| 1 | /* |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under both the BSD-style license (found in the |
| 6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| 7 | * in the COPYING file in the root directory of this source tree). |
| 8 | */ |
| 9 | #include "utils/Range.h" |
| 10 | |
| 11 | #include <gtest/gtest.h> |
| 12 | #include <string> |
| 13 | |
| 14 | using namespace pzstd; |
| 15 | |
| 16 | // Range is directly copied from folly. |
| 17 | // Just some sanity tests to make sure everything seems to work. |
| 18 | |
| 19 | TEST(Range, Constructors) { |
| 20 | StringPiece empty; |
| 21 | EXPECT_TRUE(empty.empty()); |
| 22 | EXPECT_EQ(0, empty.size()); |
| 23 | |
| 24 | std::string str = "hello"; |
| 25 | { |
| 26 | Range<std::string::const_iterator> piece(str.begin(), str.end()); |
| 27 | EXPECT_EQ(5, piece.size()); |
| 28 | EXPECT_EQ('h', *piece.data()); |
| 29 | EXPECT_EQ('o', *(piece.end() - 1)); |
| 30 | } |
| 31 | |
| 32 | { |
| 33 | StringPiece piece(str.data(), str.size()); |
| 34 | EXPECT_EQ(5, piece.size()); |
| 35 | EXPECT_EQ('h', *piece.data()); |
| 36 | EXPECT_EQ('o', *(piece.end() - 1)); |
| 37 | } |
| 38 | |
| 39 | { |
| 40 | StringPiece piece(str); |
| 41 | EXPECT_EQ(5, piece.size()); |
| 42 | EXPECT_EQ('h', *piece.data()); |
| 43 | EXPECT_EQ('o', *(piece.end() - 1)); |
| 44 | } |
| 45 | |
| 46 | { |
| 47 | StringPiece piece(str.c_str()); |
| 48 | EXPECT_EQ(5, piece.size()); |
| 49 | EXPECT_EQ('h', *piece.data()); |
| 50 | EXPECT_EQ('o', *(piece.end() - 1)); |
| 51 | } |
| 52 | } |
| 53 | |
| 54 | TEST(Range, Modifiers) { |
| 55 | StringPiece range("hello world"); |
| 56 | ASSERT_EQ(11, range.size()); |
| 57 | |
| 58 | { |
| 59 | auto hello = range.subpiece(0, 5); |
| 60 | EXPECT_EQ(5, hello.size()); |
| 61 | EXPECT_EQ('h', *hello.data()); |
| 62 | EXPECT_EQ('o', *(hello.end() - 1)); |
| 63 | } |
| 64 | { |
| 65 | auto hello = range; |
| 66 | hello.subtract(6); |
| 67 | EXPECT_EQ(5, hello.size()); |
| 68 | EXPECT_EQ('h', *hello.data()); |
| 69 | EXPECT_EQ('o', *(hello.end() - 1)); |
| 70 | } |
| 71 | { |
| 72 | auto world = range; |
| 73 | world.advance(6); |
| 74 | EXPECT_EQ(5, world.size()); |
| 75 | EXPECT_EQ('w', *world.data()); |
| 76 | EXPECT_EQ('d', *(world.end() - 1)); |
| 77 | } |
| 78 | |
| 79 | std::string expected = "hello world"; |
| 80 | EXPECT_EQ(expected, std::string(range.begin(), range.end())); |
| 81 | EXPECT_EQ(expected, std::string(range.data(), range.size())); |
| 82 | } |