From 77eb0e9f7339fad25171fd75f78d69bd9436d4bf Mon Sep 17 00:00:00 2001
From: Borislav Stanimirov <b.stanimirov@abv.bg>
Date: Mon, 10 Jan 2022 10:52:48 +0200
Subject: [PATCH] Parse CMakeCache. Separate lib

---
 test/integration/lib.rb       | 81 +++++++++++++++++++++++++++++++++++
 test/integration/runner.rb    | 37 +---------------
 test/integration/test_noop.rb |  7 ++-
 3 files changed, 86 insertions(+), 39 deletions(-)
 create mode 100644 test/integration/lib.rb

diff --git a/test/integration/lib.rb b/test/integration/lib.rb
new file mode 100644
index 0000000..0d7b465
--- /dev/null
+++ b/test/integration/lib.rb
@@ -0,0 +1,81 @@
+require 'fileutils'
+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)
+
+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 }
+
+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]
+  end
+
+  class CMakeCacheValue
+    def initialize(val, type, advanced, desc)
+      @val = val
+      @type = type
+      @advanced = advanced
+      @desc = desc
+    end
+    attr :val, :type, :advanced, :desc
+    alias_method :advanced?, :advanced
+    def inspect
+      "(#{val.inspect} #{type}" + (advanced? ? ' ADVANCED)' : ')')
+    end
+  end
+  def read_cache
+    vars = {}
+    cur_desc = ''
+    file = File.join(@build_dir, 'CMakeCache.txt')
+    File.readlines(file).each { |line|
+      line.strip!
+      next if line.empty?
+      next if line.start_with? '#' # comment
+      if line.start_with? '//'
+        cur_desc += line[2..]
+      else
+        m = /(.+?)(-ADVANCED)?:([A-Z]+)=(.*)/.match(line)
+        raise "Error parsing '#{line}' in #{file}" if !m
+        vars[m[1]] = CMakeCacheValue.new(m[4], m[3], !!m[2], cur_desc)
+        cur_desc = ''
+      end
+    }
+    vars
+  end
+end
+
+class IntegrationTest < Test::Unit::TestCase
+  def make_project(name = 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
+  end
+end
diff --git a/test/integration/runner.rb b/test/integration/runner.rb
index 2a0dfd6..6f2eee0 100644
--- a/test/integration/runner.rb
+++ b/test/integration/runner.rb
@@ -1,37 +1,4 @@
-require 'fileutils'
-require 'open3'
-require 'tmpdir'
-require 'test/unit'
+require './lib'
 
-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)
-
-puts "Running CPM.cmake integration tests"
-puts "Temp directory: '#{TestTmpDir}'"
-
-CPMPath = File.expand_path('../../cmake/CPM.cmake', __dir__)
-raise "Cannot file '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 }
-
-class Project
-  def initialize(dir)
-    @dir = File.join(TestTmpDir, dir)
-  end
-end
-
-# exit Test::Unit::AutoRunner::run(true, __dir__)
+exit Test::Unit::AutoRunner::run(true, __dir__)
 
diff --git a/test/integration/test_noop.rb b/test/integration/test_noop.rb
index 02c7288..4762b5d 100644
--- a/test/integration/test_noop.rb
+++ b/test/integration/test_noop.rb
@@ -1,10 +1,9 @@
 # this test does nothing
 # it's, in a way, a test of the integration testing framework
+require './lib'
 
-class Noop < Test::Unit::TestCase
+class Noop < IntegrationTest
   def test_tt
-    puts 'run'
-    assert true
-    assert_equal 1, 1
+    make_project
   end
 end