forked from OSchip/llvm-project
128 lines
3.9 KiB
C++
128 lines
3.9 KiB
C++
//===-- Unittests for StringView ------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "utils/CPP/StringView.h"
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#include "utils/UnitTest/Test.h"
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TEST(LlvmLibcStringViewTest, InitializeCheck) {
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__llvm_libc::cpp::StringView v;
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ASSERT_EQ(v.size(), size_t(0));
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ASSERT_TRUE(v.data() == nullptr);
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v = __llvm_libc::cpp::StringView("");
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ASSERT_EQ(v.size(), size_t(0));
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ASSERT_TRUE(v.data() == nullptr);
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v = __llvm_libc::cpp::StringView(nullptr);
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ASSERT_EQ(v.size(), size_t(0));
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ASSERT_TRUE(v.data() == nullptr);
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v = __llvm_libc::cpp::StringView(nullptr, 10);
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ASSERT_EQ(v.size(), size_t(0));
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ASSERT_TRUE(v.data() == nullptr);
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v = __llvm_libc::cpp::StringView("abc", 0);
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ASSERT_EQ(v.size(), size_t(0));
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ASSERT_TRUE(v.data() == nullptr);
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v = __llvm_libc::cpp::StringView("123456789");
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ASSERT_EQ(v.size(), size_t(9));
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}
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TEST(LlvmLibcStringViewTest, Equals) {
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__llvm_libc::cpp::StringView v("abc");
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ASSERT_TRUE(v.equals(__llvm_libc::cpp::StringView("abc")));
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ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView()));
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ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("")));
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ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("123")));
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ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("abd")));
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ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("aaa")));
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ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("abcde")));
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}
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TEST(LlvmLibcStringViewTest, RemovePrefix) {
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__llvm_libc::cpp::StringView v("123456789");
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auto p = v.remove_prefix(0);
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ASSERT_EQ(p.size(), size_t(9));
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ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("123456789")));
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p = v.remove_prefix(4);
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ASSERT_EQ(p.size(), size_t(5));
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ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("56789")));
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p = v.remove_prefix(9);
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ASSERT_EQ(p.size(), size_t(0));
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ASSERT_TRUE(p.data() == nullptr);
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p = v.remove_prefix(10);
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ASSERT_EQ(p.size(), size_t(0));
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ASSERT_TRUE(p.data() == nullptr);
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}
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TEST(LlvmLibcStringViewTest, RemoveSuffix) {
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__llvm_libc::cpp::StringView v("123456789");
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auto p = v.remove_suffix(0);
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ASSERT_EQ(p.size(), size_t(9));
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ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("123456789")));
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p = v.remove_suffix(4);
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ASSERT_EQ(p.size(), size_t(5));
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ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("12345")));
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p = v.remove_suffix(9);
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ASSERT_EQ(p.size(), size_t(0));
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ASSERT_TRUE(p.data() == nullptr);
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p = v.remove_suffix(10);
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ASSERT_EQ(p.size(), size_t(0));
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ASSERT_TRUE(p.data() == nullptr);
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}
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TEST(LlvmLibcStringViewTest, TrimSingleChar) {
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__llvm_libc::cpp::StringView v(" 123456789 ");
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auto t = v.trim(' ');
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ASSERT_EQ(t.size(), size_t(9));
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ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("123456789")));
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v = __llvm_libc::cpp::StringView("====12345==");
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t = v.trim(' ');
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ASSERT_EQ(v.size(), size_t(11));
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ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("====12345==")));
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t = v.trim('=');
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ASSERT_EQ(t.size(), size_t(5));
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ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("12345")));
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v = __llvm_libc::cpp::StringView("12345===");
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t = v.trim('=');
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ASSERT_EQ(t.size(), size_t(5));
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ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("12345")));
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v = __llvm_libc::cpp::StringView("===========12345");
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t = v.trim('=');
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ASSERT_EQ(t.size(), size_t(5));
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ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("12345")));
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v = __llvm_libc::cpp::StringView("============");
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t = v.trim('=');
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ASSERT_EQ(t.size(), size_t(0));
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ASSERT_TRUE(t.data() == nullptr);
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v = __llvm_libc::cpp::StringView();
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t = v.trim(' ');
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ASSERT_EQ(t.size(), size_t(0));
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ASSERT_TRUE(t.data() == nullptr);
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v = __llvm_libc::cpp::StringView("");
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t = v.trim(' ');
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ASSERT_EQ(t.size(), size_t(0));
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ASSERT_TRUE(t.data() == nullptr);
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}
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