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# frozen_string_literal: true
require 'spec_helper'
require 'diff/lcs/hunk'
describe 'Diff::LCS Issues' do
include Diff::LCS::SpecHelper::Matchers
describe 'issue #1' do
shared_examples 'handles simple diffs' do |s1, s2, forward_diff|
before do
@diff_s1_s2 = Diff::LCS.diff(s1, s2)
end
it 'creates the correct diff' do
expect(change_diff(forward_diff)).to eq(@diff_s1_s2)
end
it 'creates the correct patch s1->s2' do
expect(Diff::LCS.patch(s1, @diff_s1_s2)).to eq(s2)
end
it 'creates the correct patch s2->s1' do
expect(Diff::LCS.patch(s2, @diff_s1_s2)).to eq(s1)
end
end
describe 'string' do
it_has_behavior 'handles simple diffs', 'aX', 'bXaX', [
[
['+', 0, 'b'],
['+', 1, 'X']
]
]
it_has_behavior 'handles simple diffs', 'bXaX', 'aX', [
[
['-', 0, 'b'],
['-', 1, 'X']
]
]
end
describe 'array' do
it_has_behavior 'handles simple diffs', %w(a X), %w(b X a X), [
[
['+', 0, 'b'],
['+', 1, 'X']
]
]
it_has_behavior 'handles simple diffs', %w(b X a X), %w(a X), [
[
['-', 0, 'b'],
['-', 1, 'X']
]
]
end
end
describe "issue #57" do
it 'should fail with a correct error' do
expect {
actual = {:category=>"app.rack.request"}
expected = {:category=>"rack.middleware", :title=>"Anonymous Middleware"}
expect(actual).to eq(expected)
}.to raise_error(RSpec::Expectations::ExpectationNotMetError)
end
end
describe "issue #60" do
it 'should produce unified output with correct context' do
old_data = <<-DATA_OLD.strip.split("\n").map(&:chomp)
{
"name": "x",
"description": "hi"
}
DATA_OLD
new_data = <<-DATA_NEW.strip.split("\n").map(&:chomp)
{
"name": "x",
"description": "lo"
}
DATA_NEW
diff = ::Diff::LCS.diff(old_data, new_data)
hunk = ::Diff::LCS::Hunk.new(old_data, new_data, diff.first, 3, 0)
expect(hunk.diff(:unified)).to eq(<<-EXPECTED.chomp)
@@ -1,5 +1,5 @@
{
"name": "x",
- "description": "hi"
+ "description": "lo"
}
EXPECTED
end
end
end
|
