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a264f42bd6
This implements Maps.difference() helper function in C++. We need it to translate various Origin call-sites that use it. The implementation is written from scratch with Guava code used as reference to preserve semantics. Signed-off-by: Pekka Enberg <penberg@cloudius-systems.com>
93 lines
2.2 KiB
C++
93 lines
2.2 KiB
C++
/*
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* Copyright 2015 Cloudius Systems
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*/
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#define BOOST_TEST_DYN_LINK
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#define BOOST_TEST_MODULE core
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#include <boost/test/unit_test.hpp>
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#include "map_difference.hh"
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#include <map>
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using namespace std;
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BOOST_AUTO_TEST_CASE(both_empty) {
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map<int, int> left;
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map<int, int> right;
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auto diff = difference(left, right);
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BOOST_REQUIRE(diff.entries_only_on_left.empty());
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BOOST_REQUIRE(diff.entries_only_on_right.empty());
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BOOST_REQUIRE(diff.entries_in_common.empty());
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BOOST_REQUIRE(diff.entries_differing.empty());
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}
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BOOST_AUTO_TEST_CASE(left_empty) {
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map<int, int> left;
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map<int, int> right;
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right.emplace(1, 100);
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right.emplace(2, 200);
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auto diff = difference(left, right);
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BOOST_REQUIRE(diff.entries_only_on_left.empty());
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BOOST_REQUIRE(diff.entries_only_on_right == right);
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BOOST_REQUIRE(diff.entries_in_common.empty());
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BOOST_REQUIRE(diff.entries_differing.empty());
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}
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BOOST_AUTO_TEST_CASE(right_empty) {
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map<int, int> left;
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map<int, int> right;
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left.emplace(1, 100);
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left.emplace(2, 200);
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auto diff = difference(left, right);
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BOOST_REQUIRE(diff.entries_only_on_left == left);
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BOOST_REQUIRE(diff.entries_only_on_right.empty());
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BOOST_REQUIRE(diff.entries_in_common.empty());
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BOOST_REQUIRE(diff.entries_differing.empty());
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}
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BOOST_AUTO_TEST_CASE(both_same) {
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map<int, int> left;
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map<int, int> right;
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left.emplace(1, 100);
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left.emplace(2, 200);
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right.emplace(1, 100);
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right.emplace(2, 200);
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auto diff = difference(left, right);
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BOOST_REQUIRE(diff.entries_only_on_left.empty());
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BOOST_REQUIRE(diff.entries_only_on_right.empty());
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BOOST_REQUIRE(diff.entries_in_common == left);
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BOOST_REQUIRE(diff.entries_differing.empty());
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}
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BOOST_AUTO_TEST_CASE(differing_values) {
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map<int, int> left;
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map<int, int> right;
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left.emplace(1, 100);
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left.emplace(2, 200);
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right.emplace(1, 1000);
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right.emplace(2, 2000);
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auto diff = difference(left, right);
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BOOST_REQUIRE(diff.entries_only_on_left.empty());
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BOOST_REQUIRE(diff.entries_only_on_right.empty());
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BOOST_REQUIRE(diff.entries_in_common.empty());
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BOOST_REQUIRE(diff.entries_differing.size() == 2);
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}
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