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Add push_count to stack, use it in error comparisons

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This commit is contained in:
Max Brunsfeld 2016-08-31 17:29:14 -07:00
parent e04ac7b13d
commit 7483da4184
4 changed files with 77 additions and 36 deletions
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18
spec/runtime/stack_spec.cc
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@ -119,6 +119,12 @@ describe("Stack", [&]() {
{1, 3},
})));
});
it("increments the version's push count", [&]() {
AssertThat(ts_stack_push_count(stack, 0), Equals<unsigned>(0));
ts_stack_push(stack, 0, trees[0], false, stateA);
AssertThat(ts_stack_push_count(stack, 0), Equals<unsigned>(1));
});
});
describe("merge()", [&]() {
@ -261,6 +267,18 @@ describe("Stack", [&]() {
free_slice_array(&pop.slices);
});
it("preserves the push count of the popped version", [&]() {
// . <──0── A <──1── B <──2── C*
// ↑
// └─*
StackPopResult pop = ts_stack_pop_count(stack, 0, 2);
AssertThat(ts_stack_push_count(stack, 0), Equals<unsigned>(3));
AssertThat(ts_stack_push_count(stack, 1), Equals<unsigned>(3));
free_slice_array(&pop.slices);
});
describe("when the version has been merged", [&]() {
before_each([&]() {
// . <──0── A <──1── B <──2── C <──3── D <──10── I*