First integration test

test/integration/lib.rb

@@ -3,38 +3,66 @@ require 'open3'
 require 'tmpdir'
 require 'test/unit'
 
-TestTmpDir = File.join(Dir.tmpdir, "cpm-itest-#{Time.now.strftime('%Y_%m_%d-%H_%M_%S')}")
-raise "Test directory '#{TestTmpDir}' already exists" if File.exist?(TestTmpDir)
+module TestLib
+  TMP_DIR = File.join(Dir.tmpdir, 'cpm-test', Time.now.strftime('%Y_%m_%d-%H_%M_%S'))
+  CPM_PATH = File.expand_path('../../cmake/CPM.cmake', __dir__)
+
+  TEMPLATES_DIR = File.expand_path('templates', __dir__)
+
+  # Environment variables which are read by cpm
+  CPM_ENV = %w(
+    CPM_USE_LOCAL_PACKAGES
+    CPM_LOCAL_PACKAGES_ONLY
+    CPM_DOWNLOAD_ALL
+    CPM_DONT_UPDATE_MODULE_PATH
+    CPM_DONT_CREATE_PACKAGE_LOCK
+    CPM_INCLUDE_ALL_IN_PACKAGE_LOCK
+    CPM_USE_NAMED_CACHE_DIRECTORIES
+    CPM_SOURCE_CACHE
+  )
+  def self.clear_env
+    CPM_ENV.each { ENV[_1] = nil }
+  end
+end
+
+raise "Test directory '#{TestLib::TMP_DIR}' already exists" if File.exist?(TestLib::TMP_DIR)
+raise "Cannot find 'CPM.cmake' at '#{TestLib::CPM_PATH}'" if !File.file?(TestLib::CPM_PATH)
 
 puts "Running CPM.cmake integration tests"
-puts "Temp directory: '#{TestTmpDir}'"
-
-CPMPath = File.expand_path('../../cmake/CPM.cmake', __dir__)
-raise "Cannot find 'CPM.cmake' at '#{CPMPath}'" if !File.file?(CPMPath)
-
-# Environment variables which are read by cpm
-CPM_ENV = %w(
-  CPM_USE_LOCAL_PACKAGES
-  CPM_LOCAL_PACKAGES_ONLY
-  CPM_DOWNLOAD_ALL
-  CPM_DONT_UPDATE_MODULE_PATH
-  CPM_DONT_CREATE_PACKAGE_LOCK
-  CPM_INCLUDE_ALL_IN_PACKAGE_LOCK
-  CPM_USE_NAMED_CACHE_DIRECTORIES
-  CPM_SOURCE_CACHE
-)
-
-# Clear existing cpm-related env vars
-CPM_ENV.each { ENV[_1] = nil }
+puts "Temp directory: '#{TestLib::TMP_DIR}'"
 
 class Project
-  def initialize(dir, name)
-    @name = name
-    d = File.join(TestTmpDir, dir)
-    @src_dir = d + '-src'
-    @build_dir = d + '-build'
-    p @src_dir
-    FileUtils.mkdir_p [@src_dir, @build_dir]
+  def initialize(src_dir, build_dir)
+    @src_dir = src_dir
+    @build_dir = build_dir
+  end
+
+  def create_file(target_path, text)
+    target_path = File.join(@src_dir, target_path)
+    File.write target_path, text
+  end
+
+  def create_file_with(target_path, source_path, args)
+    source_path = File.join(@src_dir, source_path)
+    raise "#{source_path} doesn't exist" if !File.file?(source_path)
+
+    # tweak args
+    args[:cpm_path] = TestLib::CPM_PATH
+    args[:packages] = [args[:package]] if args[:package] # if args contain package, create the array
+    args[:packages] = args[:packages].join("\n") # join all packages
+
+    src_text = File.read source_path
+    create_file target_path, src_text % args
+  end
+
+  # common function to create ./CMakeLists.txt from ./lists.in.cmake
+  def create_lists_with(args)
+    create_file_with 'CMakeLists.txt', 'lists.in.cmake', args
+  end
+
+  CommandResult = Struct.new :out, :err, :status
+  def configure(extra_args = '')
+    CommandResult.new *Open3.capture3("cmake -S #{@src_dir} -B #{@build_dir} #{extra_args}")
   end
 
   class CMakeCacheValue
@@ -72,10 +100,26 @@ class Project
 end
 
 class IntegrationTest < Test::Unit::TestCase
-  def make_project(name = nil)
+  def setup
+    # Clear existing cpm-related env vars
+    TestLib.clear_env
+  end
+
+  def make_project(template_dir = nil)
     test_name = local_name
     test_name = test_name[5..] if test_name.start_with?('test_')
-    name = test_name if !name
-    Project.new "#{self.class.name.downcase}-#{test_name}", name
+
+    base = File.join(TestLib::TMP_DIR, self.class.name.downcase, test_name)
+    src_dir = base + '-src'
+
+    FileUtils.mkdir_p src_dir
+
+    if template_dir
+      template_dir = File.join(TestLib::TEMPLATES_DIR, template_dir)
+      raise "#{template_dir} is not a directory" if !File.directory?(template_dir)
+      FileUtils.copy_entry template_dir, src_dir
+    end
+
+    Project.new src_dir, base + '-build'
   end
 end