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Make WaitForAllNodesAlive in test_graph.cpp more reliable #854

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Nov 4, 2020
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Make WaitForAllNodesAlive in test_graph.cpp more reliable #854

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Make WaitForAllNodesAlive in test_graph.cpp more reliable, also fix l…
ivanpauno Nov 3, 2020
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fix
ivanpauno Nov 3, 2020
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ivanpauno Nov 3, 2020
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28 changes: 13 additions & 15 deletions rcl/test/rcl/test_graph.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -946,25 +946,23 @@ class NodeGraphMultiNodeFixture : public CLASSNAME(TestGraphFixture, RMW_IMPLEME

void WaitForAllNodesAlive()
{
rcl_ret_t ret;
rcutils_string_array_t node_names = rcutils_get_zero_initialized_string_array();
rcutils_string_array_t node_namespaces = rcutils_get_zero_initialized_string_array();
OSRF_TESTING_TOOLS_CPP_SCOPE_EXIT(
{
ret = rcutils_string_array_fini(&node_names);
ASSERT_EQ(RCUTILS_RET_OK, ret);
ret = rcutils_string_array_fini(&node_namespaces);
ASSERT_EQ(RCUTILS_RET_OK, ret);
});
// wait for all 3 nodes to be discovered: remote_node, old_node, node
size_t attempts = 0;
size_t max_attempts = 4;
while (node_names.size < 3) {
size_t attempts = 0u;
size_t max_attempts = 10u;
size_t last_size = 0u;
do {
std::this_thread::sleep_for(std::chrono::seconds(1));
ret = rcl_get_node_names(this->remote_node_ptr, allocator, &node_names, &node_namespaces);
rcutils_string_array_t node_names = rcutils_get_zero_initialized_string_array();
rcutils_string_array_t node_namespaces = rcutils_get_zero_initialized_string_array();
ASSERT_EQ(
RCL_RET_OK,
rcl_get_node_names(this->remote_node_ptr, allocator, &node_names, &node_namespaces));
attempts++;
last_size = node_names.size;
ASSERT_EQ(RCUTILS_RET_OK, rcutils_string_array_fini(&node_names));
ASSERT_EQ(RCUTILS_RET_OK, rcutils_string_array_fini(&node_namespaces));
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ASSERT_LE(attempts, max_attempts) << "Unable to attain all required nodes";
}
} while (last_size < 3u);
}

/**
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