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//===- InterleavedRangeTest.cpp - Unit tests for interleaved format -------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/InterleavedRange.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/Support/raw_ostream.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
TEST(InterleavedRangeTest, VectorInt) {
SmallVector<int> V = {0, 1, 2, 3};
// First, make sure that the raw print API works as expected.
std::string Buff;
raw_string_ostream OS(Buff);
OS << interleaved(V);
EXPECT_EQ("0, 1, 2, 3", Buff);
Buff.clear();
OS << interleaved_array(V);
EXPECT_EQ("[0, 1, 2, 3]", Buff);
// In the rest of the tests, use `.str()` for convenience.
EXPECT_EQ("0, 1, 2, 3", interleaved(V).str());
EXPECT_EQ("{{0,1,2,3}}", interleaved(V, ",", "{{", "}}").str());
EXPECT_EQ("[0, 1, 2, 3]", interleaved_array(V).str());
EXPECT_EQ("[0;1;2;3]", interleaved_array(V, ";").str());
EXPECT_EQ("0;1;2;3", interleaved(V, ";").str());
}
TEST(InterleavedRangeTest, VectorIntEmpty) {
SmallVector<int> V = {};
EXPECT_EQ("", interleaved(V).str());
EXPECT_EQ("{{}}", interleaved(V, ",", "{{", "}}").str());
EXPECT_EQ("[]", interleaved_array(V).str());
EXPECT_EQ("", interleaved(V, ";").str());
}
TEST(InterleavedRangeTest, VectorIntOneElem) {
SmallVector<int> V = {42};
EXPECT_EQ("42", interleaved(V).str());
EXPECT_EQ("{{42}}", interleaved(V, ",", "{{", "}}").str());
EXPECT_EQ("[42]", interleaved_array(V).str());
EXPECT_EQ("42", interleaved(V, ";").str());
}
struct CustomPrint {
int N;
friend raw_ostream &operator<<(raw_ostream &OS, const CustomPrint &CP) {
OS << "$$" << CP.N << "##";
return OS;
}
};
TEST(InterleavedRangeTest, CustomPrint) {
CustomPrint V[] = {{3}, {4}, {5}};
EXPECT_EQ("$$3##, $$4##, $$5##", interleaved(V).str());
EXPECT_EQ("{{$$3##;$$4##;$$5##}}", interleaved(V, ";", "{{", "}}").str());
EXPECT_EQ("[$$3##, $$4##, $$5##]", interleaved_array(V).str());
}
struct CustomDoublingOStream : raw_string_ostream {
unsigned NumCalled = 0;
using raw_string_ostream::raw_string_ostream;
friend CustomDoublingOStream &operator<<(CustomDoublingOStream &OS, int V) {
++OS.NumCalled;
static_cast<raw_string_ostream &>(OS) << (2 * V);
return OS;
}
};
TEST(InterleavedRangeTest, CustomOStream) {
// Make sure that interleaved calls the stream operator on the derived class,
// and that it returns a reference to the same stream type.
int V[] = {3, 4, 5};
std::string Buf;
CustomDoublingOStream OS(Buf);
OS << interleaved(V) << 22;
EXPECT_EQ("6, 8, 1044", Buf);
EXPECT_EQ(OS.NumCalled, 4u);
}
} // namespace
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