Some experimental code to setup tests

test/integration/.gitignore

@@ -0,0 +1 @@
+tmp/

test/integration/runner.rb

@@ -1,3 +1,52 @@
-Dir['tests/*.rb'].sort.each do |f|
-  require('./' + f)
+require 'fileutils'
+
+CPMPath = File.expand_path('../../cmake/CPM.cmake')
+raise "Cannot file 'CPM.cmake' at '#{CPMPath}'" if !File.file?(CPMPath)
+
+CommonHeader = <<~CMAKE
+  cmake_minimum_required(VERSION 3.14 FATAL_ERROR)
+  include("#{CPMPath}")
+  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/bin")
+CMAKE
+
+TestDir = File.expand_path("./tmp/#{Time.now.strftime('%Y_%m_%d-%H_%M_%S')}")
+raise "Test directory '#{TestDir}' already exists" if File.exist?(TestDir)
+
+class Project
+  def initialize(name)
+    @name = name
+    @dir = File.join(TestDir, name)
+
+    @lists = CommonHeader + "project(#{name})\n"
+
+    FileUtils.mkdir_p(File.join(TestDir, name))
+  end
+
+  def set_body(body)
+    @lists += "\n" + body + "\n"
+  end
+
+  def configure()
+    File.write(File.join(@dir, 'CMakeLists.txt'), @lists)
+  end
+end
+
+@cur_file = ''
+@tests = {}
+def add_test(name, func)
+  raise "#{@cur_file}: Test #{name} is already defined from another file" if @tests[name]
+  @tests[name] = func
+end
+
+Dir['tests/*.rb'].sort.each do |file|
+  @cur_file = file
+  load './' + file
+end
+
+# sort alphabetically
+sorted_tests = @tests.to_a.sort {|a, b| a[0] <=> b[0] }
+
+sorted_tests.each do |name, func|
+  proj = Project.new(name)
+  func.(proj)
 end

test/integration/tests/simple.rb

@@ -1,7 +1,9 @@
-add_test('basic') { |prj|
+add_test 'basic', ->(prj) {
   prj.set_body <<~CMAKE
     CPMAddPackage("gh:cpm-cmake/testpack-adder")
     add_executable(using-adder using-adder.cpp)
     target_link_libraries(using-adder PRIVATE adder)
   CMAKE
+
+  prj.configure
 }