aboutsummaryrefslogtreecommitdiffstats
path: root/spec
diff options
context:
space:
mode:
Diffstat (limited to 'spec')
-rw-r--r--spec/util_indexedbheap_spec.lua20
1 files changed, 19 insertions, 1 deletions
diff --git a/spec/util_indexedbheap_spec.lua b/spec/util_indexedbheap_spec.lua
index a76f94cb..b10ee385 100644
--- a/spec/util_indexedbheap_spec.lua
+++ b/spec/util_indexedbheap_spec.lua
@@ -1,15 +1,33 @@
local ibh = require"util.indexedbheap";
+
+local function verify_heap_property(priorities)
+ for k in ipairs(priorities) do
+ local parent = priorities[k];
+ local childA = priorities[2*k];
+ local childB = priorities[2*k+1];
+ -- print("-", parent, childA, childB)
+ assert(childA == nil or childA > parent, "heap property violated");
+ assert(childB == nil or childB > parent, "heap property violated");
+ end
+end
+
local h
setup(function ()
h = ibh.create();
end)
describe("util.indexedbheap", function ()
- pending("item can be moved from end to top", function ()
+ it("item can be moved from end to top", function ()
+ verify_heap_property(h);
h:insert("a", 1);
+ verify_heap_property(h);
h:insert("b", 2);
+ verify_heap_property(h);
h:insert("c", 3);
+ verify_heap_property(h);
local id = h:insert("*", 10);
+ verify_heap_property(h);
h:reprioritize(id, 0);
+ verify_heap_property(h);
assert.same({ 0, "*", id }, { h:pop() });
end)
end);