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[5638] Added commenary to simpleAlloc tests.

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As a result of review.
This commit is contained in:
Marcin Siodelski
2018-06-05 09:52:19 +02:00
parent 28641c3be2
commit e8ed8fe0fd
2 changed files with 30 additions and 3 deletions
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21
src/lib/dhcpsrv/tests/alloc_engine4_unittest.cc
View File

@@ -47,7 +47,16 @@ TEST_F(AllocEngine4Test, constructor) {
EXPECT_THROW(x->getAllocator(Lease::TYPE_PD), BadValue);
}
// This test checks if the simple IPv4 allocation can succeed
// This test checks if two simple IPv4 allocations succeed and that the
// statistics is properly updated. Prior to the second allocation it
// resets the pointer to the last allocated address within the address
// pool. This causes the engine to walk over the already allocated
// address and then pick the first available address for the second
// allocation. Because the allocation engine checks the callouts next
// step status after each attempt to allocate an address, this test
// also sets this status to non-default value prior to the second
// allocation attempt, to make sure that this unexpected status will
// not interfere with the allocation.
TEST_F(AllocEngine4Test, simpleAlloc4) {
boost::scoped_ptr<AllocEngine> engine;
ASSERT_NO_THROW(engine.reset(new AllocEngine(AllocEngine::ALLOC_ITERATIVE,
@@ -81,6 +90,7 @@ TEST_F(AllocEngine4Test, simpleAlloc4) {
// Assigned addresses should have incremented.
EXPECT_TRUE(testStatistics("assigned-addresses", 1, subnet_->getID()));
// Second allocation starts here.
uint8_t hwaddr2_data[] = { 0, 0xfe, 0xfe, 0xfe, 0xfe, 0xfe};
HWAddrPtr hwaddr2(new HWAddr(hwaddr2_data, sizeof(hwaddr2_data), HTYPE_ETHER));
AllocEngine::ClientContext4 ctx2(subnet_, ClientIdPtr(), hwaddr2, IOAddress("0.0.0.0"),
@@ -88,12 +98,18 @@ TEST_F(AllocEngine4Test, simpleAlloc4) {
false);
ctx2.query_.reset(new Pkt4(DHCPREQUEST, 1234));
// Set the next step to non-default value to verify that it doesn't
// affect the allocation.
ctx2.callout_handle_ = HooksManager::createCalloutHandle();
ctx2.callout_handle_->setStatus(CalloutHandle::NEXT_STEP_SKIP);
// Set the last allocated to the beginning of the pool. The allocation
// engine should detect that the first address is already allocated and
// assign the first available one.
pool_->resetLastAllocated();
lease = engine->allocateLease4(ctx2);
// The new lease has been allocated, so the old lease should not exist.
EXPECT_FALSE(ctx2.old_lease_);
@@ -106,6 +122,9 @@ TEST_F(AllocEngine4Test, simpleAlloc4) {
// Now check that the lease in LeaseMgr has the same parameters
detailCompareLease(lease, from_mgr);
// Assigned addresses should have incremented.
EXPECT_TRUE(testStatistics("assigned-addresses", 2, subnet_->getID()));
}
// This test checks if the fake allocation (for DHCPDISCOVER) can succeed

12
src/lib/dhcpsrv/tests/alloc_engine6_unittest.cc
View File

@@ -67,8 +67,16 @@ TEST_F(AllocEngine6Test, constructor) {
EXPECT_THROW(x->getAllocator(Lease::TYPE_V4), BadValue);
}
// This test checks if the simple allocation (REQUEST) can succeed
// and the stats counter is properly bumped by 1
// This test checks if two simple IPv6 allocations succeed and that the
// statistics is properly updated. Prior to the second allocation it
// resets the pointer to the last allocated address within the address
// pool. This causes the engine to walk over the already allocated
// address and then pick the first available address for the second
// allocation. Because the allocation engine checks the callouts next
// step status after each attempt to allocate an address, this test
// also sets this status to non-default value prior to the second
// allocation attempt, to make sure that this unexpected status will
// not interfere with the allocation.
TEST_F(AllocEngine6Test, simpleAlloc6) {
// Assigned count should be zero.
EXPECT_TRUE(testStatistics("assigned-nas", 0, subnet_->getID()));