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Diffstat (limited to 'indra/llcommon/tests/llpounceable_test.cpp')
| -rw-r--r-- | indra/llcommon/tests/llpounceable_test.cpp | 230 |
1 files changed, 230 insertions, 0 deletions
diff --git a/indra/llcommon/tests/llpounceable_test.cpp b/indra/llcommon/tests/llpounceable_test.cpp new file mode 100644 index 0000000000..2f4915ce11 --- /dev/null +++ b/indra/llcommon/tests/llpounceable_test.cpp @@ -0,0 +1,230 @@ +/** + * @file llpounceable_test.cpp + * @author Nat Goodspeed + * @date 2015-05-22 + * @brief Test for llpounceable. + * + * $LicenseInfo:firstyear=2015&license=viewerlgpl$ + * Copyright (c) 2015, Linden Research, Inc. + * $/LicenseInfo$ + */ + +// Precompiled header +#include "linden_common.h" +// associated header +#include "llpounceable.h" +// STL headers +// std headers +// external library headers +#include <boost/bind.hpp> +// other Linden headers +#include "../test/lltut.h" + +/*----------------------------- string testing -----------------------------*/ +void append(std::string* dest, const std::string& src) +{ + dest->append(src); +} + +/*-------------------------- Data-struct testing ---------------------------*/ +struct Data +{ + Data(const std::string& data): + mData(data) + {} + const std::string mData; +}; + +void setter(Data** dest, Data* ptr) +{ + *dest = ptr; +} + +static Data* static_check = 0; + +// Set up an extern pointer to an LLPounceableStatic so the linker will fill +// in the forward reference from below, before runtime. +extern LLPounceable<Data*, LLPounceableStatic> gForward; + +struct EnqueueCall +{ + EnqueueCall() + { + // Intentionally use a forward reference to an LLPounceableStatic that + // we believe is NOT YET CONSTRUCTED. This models the scenario in + // which a constructor in another translation unit runs before + // constructors in this one. We very specifically want callWhenReady() + // to work even in that case: we need the LLPounceableQueueImpl to be + // initialized even if the LLPounceable itself is not. + gForward.callWhenReady(boost::bind(setter, &static_check, _1)); + } +} nqcall; +// When this declaration is processed, we should enqueue the +// setter(&static_check, _1) call for when gForward is set non-NULL. Needless +// to remark, we want this call not to crash. + +// Now declare gForward. Its constructor should not run until after nqcall's. +LLPounceable<Data*, LLPounceableStatic> gForward; + +/***************************************************************************** +* TUT +*****************************************************************************/ +namespace tut +{ + struct llpounceable_data + { + }; + typedef test_group<llpounceable_data> llpounceable_group; + typedef llpounceable_group::object object; + llpounceable_group llpounceablegrp("llpounceable"); + + template<> template<> + void object::test<1>() + { + set_test_name("LLPounceableStatic out-of-order test"); + // LLPounceable<T, LLPounceableStatic>::callWhenReady() must work even + // before LLPounceable's constructor runs. That's the whole point of + // implementing it with an LLSingleton queue. This models (say) + // LLPounceableStatic<LLMessageSystem*, LLPounceableStatic>. + ensure("static_check should still be null", ! static_check); + Data myData("test<1>"); + gForward = &myData; // should run setter + ensure_equals("static_check should be &myData", static_check, &myData); + } + + template<> template<> + void object::test<2>() + { + set_test_name("LLPounceableQueue different queues"); + // We expect that LLPounceable<T, LLPounceableQueue> should have + // different queues because that specialization stores the queue + // directly in the LLPounceable instance. + Data *aptr = 0, *bptr = 0; + LLPounceable<Data*> a, b; + a.callWhenReady(boost::bind(setter, &aptr, _1)); + b.callWhenReady(boost::bind(setter, &bptr, _1)); + ensure("aptr should be null", ! aptr); + ensure("bptr should be null", ! bptr); + Data adata("a"), bdata("b"); + a = &adata; + ensure_equals("aptr should be &adata", aptr, &adata); + // but we haven't yet set b + ensure("bptr should still be null", !bptr); + b = &bdata; + ensure_equals("bptr should be &bdata", bptr, &bdata); + } + + template<> template<> + void object::test<3>() + { + set_test_name("LLPounceableStatic different queues"); + // LLPounceable<T, LLPounceableStatic> should also have a distinct + // queue for each instance, but that engages an additional map lookup + // because there's only one LLSingleton for each T. + Data *aptr = 0, *bptr = 0; + LLPounceable<Data*, LLPounceableStatic> a, b; + a.callWhenReady(boost::bind(setter, &aptr, _1)); + b.callWhenReady(boost::bind(setter, &bptr, _1)); + ensure("aptr should be null", ! aptr); + ensure("bptr should be null", ! bptr); + Data adata("a"), bdata("b"); + a = &adata; + ensure_equals("aptr should be &adata", aptr, &adata); + // but we haven't yet set b + ensure("bptr should still be null", !bptr); + b = &bdata; + ensure_equals("bptr should be &bdata", bptr, &bdata); + } + + template<> template<> + void object::test<4>() + { + set_test_name("LLPounceable<T> looks like T"); + // We want LLPounceable<T, TAG> to be drop-in replaceable for a plain + // T for read constructs. In particular, it should behave like a dumb + // pointer -- and with zero abstraction cost for such usage. + Data* aptr = 0; + Data a("a"); + // should be able to initialize a pounceable (when its constructor + // runs) + LLPounceable<Data*> pounceable(&a); + // should be able to pass LLPounceable<T> to function accepting T + setter(&aptr, pounceable); + ensure_equals("aptr should be &a", aptr, &a); + // should be able to dereference with * + ensure_equals("deref with *", (*pounceable).mData, "a"); + // should be able to dereference with -> + ensure_equals("deref with ->", pounceable->mData, "a"); + // bool operations + ensure("test with operator bool()", pounceable); + ensure("test with operator !()", ! (! pounceable)); + } + + template<> template<> + void object::test<5>() + { + set_test_name("Multiple callWhenReady() queue items"); + Data *p1 = 0, *p2 = 0, *p3 = 0; + Data a("a"); + LLPounceable<Data*> pounceable; + // queue up a couple setter() calls for later + pounceable.callWhenReady(boost::bind(setter, &p1, _1)); + pounceable.callWhenReady(boost::bind(setter, &p2, _1)); + // should still be pending + ensure("p1 should be null", !p1); + ensure("p2 should be null", !p2); + ensure("p3 should be null", !p3); + pounceable = 0; + // assigning a new empty value shouldn't flush the queue + ensure("p1 should still be null", !p1); + ensure("p2 should still be null", !p2); + ensure("p3 should still be null", !p3); + // using whichever syntax + pounceable.reset(0); + // try to make ensure messages distinct... tough to pin down which + // ensure() failed if multiple ensure() calls in the same test<n> have + // the same message! + ensure("p1 should again be null", !p1); + ensure("p2 should again be null", !p2); + ensure("p3 should again be null", !p3); + pounceable.reset(&a); // should flush queue + ensure_equals("p1 should be &a", p1, &a); + ensure_equals("p2 should be &a", p2, &a); + ensure("p3 still not set", !p3); + // immediate call + pounceable.callWhenReady(boost::bind(setter, &p3, _1)); + ensure_equals("p3 should be &a", p3, &a); + } + + template<> template<> + void object::test<6>() + { + set_test_name("queue order"); + std::string data; + LLPounceable<std::string*> pounceable; + pounceable.callWhenReady(boost::bind(append, _1, "a")); + pounceable.callWhenReady(boost::bind(append, _1, "b")); + pounceable.callWhenReady(boost::bind(append, _1, "c")); + pounceable = &data; + ensure_equals("callWhenReady() must preserve chronological order", + data, "abc"); + + std::string data2; + pounceable = NULL; + pounceable.callWhenReady(boost::bind(append, _1, "d")); + pounceable.callWhenReady(boost::bind(append, _1, "e")); + pounceable.callWhenReady(boost::bind(append, _1, "f")); + pounceable = &data2; + ensure_equals("LLPounceable must reset queue when fired", + data2, "def"); + } + + template<> template<> + void object::test<7>() + { + set_test_name("compile-fail test, uncomment to check"); + // The following declaration should fail: only LLPounceableQueue and + // LLPounceableStatic should work as tags. +// LLPounceable<Data*, int> pounceable; + } +} // namespace tut |