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ef1d6eb8ba
With initializer lists there is a really neat idiomatic way to write
this, 'ArrayRef.equals({1, 2, 3, 4, 5})'. Remove the equal method which
always had a hard limit on the number of arguments. I considered
rewriting it with variadic templates but that's not really a good fit
for a function with homogeneous arguments.
'ArrayRef == {1, 2, 3, 4, 5}' would've been even more awesome, but C++11
doesn't allow init lists with binary operators.
llvm-svn: 230907
115 lines
3.7 KiB
C++
115 lines
3.7 KiB
C++
//===- llvm/unittest/ADT/ArrayRefTest.cpp - ArrayRef unit tests -----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/ADT/ArrayRef.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/Support/raw_ostream.h"
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#include "gtest/gtest.h"
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#include <vector>
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using namespace llvm;
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// Check that the ArrayRef-of-pointer converting constructor only allows adding
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// cv qualifiers (not removing them, or otherwise changing the type)
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static_assert(
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std::is_convertible<ArrayRef<int *>, ArrayRef<const int *>>::value,
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"Adding const");
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static_assert(
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std::is_convertible<ArrayRef<int *>, ArrayRef<volatile int *>>::value,
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"Adding volatile");
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static_assert(!std::is_convertible<ArrayRef<int *>, ArrayRef<float *>>::value,
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"Changing pointer of one type to a pointer of another");
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static_assert(
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!std::is_convertible<ArrayRef<const int *>, ArrayRef<int *>>::value,
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"Removing const");
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static_assert(
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!std::is_convertible<ArrayRef<volatile int *>, ArrayRef<int *>>::value,
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"Removing volatile");
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namespace llvm {
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TEST(ArrayRefTest, AllocatorCopy) {
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BumpPtrAllocator Alloc;
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static const uint16_t Words1[] = { 1, 4, 200, 37 };
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ArrayRef<uint16_t> Array1 = makeArrayRef(Words1, 4);
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static const uint16_t Words2[] = { 11, 4003, 67, 64000, 13 };
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ArrayRef<uint16_t> Array2 = makeArrayRef(Words2, 5);
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ArrayRef<uint16_t> Array1c = Array1.copy(Alloc);
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ArrayRef<uint16_t> Array2c = Array2.copy(Alloc);;
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EXPECT_TRUE(Array1.equals(Array1c));
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EXPECT_NE(Array1.data(), Array1c.data());
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EXPECT_TRUE(Array2.equals(Array2c));
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EXPECT_NE(Array2.data(), Array2c.data());
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}
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TEST(ArrayRefTest, DropBack) {
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static const int TheNumbers[] = {4, 8, 15, 16, 23, 42};
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ArrayRef<int> AR1(TheNumbers);
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ArrayRef<int> AR2(TheNumbers, AR1.size() - 1);
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EXPECT_TRUE(AR1.drop_back().equals(AR2));
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}
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TEST(ArrayRefTest, Equals) {
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static const int A1[] = {1, 2, 3, 4, 5, 6, 7, 8};
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ArrayRef<int> AR1(A1);
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EXPECT_TRUE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 8}));
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EXPECT_FALSE(AR1.equals({8, 1, 2, 4, 5, 6, 6, 7}));
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EXPECT_FALSE(AR1.equals({2, 4, 5, 6, 6, 7, 8, 1}));
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EXPECT_FALSE(AR1.equals({0, 1, 2, 4, 5, 6, 6, 7}));
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EXPECT_FALSE(AR1.equals({1, 2, 42, 4, 5, 6, 7, 8}));
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EXPECT_FALSE(AR1.equals({42, 2, 3, 4, 5, 6, 7, 8}));
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EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 42}));
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EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7}));
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EXPECT_FALSE(AR1.equals({1, 2, 3, 4, 5, 6, 7, 8, 9}));
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ArrayRef<int> AR1a = AR1.drop_back();
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EXPECT_TRUE(AR1a.equals({1, 2, 3, 4, 5, 6, 7}));
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EXPECT_FALSE(AR1a.equals({1, 2, 3, 4, 5, 6, 7, 8}));
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ArrayRef<int> AR1b = AR1a.slice(2, 4);
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EXPECT_TRUE(AR1b.equals({3, 4, 5, 6}));
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EXPECT_FALSE(AR1b.equals({2, 3, 4, 5, 6}));
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EXPECT_FALSE(AR1b.equals({3, 4, 5, 6, 7}));
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}
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TEST(ArrayRefTest, EmptyEquals) {
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EXPECT_TRUE(ArrayRef<unsigned>() == ArrayRef<unsigned>());
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}
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TEST(ArrayRefTest, ConstConvert) {
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int buf[4];
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for (int i = 0; i < 4; ++i)
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buf[i] = i;
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static int *A[] = {&buf[0], &buf[1], &buf[2], &buf[3]};
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ArrayRef<const int *> a((ArrayRef<int *>(A)));
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a = ArrayRef<int *>(A);
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}
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static std::vector<int> ReturnTest12() { return {1, 2}; }
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static void ArgTest12(ArrayRef<int> A) {
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EXPECT_EQ(2U, A.size());
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EXPECT_EQ(1, A[0]);
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EXPECT_EQ(2, A[1]);
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}
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TEST(ArrayRefTest, InitializerList) {
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ArrayRef<int> A = { 0, 1, 2, 3, 4 };
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for (int i = 0; i < 5; ++i)
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EXPECT_EQ(i, A[i]);
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std::vector<int> B = ReturnTest12();
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A = B;
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EXPECT_EQ(1, A[0]);
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EXPECT_EQ(2, A[1]);
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ArgTest12({1, 2});
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}
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} // end anonymous namespace
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