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-rw-r--r--spec/util_iterators_spec.lua30
1 files changed, 30 insertions, 0 deletions
diff --git a/spec/util_iterators_spec.lua b/spec/util_iterators_spec.lua
index d00058f4..c819b2f0 100644
--- a/spec/util_iterators_spec.lua
+++ b/spec/util_iterators_spec.lua
@@ -11,4 +11,34 @@ describe("util.iterators", function ()
assert.same(output, expect);
end);
end);
+
+ describe("sorted_pairs", function ()
+ it("should produce sorted pairs", function ()
+ local orig = { b = 1, c = 2, a = "foo", d = false };
+ local n, last_key = 0, nil;
+ for k, v in iter.sorted_pairs(orig) do
+ n = n + 1;
+ if last_key then
+ assert(k > last_key, "Expected "..k.." > "..last_key)
+ end
+ last_key = k;
+ end
+ assert.equal("d", last_key);
+ assert.equal(4, n);
+ end);
+
+ it("should allow a custom sort function", function ()
+ local orig = { b = 1, c = 2, a = "foo", d = false };
+ local n, last_key = 0, nil;
+ for k, v in iter.sorted_pairs(orig, function (a, b) return a > b end) do
+ n = n + 1;
+ if last_key then
+ assert(k < last_key, "Expected "..k.." > "..last_key)
+ end
+ last_key = k;
+ end
+ assert.equal("a", last_key);
+ assert.equal(4, n);
+ end);
+ end);
end);