summaryrefslogtreecommitdiff
path: root/test/test_tsort.rb
diff options
context:
space:
mode:
Diffstat (limited to 'test/test_tsort.rb')
-rw-r--r--test/test_tsort.rb48
1 files changed, 44 insertions, 4 deletions
diff --git a/test/test_tsort.rb b/test/test_tsort.rb
index 981fedd..38018c4 100644
--- a/test/test_tsort.rb
+++ b/test/test_tsort.rb
@@ -1,4 +1,44 @@
-require 'pathname'
-require Pathname.new(__FILE__).dirname.join('inlinetest.rb')
-target = __FILE__[/test_(.*\.rb)$/, 1]
-InlineTest.loadtest(target)
+require 'tsort'
+require 'test/unit'
+
+class TSortHash < Hash # :nodoc:
+ include TSort
+ alias tsort_each_node each_key
+ def tsort_each_child(node, &block)
+ fetch(node).each(&block)
+ end
+end
+
+class TSortArray < Array # :nodoc:
+ include TSort
+ alias tsort_each_node each_index
+ def tsort_each_child(node, &block)
+ fetch(node).each(&block)
+ end
+end
+
+class TSortTest < Test::Unit::TestCase # :nodoc:
+ def test_dag
+ h = TSortHash[{1=>[2, 3], 2=>[3], 3=>[]}]
+ assert_equal([3, 2, 1], h.tsort)
+ assert_equal([[3], [2], [1]], h.strongly_connected_components)
+ end
+
+ def test_cycle
+ h = TSortHash[{1=>[2], 2=>[3, 4], 3=>[2], 4=>[]}]
+ assert_equal([[4], [2, 3], [1]],
+ h.strongly_connected_components.map {|nodes| nodes.sort})
+ assert_raise(TSort::Cyclic) { h.tsort }
+ end
+
+ def test_array
+ a = TSortArray[[1], [0], [0], [2]]
+ assert_equal([[0, 1], [2], [3]],
+ a.strongly_connected_components.map {|nodes| nodes.sort})
+
+ a = TSortArray[[], [0]]
+ assert_equal([[0], [1]],
+ a.strongly_connected_components.map {|nodes| nodes.sort})
+ end
+end
+