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//===-- Unittests for StringView ------------------------------------------===//
//
// 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 "src/__support/CPP/StringView.h"
#include "utils/UnitTest/Test.h"
TEST(LlvmLibcStringViewTest, InitializeCheck) {
__llvm_libc::cpp::StringView v;
ASSERT_EQ(v.size(), size_t(0));
ASSERT_TRUE(v.data() == nullptr);
v = __llvm_libc::cpp::StringView("");
ASSERT_EQ(v.size(), size_t(0));
ASSERT_TRUE(v.data() == nullptr);
v = __llvm_libc::cpp::StringView(nullptr);
ASSERT_EQ(v.size(), size_t(0));
ASSERT_TRUE(v.data() == nullptr);
v = __llvm_libc::cpp::StringView(nullptr, 10);
ASSERT_EQ(v.size(), size_t(0));
ASSERT_TRUE(v.data() == nullptr);
v = __llvm_libc::cpp::StringView("abc", 0);
ASSERT_EQ(v.size(), size_t(0));
ASSERT_TRUE(v.data() == nullptr);
v = __llvm_libc::cpp::StringView("123456789");
ASSERT_EQ(v.size(), size_t(9));
}
TEST(LlvmLibcStringViewTest, Equals) {
__llvm_libc::cpp::StringView v("abc");
ASSERT_TRUE(v.equals(__llvm_libc::cpp::StringView("abc")));
ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView()));
ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("")));
ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("123")));
ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("abd")));
ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("aaa")));
ASSERT_FALSE(v.equals(__llvm_libc::cpp::StringView("abcde")));
}
TEST(LlvmLibcStringViewTest, RemovePrefix) {
__llvm_libc::cpp::StringView v("123456789");
auto p = v.remove_prefix(0);
ASSERT_EQ(p.size(), size_t(9));
ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("123456789")));
p = v.remove_prefix(4);
ASSERT_EQ(p.size(), size_t(5));
ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("56789")));
p = v.remove_prefix(9);
ASSERT_EQ(p.size(), size_t(0));
ASSERT_TRUE(p.data() == nullptr);
p = v.remove_prefix(10);
ASSERT_EQ(p.size(), size_t(0));
ASSERT_TRUE(p.data() == nullptr);
}
TEST(LlvmLibcStringViewTest, RemoveSuffix) {
__llvm_libc::cpp::StringView v("123456789");
auto p = v.remove_suffix(0);
ASSERT_EQ(p.size(), size_t(9));
ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("123456789")));
p = v.remove_suffix(4);
ASSERT_EQ(p.size(), size_t(5));
ASSERT_TRUE(p.equals(__llvm_libc::cpp::StringView("12345")));
p = v.remove_suffix(9);
ASSERT_EQ(p.size(), size_t(0));
ASSERT_TRUE(p.data() == nullptr);
p = v.remove_suffix(10);
ASSERT_EQ(p.size(), size_t(0));
ASSERT_TRUE(p.data() == nullptr);
}
TEST(LlvmLibcStringViewTest, TrimSingleChar) {
__llvm_libc::cpp::StringView v(" 123456789 ");
auto t = v.trim(' ');
ASSERT_EQ(t.size(), size_t(9));
ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("123456789")));
v = __llvm_libc::cpp::StringView("====12345==");
t = v.trim(' ');
ASSERT_EQ(v.size(), size_t(11));
ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("====12345==")));
t = v.trim('=');
ASSERT_EQ(t.size(), size_t(5));
ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("12345")));
v = __llvm_libc::cpp::StringView("12345===");
t = v.trim('=');
ASSERT_EQ(t.size(), size_t(5));
ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("12345")));
v = __llvm_libc::cpp::StringView("===========12345");
t = v.trim('=');
ASSERT_EQ(t.size(), size_t(5));
ASSERT_TRUE(t.equals(__llvm_libc::cpp::StringView("12345")));
v = __llvm_libc::cpp::StringView("============");
t = v.trim('=');
ASSERT_EQ(t.size(), size_t(0));
ASSERT_TRUE(t.data() == nullptr);
v = __llvm_libc::cpp::StringView();
t = v.trim(' ');
ASSERT_EQ(t.size(), size_t(0));
ASSERT_TRUE(t.data() == nullptr);
v = __llvm_libc::cpp::StringView("");
t = v.trim(' ');
ASSERT_EQ(t.size(), size_t(0));
ASSERT_TRUE(t.data() == nullptr);
}
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