diff options
Diffstat (limited to 'src/test/scala/hbt')
-rw-r--r-- | src/test/scala/hbt/TarjanTests.scala | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/test/scala/hbt/TarjanTests.scala b/src/test/scala/hbt/TarjanTests.scala new file mode 100644 index 00000000..48314cf4 --- /dev/null +++ b/src/test/scala/hbt/TarjanTests.scala @@ -0,0 +1,89 @@ +package hbt +import utest._ +object TarjanTests extends TestSuite{ + def check(input: Seq[Seq[Int]], expected: Seq[Seq[Int]]) = { + val result = Tarjans(input).map(_.sorted) + val sortedExpected = expected.map(_.sorted) + assert(result == sortedExpected) + } + val tests = Tests{ + // + 'empty - check(Seq(), Seq()) + + // (0) + 'singleton - check(Seq(Seq()), Seq(Seq(0))) + + + // (0)-. + // ^._/ + 'selfCycle - check(Seq(Seq(0)), Seq(Seq(0))) + + // (0) <-> (1) + 'simpleCycle- check(Seq(Seq(1), Seq(0)), Seq(Seq(1, 0))) + + // (0) (1) (2) + 'multipleSingletons - check( + Seq(Seq(), Seq(), Seq()), + Seq(Seq(0), Seq(1), Seq(2)) + ) + + // (0) -> (1) -> (2) + 'straightLineNoCycles- check( + Seq(Seq(1), Seq(2), Seq()), + Seq(Seq(2), Seq(1), Seq(0)) + ) + + // (0) <- (1) <- (2) + 'straightLineNoCyclesReversed- check( + Seq(Seq(), Seq(0), Seq(1)), + Seq(Seq(0), Seq(1), Seq(2)) + ) + + // (0) <-> (1) (2) -> (3) -> (4) + // ^.____________/ + 'independentSimpleCycles - check( + Seq(Seq(1), Seq(0), Seq(3), Seq(4), Seq(2)), + Seq(Seq(1, 0), Seq(4, 3, 2)) + ) + + // ___________________ + // v \ + // (0) <-> (1) (2) -> (3) -> (4) + // ^.____________/ + 'independentLinkedCycles - check( + Seq(Seq(1), Seq(0), Seq(3), Seq(4), Seq(2, 1)), + Seq(Seq(1, 0), Seq(4, 3, 2)) + ) + // _____________ + // / v + // (0) <-> (1) (2) -> (3) -> (4) + // ^.____________/ + 'independentLinkedCycles2 - check( + Seq(Seq(1, 2), Seq(0), Seq(3), Seq(4), Seq(2)), + Seq(Seq(4, 3, 2), Seq(1, 0)) + ) + + // _____________ + // / v + // (0) <-> (1) (2) -> (3) -> (4) + // ^. ^.____________/ + // \________________/ + 'combinedCycles - check( + Seq(Seq(1, 2), Seq(0), Seq(3), Seq(4), Seq(2, 1)), + Seq(Seq(4, 3, 2, 1, 0)) + ) + // + // (0) <-> (1) <- (2) <- (3) <-> (4) <- (5) + // ^.____________/ / / + // / / + // (6) <- (7) <-/ (8) <-' + // / / + // v / + // (9) <--------' + 'combinedCycles - check( + Seq(Seq(1), Seq(0), Seq(0, 1), Seq(2, 4, 7, 9), Seq(3), Seq(4, 8), Seq(9), Seq(6), Seq(), Seq()), + Seq(Seq(0, 1), Seq(2), Seq(9), Seq(6), Seq(7), Seq(3, 4), Seq(8), Seq(5)) + ) + + } +}
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