txt", "c")]).id();
|
||||
let d = test_repository.commit_tree(None, &[("foo.txt", "d")]).id();
|
||||
|
||||
assert!(ensure_offset_within_bounds(b, -2, &[a, b, c, d]).is_err());
|
||||
assert!(ensure_offset_within_bounds(b, -1, &[a, b, c, d]).is_ok());
|
||||
assert!(ensure_offset_within_bounds(b, 0, &[a, b, c, d]).is_ok());
|
||||
assert!(ensure_offset_within_bounds(b, 1, &[a, b, c, d]).is_ok());
|
||||
assert!(ensure_offset_within_bounds(b, 2, &[a, b, c, d]).is_ok());
|
||||
assert!(ensure_offset_within_bounds(b, 3, &[a, b, c, d]).is_err());
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user