1 files changed, 43 insertions, 0 deletions
diff --git a/test/rake/test_multitask.rb b/test/rake/test_multitask.rb
new file mode 100644
index 0000000000..d1178e6765
--- /dev/null
+++ b/test/rake/test_multitask.rb
@@ -0,0 +1,43 @@
+require 'test/unit'
+require 'rake'
+
+######################################################################
+class TestMultiTask < Test::Unit::TestCase
+  include Rake
+
+  def setup
+    Task.clear
+    @runs = Array.new
+  end
+
+  def test_running_multitasks
+    task :a do 3.times do |i| @runs << "A#{i}"; sleep 0.01; end end
+    task :b do 3.times do |i| @runs << "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| @runs << "S#{i}"; sleep 0.05 end end
+    task :a => [:slow] do 3.times do |i| @runs << "A#{i}"; sleep 0.01 end end
+    task :b => [:slow] do 3.times do |i| @runs << "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
+
+