Two buckets problem

[007hillman]

In the tests for the two buckets problem, test 6 results cannot be attained as it takes 4 steps to reach the solution not 2 and at the end of the fourth step, The other volume is 1 not 2. Please correct that test case

[ryanplusplus]

Hey @007hillman, the tests come from upstream and are (or should be) common across all tracks that implement this exercise. That specific test is shown here with the same expected results:
https://github.com/exercism/problem-specifications/blob/4e186171f8ac5d7b825d3ed26d87da2220658330/exercises/two-bucket/canonical-data.json#L84-L99

This test has been in the upstream test list for 8 years so I have reasonable confidence that it is correct.

Additionally, we have sample solutions for every exercise in this repo and these are checked on every commit so it should be able to pass the test with the current requirements.

What makes you think that it is not possible to have a correct solution that passes this test?

[daxAKAhackerman]

Hey 👋 Just wanted to confirm that the test is indeed correct. I found this issue because I also thought the test was bugged, but when solving the problem with this algorithm:

Fill the A liter jug and pour it into the B liter jug.
If the A liter jug becomes empty, refill it.
If the B liter jug becomes full, empty it.
Repeat the above steps until either jug contains C liters.

test 6 fails because of an edge case where just filling the B liter jug is faster. Example handling of the edge case can be found here.

[ryanplusplus]

Thanks @daxAKAhackerman!