fist short at a new unit test for ImmutableSets. no bugs found, though :P

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61576 91177308-0d34-0410-b5e6-96231b3b80d8

unittests/ADT/ImmutableSetTest.cpp

@@ -0,0 +1,208 @@
+// llvm/unittest/ADT/ImmutableSetTest.cpp - ImmutableSet unit tests -*- C++ -*-//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "gtest/gtest.h"
+#include "llvm/ADT/ImmutableSet.h"
+
+using namespace llvm;
+
+namespace {
+class ImmutableSetTest : public testing::Test {
+};
+
+
+TEST_F(ImmutableSetTest, EmptyIntSetTest) {
+  ImmutableSet<int>::Factory f;
+
+  EXPECT_TRUE(f.GetEmptySet() == f.GetEmptySet());
+  EXPECT_FALSE(f.GetEmptySet() != f.GetEmptySet());
+  EXPECT_TRUE(f.GetEmptySet().isEmpty());
+
+  ImmutableSet<int> S = f.GetEmptySet();
+  EXPECT_EQ(0u, S.getHeight());
+  EXPECT_TRUE(S.begin() == S.end());
+  EXPECT_FALSE(S.begin() != S.end());
+}
+
+
+TEST_F(ImmutableSetTest, OneElemIntSetTest) {
+  ImmutableSet<int>::Factory f;
+  ImmutableSet<int> S = f.GetEmptySet();
+
+  ImmutableSet<int> S2 = f.Add(S, 3);
+  EXPECT_TRUE(S.isEmpty());
+  EXPECT_FALSE(S2.isEmpty());
+  EXPECT_FALSE(S == S2);
+  EXPECT_TRUE(S != S2);
+  EXPECT_FALSE(S.contains(3));
+  EXPECT_TRUE(S2.contains(3));
+  EXPECT_FALSE(S2.begin() == S2.end());
+  EXPECT_TRUE(S2.begin() != S2.end());
+
+  ImmutableSet<int> S3 = f.Add(S, 2);
+  EXPECT_TRUE(S.isEmpty());
+  EXPECT_FALSE(S3.isEmpty());
+  EXPECT_FALSE(S == S3);
+  EXPECT_TRUE(S != S3);
+  EXPECT_FALSE(S.contains(2));
+  EXPECT_TRUE(S3.contains(2));
+
+  EXPECT_FALSE(S2 == S3);
+  EXPECT_TRUE(S2 != S3);
+  EXPECT_FALSE(S2.contains(2));
+  EXPECT_FALSE(S3.contains(3));
+}
+
+TEST_F(ImmutableSetTest, MultiElemIntSetTest) {
+  ImmutableSet<int>::Factory f;
+  ImmutableSet<int> S = f.GetEmptySet();
+
+  ImmutableSet<int> S2 = f.Add(f.Add(f.Add(S, 3), 4), 5);
+  ImmutableSet<int> S3 = f.Add(f.Add(f.Add(S2, 9), 20), 43);
+  ImmutableSet<int> S4 = f.Add(S2, 9);
+
+  EXPECT_TRUE(S.isEmpty());
+  EXPECT_FALSE(S2.isEmpty());
+  EXPECT_FALSE(S3.isEmpty());
+  EXPECT_FALSE(S4.isEmpty());
+
+  EXPECT_FALSE(S.contains(3));
+  EXPECT_FALSE(S.contains(9));
+
+  EXPECT_TRUE(S2.contains(3));
+  EXPECT_TRUE(S2.contains(4));
+  EXPECT_TRUE(S2.contains(5));
+  EXPECT_FALSE(S2.contains(9));
+  EXPECT_FALSE(S2.contains(0));
+
+  EXPECT_TRUE(S3.contains(43));
+  EXPECT_TRUE(S3.contains(20));
+  EXPECT_TRUE(S3.contains(9));
+  EXPECT_TRUE(S3.contains(3));
+  EXPECT_TRUE(S3.contains(4));
+  EXPECT_TRUE(S3.contains(5));
+  EXPECT_FALSE(S3.contains(0));
+
+  EXPECT_TRUE(S4.contains(9));
+  EXPECT_TRUE(S4.contains(3));
+  EXPECT_TRUE(S4.contains(4));
+  EXPECT_TRUE(S4.contains(5));
+  EXPECT_FALSE(S4.contains(20));
