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Expand test for join_segment

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This commit is contained in:
Martin Sumner 2018-04-04 22:37:01 +01:00
parent c8552d5bd5
commit 766cee50d7
1 changed files with 13 additions and 1 deletions
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14
src/leveled_tictac.erl
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@ -375,7 +375,7 @@ generate_segmentfilter_list(SegmentList, Size) ->
-spec join_segment(integer(), integer()) -> integer().
%% @doc
%% Generate a segment ID for the Brnahc and Leaf ID co-ordinates
%% Generate a segment ID for the Branch and Leaf ID co-ordinates
join_segment(BranchID, LeafID) ->
BranchID bsl ?L2_BITSIZE + LeafID.
@ -479,6 +479,18 @@ simple_test_withsize(Size) ->
Tree0 = new_tree(0, Size),
Tree1 = add_kv(Tree0, K1, {caine, 1}, BinFun),
% Check that we can get to the segment ID that has changed, and confirm it
% is the segment ID expected
Root1 = fetch_root(Tree1),
Root0 = fetch_root(Tree0),
[BranchID] = find_dirtysegments(Root0, Root1),
[{BranchID, Branch1}] = fetch_leaves(Tree1, [BranchID]),
[{BranchID, Branch0}] = fetch_leaves(Tree0, [BranchID]),
[LeafID] = find_dirtysegments(Branch0, Branch1),
SegK1 = keyto_segment32(K1) band (get_size(Size) * 256 - 1),
?assertMatch(SegK1, join_segment(BranchID, LeafID)),
Tree2 = add_kv(Tree1, K2, {caine, 2}, BinFun),
Tree3 = add_kv(Tree2, K3, {caine, 3}, BinFun),
Tree3A = add_kv(Tree3, K3, {caine, 4}, BinFun),