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require 'spec_helper'
describe DiffHelper do
include RepoHelpers
let(:project) { create(:project) }
let(:commit) { project.commit(sample_commit.id) }
let(:diffs) { commit.diffs }
let(:diff) { diffs.first }
let(:diff_file) { Gitlab::Diff::File.new(diff) }
describe 'diff_hard_limit_enabled?' do
it 'should return true if param is provided' do
allow(controller).to receive(:params) { { force_show_diff: true } }
expect(diff_hard_limit_enabled?).to be_truthy
end
it 'should return false if param is not provided' do
expect(diff_hard_limit_enabled?).to be_falsey
end
end
describe 'allowed_diff_size' do
it 'should return hard limit for a diff if force diff is true' do
allow(controller).to receive(:params) { { force_show_diff: true } }
expect(allowed_diff_size).to eq(1000)
end
it 'should return safe limit for a diff if force diff is false' do
expect(allowed_diff_size).to eq(100)
end
end
describe 'allowed_diff_lines' do
it 'should return hard limit for number of lines in a diff if force diff is true' do
allow(controller).to receive(:params) { { force_show_diff: true } }
expect(allowed_diff_lines).to eq(50000)
end
it 'should return safe limit for numbers of lines a diff if force diff is false' do
expect(allowed_diff_lines).to eq(5000)
end
end
describe 'safe_diff_files' do
it 'should return all files from a commit that is smaller than safe limits' do
expect(safe_diff_files(diffs).length).to eq(2)
end
it 'should return only the first file if the diff line count in the 2nd file takes the total beyond safe limits' do
allow(diffs[1].diff).to receive(:lines).and_return([""] * 4999) #simulate 4999 lines
expect(safe_diff_files(diffs).length).to eq(1)
end
it 'should return all files from a commit that is beyond safe limit for numbers of lines if force diff is true' do
allow(controller).to receive(:params) { { force_show_diff: true } }
allow(diffs[1].diff).to receive(:lines).and_return([""] * 4999) #simulate 4999 lines
expect(safe_diff_files(diffs).length).to eq(2)
end
it 'should return only the first file if the diff line count in the 2nd file takes the total beyond hard limits' do
allow(controller).to receive(:params) { { force_show_diff: true } }
allow(diffs[1].diff).to receive(:lines).and_return([""] * 49999) #simulate 49999 lines
expect(safe_diff_files(diffs).length).to eq(1)
end
it 'should return only a safe number of file diffs if a commit touches more files than the safe limits' do
large_diffs = diffs * 100 #simulate 200 diffs
expect(safe_diff_files(large_diffs).length).to eq(100)
end
it 'should return all file diffs if a commit touches more files than the safe limits but force diff is true' do
allow(controller).to receive(:params) { { force_show_diff: true } }
large_diffs = diffs * 100 #simulate 200 diffs
expect(safe_diff_files(large_diffs).length).to eq(200)
end
it 'should return a limited file diffs if a commit touches more files than the hard limits and force diff is true' do
allow(controller).to receive(:params) { { force_show_diff: true } }
very_large_diffs = diffs * 1000 #simulate 2000 diffs
expect(safe_diff_files(very_large_diffs).length).to eq(1000)
end
end
describe 'parallel_diff' do
it 'should return an array of arrays containing the parsed diff' do
expect(parallel_diff(diff_file, 0)).
to match_array(parallel_diff_result_array)
end
end
describe 'generate_line_code' do
it 'should generate correct line code' do
expect(generate_line_code(diff_file.file_path, diff_file.diff_lines.first)).
to eq('2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6')
end
end
describe 'unfold_bottom_class' do
it 'should return empty string when bottom line shouldnt be unfolded' do
expect(unfold_bottom_class(false)).to eq('')
end
it 'should return js class when bottom lines should be unfolded' do
expect(unfold_bottom_class(true)).to eq('js-unfold-bottom')
end
end
describe 'unfold_class' do
it 'returns empty on false' do
expect(unfold_class(false)).to eq('')
end
it 'returns a class on true' do
expect(unfold_class(true)).to eq('unfold js-unfold')
end
end
describe 'diff_line_content' do
it 'should return non breaking space when line is empty' do
expect(diff_line_content(nil)).to eq(' ')
end
it 'should return the line itself' do
expect(diff_line_content(diff_file.diff_lines.first.text)).
to eq('@@ -6,12 +6,18 @@ module Popen')
expect(diff_line_content(diff_file.diff_lines.first.type)).to eq('match')
expect(diff_line_content(diff_file.diff_lines.first.new_pos)).to eq(6)
end
end
def parallel_diff_result_array
[
["match", 6, "@@ -6,12 +6,18 @@ module Popen", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6", "match", 6, "@@ -6,12 +6,18 @@ module Popen", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6"],
[nil, 6, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6", nil, 6, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_6_6"], [nil, 7, " def popen(cmd, path=nil)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_7_7", nil, 7, " def popen(cmd, path=nil)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_7_7"],
[nil, 8, " unless cmd.is_a?(Array)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_8_8", nil, 8, " unless cmd.is_a?(Array)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_8_8"],
["old", 9, "- raise <span class='idiff'></span>"System commands must be given as an array of strings"", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_9_9", "new", 9, "+ raise <span class='idiff'>RuntimeError, </span>"System commands must be given as an array of strings"", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_9"],
[nil, 10, " end", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_10", nil, 10, " end", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_10_10"],
[nil, 11, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_11_11", nil, 11, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_11_11"],
[nil, 12, " path ||= Dir.pwd", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_12_12", nil, 12, " path ||= Dir.pwd", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_12_12"],
["old", 13, "- vars = { "PWD" => path }", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_13_13", "old", nil, " ", nil],
["old", 14, "- options = { chdir: path }", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_14_13", "new", 13, "+", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_13"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_14", "new", 14, "+ vars = {", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_14"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_15", "new", 15, "+ "PWD" => path", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_15"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_16", "new", 16, "+ }", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_16"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_17", "new", 17, "+", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_17"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_18", "new", 18, "+ options = {", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_18"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_19", "new", 19, "+ chdir: path", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_19"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_20", "new", 20, "+ }", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_20"],
[nil, 15, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_21", nil, 21, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_15_21"],
[nil, 16, " unless File.directory?(path)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_16_22", nil, 22, " unless File.directory?(path)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_16_22"],
[nil, 17, " FileUtils.mkdir_p(path)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_17_23", nil, 23, " FileUtils.mkdir_p(path)", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_17_23"],
["match", 19, "@@ -19,6 +25,7 @@ module Popen", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25", "match", 25, "@@ -19,6 +25,7 @@ module Popen", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25"],
[nil, 19, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25", nil, 25, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_19_25"],
[nil, 20, " @cmd_output = """, "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_20_26", nil, 26, " @cmd_output = """, "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_20_26"],
[nil, 21, " @cmd_status = 0", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_21_27", nil, 27, " @cmd_status = 0", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_21_27"],
[nil, nil, " ", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_28", "new", 28, "+", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_28"],
[nil, 22, " Open3.popen3(vars, *cmd, options) do |stdin, stdout, stderr, wait_thr|", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_29", nil, 29, " Open3.popen3(vars, *cmd, options) do |stdin, stdout, stderr, wait_thr|", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_22_29"],
[nil, 23, " @cmd_output << stdout.read", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_23_30", nil, 30, " @cmd_output << stdout.read", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_23_30"],
[nil, 24, " @cmd_output << stderr.read", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_24_31", nil, 31, " @cmd_output << stderr.read", "2f6fcd96b88b36ce98c38da085c795a27d92a3dd_24_31"]
]
end
end
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