+  EXPECT_FALSE(S4.contains(43));
+}
+
+TEST_F(ImmutableSetTest, RemoveIntSetTest) {
+  ImmutableSet<int>::Factory f;
+  ImmutableSet<int> S = f.GetEmptySet();
+
+  ImmutableSet<int> S2 = f.Add(f.Add(S, 4), 5);
+  ImmutableSet<int> S3 = f.Add(S2, 3);
+  ImmutableSet<int> S4 = f.Remove(S3, 3);
+
+  EXPECT_TRUE(S3.contains(3));
+  EXPECT_FALSE(S2.contains(3));
+  EXPECT_FALSE(S4.contains(3));
+
+  EXPECT_TRUE(S2 == S4);
+  EXPECT_TRUE(S3 != S2);
+  EXPECT_TRUE(S3 != S4);
+
+  EXPECT_TRUE(S3.contains(4));
+  EXPECT_TRUE(S3.contains(5));
+
+  EXPECT_TRUE(S4.contains(4));
+  EXPECT_TRUE(S4.contains(5));
+}
+
+
+static char *ptr; // tmp var
+struct MyIter {
+  int counter;
+  MyIter() : counter(0) {}
+  void operator()(char c) {
+    *ptr++ = c;
+    ++counter;
+  }
+};
+
+TEST_F(ImmutableSetTest, CallbackCharSetTest) {
+  ImmutableSet<char>::Factory f;
+  ImmutableSet<char> S = f.GetEmptySet();
+
+  ImmutableSet<char> S2 = f.Add(f.Add(f.Add(S, 'a'), 'e'), 'i');
+  ImmutableSet<char> S3 = f.Add(f.Add(S2, 'o'), 'u');
+
+  char buffer[6] = {0};
+  ptr = buffer;
+  S3.foreach<MyIter>();
+
+  ASSERT_EQ(buffer[0], 'a');
+  ASSERT_EQ(buffer[1], 'e');
+  ASSERT_EQ(buffer[2], 'i');
+  ASSERT_EQ(buffer[3], 'o');
+  ASSERT_EQ(buffer[4], 'u');
+  ASSERT_EQ(buffer[5], 0);
+}
+
+TEST_F(ImmutableSetTest, Callback2CharSetTest) {
+  ImmutableSet<char>::Factory f;
+  ImmutableSet<char> S = f.GetEmptySet();
+
+  ImmutableSet<char> S2 = f.Add(f.Add(f.Add(S, 'b'), 'c'), 'd');
+  ImmutableSet<char> S3 = f.Add(f.Add(f.Add(S2, 'f'), 'g'), 'h');
+
+  char buffer[7] = {0};
+  ptr = buffer;
+  MyIter obj;
+  S3.foreach<MyIter>(obj);
+
+  ASSERT_EQ(buffer[0], 'b');
+  ASSERT_EQ(buffer[1], 'c');
+  ASSERT_EQ(buffer[2], 'd');
+  ASSERT_EQ(buffer[3], 'f');
+  ASSERT_EQ(buffer[4], 'g');
+  ASSERT_EQ(buffer[5], 'h');
+  ASSERT_EQ(buffer[6], 0);
+
+  ASSERT_EQ(obj.counter, 6);
+
+  S2.foreach<MyIter>(obj);
+  ASSERT_EQ(obj.counter, 6+3);
+
+  S.foreach<MyIter>(obj);
+  ASSERT_EQ(obj.counter, 6+3+0);
+}
+
+TEST_F(ImmutableSetTest, IterLongSetTest) {
+  ImmutableSet<long>::Factory f;
+  ImmutableSet<long> S = f.GetEmptySet();
+
+  ImmutableSet<long> S2 = f.Add(f.Add(f.Add(S, 0), 1), 2);
+  ImmutableSet<long> S3 = f.Add(f.Add(f.Add(S2, 3), 4), 5);
+
+  int i = 0;
+  for (ImmutableSet<long>::iterator I = S.begin(), E = S.end(); I != E; ++I) {
+    ASSERT_EQ(*I, i++);
+  }
+  ASSERT_EQ(i, 0);
+
+  i = 0;
+  for (ImmutableSet<long>::iterator I = S2.begin(), E = S2.end(); I != E; ++I) {
+    ASSERT_EQ(*I, i++);
+  }
+  ASSERT_EQ(i, 3);
+
+  i = 0;
+  for (ImmutableSet<long>::iterator I = S3.begin(), E = S3.end(); I != E; I++) {
+    ASSERT_EQ(*I, i++);
+  }
+  ASSERT_EQ(i, 6);
+}
+
+}