unittests/ADT/ImmutableMapTest.cpp

   1 //===----------- ImmutableMapTest.cpp - ImmutableMap unit tests ------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/ADT/ImmutableMap.h"
  10 #include "gtest/gtest.h"
  11
  12 using namespace llvm;
  13
  14 namespace {
  15
  16 TEST(ImmutableMapTest, EmptyIntMapTest) {
  17   ImmutableMap<int, int>::Factory f;
  18
  19   EXPECT_TRUE(f.getEmptyMap() == f.getEmptyMap());
  20   EXPECT_FALSE(f.getEmptyMap() != f.getEmptyMap());
  21   EXPECT_TRUE(f.getEmptyMap().isEmpty());
  22
  23   ImmutableMap<int, int> S = f.getEmptyMap();
  24   EXPECT_EQ(0u, S.getHeight());
  25   EXPECT_TRUE(S.begin() == S.end());
  26   EXPECT_FALSE(S.begin() != S.end());
  27 }
  28
  29 TEST(ImmutableMapTest, MultiElemIntMapTest) {
  30   ImmutableMap<int, int>::Factory f;
  31   ImmutableMap<int, int> S = f.getEmptyMap();
  32
  33   ImmutableMap<int, int> S2 = f.add(f.add(f.add(S, 3, 10), 4, 11), 5, 12);
  34
  35   EXPECT_TRUE(S.isEmpty());
  36   EXPECT_FALSE(S2.isEmpty());
  37
  38   EXPECT_EQ(nullptr, S.lookup(3));
  39   EXPECT_EQ(nullptr, S.lookup(9));
  40
  41   EXPECT_EQ(10, *S2.lookup(3));
  42   EXPECT_EQ(11, *S2.lookup(4));
  43   EXPECT_EQ(12, *S2.lookup(5));
  44
  45   EXPECT_EQ(5, S2.getMaxElement()->first);
  46   EXPECT_EQ(3U, S2.getHeight());
  47 }
  48
  49 }