1 files changed, 51 insertions, 0 deletions
diff --git a/test/rake/test_rake_multi_task.rb b/test/rake/test_rake_multi_task.rb
new file mode 100644
index 0000000000..cac235b9d3
--- /dev/null
+++ b/test/rake/test_rake_multi_task.rb
@@ -0,0 +1,51 @@
+require File.expand_path('../helper', __FILE__)
+require 'thread'
+
+class TestRakeMultiTask < Rake::TestCase
+  include Rake
+  include Rake::DSL
+
+  def setup
+    super
+
+    Task.clear
+    @runs = Array.new
+    @mutex = Mutex.new
+  end
+
+  def add_run(obj)
+    @mutex.synchronize do
+      @runs << obj
+    end
+  end
+
+  def test_running_multitasks
+    task :a do 3.times do |i| add_run("A#{i}"); sleep 0.01; end end
+    task :b do 3.times do |i| add_run("B#{i}"); sleep 0.01;  end end
+    multitask :both => [:a, :b]
+    Task[:both].invoke
+    assert_equal 6, @runs.size
+    assert @runs.index("A0") < @runs.index("A1")
+    assert @runs.index("A1") < @runs.index("A2")
+    assert @runs.index("B0") < @runs.index("B1")
+    assert @runs.index("B1") < @runs.index("B2")
+  end
+
+  def test_all_multitasks_wait_on_slow_prerequisites
+    task :slow do 3.times do |i| add_run("S#{i}"); sleep 0.05 end end
+    task :a => [:slow] do 3.times do |i| add_run("A#{i}"); sleep 0.01 end end
+    task :b => [:slow] do 3.times do |i| add_run("B#{i}"); sleep 0.01 end end
+    multitask :both => [:a, :b]
+    Task[:both].invoke
+    assert_equal 9, @runs.size
+    assert @runs.index("S0") < @runs.index("S1")
+    assert @runs.index("S1") < @runs.index("S2")
+    assert @runs.index("S2") < @runs.index("A0")
+    assert @runs.index("S2") < @runs.index("B0")
+    assert @runs.index("A0") < @runs.index("A1")
+    assert @runs.index("A1") < @runs.index("A2")
+    assert @runs.index("B0") < @runs.index("B1")
+    assert @runs.index("B1") < @runs.index("B2")
+  end
+end
+