gitlab-org--gitlab-foss/spec/serializers/diffs_entity_spec.rb

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# frozen_string_literal: true
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require 'spec_helper'
RSpec.describe DiffsEntity do
let_it_be(:user) { create(:user) }
let_it_be(:project) { create(:project, :repository) }
let_it_be(:merge_request) { create(:merge_request_with_diffs, target_project: project, source_project: project) }
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let(:request) { EntityRequest.new(project: project, current_user: user) }
let(:merge_request_diffs) { merge_request.merge_request_diffs }
let(:allow_tree_conflicts) { false }
let(:options) do
{
request: request,
merge_request: merge_request,
merge_request_diffs: merge_request_diffs,
allow_tree_conflicts: allow_tree_conflicts
}
end
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let(:entity) do
described_class.new(merge_request_diffs.first.diffs, options)
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end
context 'as json' do
subject { entity.as_json }
it 'contains needed attributes' do
expect(subject).to include(
:real_size, :size, :branch_name,
:target_branch_name, :commit, :merge_request_diff,
:start_version, :latest_diff, :latest_version_path,
:added_lines, :removed_lines, :render_overflow_warning,
:email_patch_path, :plain_diff_path, :diff_files,
:merge_request_diffs, :definition_path_prefix
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)
end
context 'broken merge request' do
let(:merge_request) { create(:merge_request, :invalid, target_project: project, source_project: project) }
it 'renders without errors' do
expect { subject }.not_to raise_error
end
end
context "when a commit_id is passed" do
let(:commits) { merge_request.commits }
let(:entity) do
described_class.new(
merge_request_diffs.first.diffs,
request: request,
merge_request: merge_request,
merge_request_diffs: merge_request_diffs,
commit: commit
)
end
subject { entity.as_json }
context "when the passed commit is not the first or last in the group" do
let(:commit) { commits.third }
it 'includes commit references for previous and next' do
expect(subject[:commit][:next_commit_id]).to eq(commits.second.id)
expect(subject[:commit][:prev_commit_id]).to eq(commits.fourth.id)
end
end
context "when the passed commit is the first in the group" do
let(:commit) { commits.first }
it 'includes commit references for nil and previous commit' do
expect(subject[:commit][:next_commit_id]).to be_nil
expect(subject[:commit][:prev_commit_id]).to eq(commits.second.id)
end
end
context "when the passed commit is the last in the group" do
let(:commit) { commits.last }
it 'includes commit references for the next and nil' do
expect(subject[:commit][:next_commit_id]).to eq(commits[-2].id)
expect(subject[:commit][:prev_commit_id]).to be_nil
end
end
end
context 'when there are conflicts' do
let(:diff_files) { merge_request_diffs.first.diffs.diff_files }
let(:diff_file_with_conflict) { diff_files.to_a.last }
let(:diff_file_without_conflict) { diff_files.to_a[-2] }
let(:resolvable_conflicts) { true }
let(:conflict_file) { double(path: diff_file_with_conflict.new_path, conflict_type: :both_modified) }
let(:conflicts) { double(conflicts: double(files: [conflict_file]), can_be_resolved_in_ui?: resolvable_conflicts) }
let(:merge_ref_head_diff) { true }
let(:options) { super().merge(merge_ref_head_diff: merge_ref_head_diff) }
before do
allow(MergeRequests::Conflicts::ListService).to receive(:new).and_return(conflicts)
end
it 'conflicts are highlighted' do
expect(conflict_file).to receive(:diff_lines_for_serializer)
expect(diff_file_with_conflict).not_to receive(:diff_lines_for_serializer)
expect(diff_file_without_conflict).to receive(:diff_lines_for_serializer).twice # for highlighted_diff_lines and is_fully_expanded
subject
end
context 'merge ref head diff is not chosen to be displayed' do
let(:merge_ref_head_diff) { false }
it 'conflicts are not calculated' do
expect(MergeRequests::Conflicts::ListService).not_to receive(:new)
end
end
context 'when conflicts cannot be resolved' do
let(:resolvable_conflicts) { false }
it 'conflicts are not highlighted' do
expect(conflict_file).not_to receive(:diff_lines_for_serializer)
expect(diff_file_with_conflict).to receive(:diff_lines_for_serializer).twice # for highlighted_diff_lines and is_fully_expanded
expect(diff_file_without_conflict).to receive(:diff_lines_for_serializer).twice # for highlighted_diff_lines and is_fully_expanded
subject
end
context 'when allow_tree_conflicts is set to true' do
let(:allow_tree_conflicts) { true }
it 'conflicts are still highlighted' do
expect(conflict_file).to receive(:diff_lines_for_serializer)
expect(diff_file_with_conflict).not_to receive(:diff_lines_for_serializer)
expect(diff_file_without_conflict).to receive(:diff_lines_for_serializer).twice # for highlighted_diff_lines and is_fully_expanded
subject
end
end
end
end
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end
end