best string

tests/StringTest.cpp

@@ -0,0 +1,107 @@
+#include <bstl/string.hpp>
+
+#include <cassert>
+#include <iostream>
+
+int main() {
+    using bstl::String;
+
+    // 基本构造和获取
+    String s1("Hello, World!");
+    assert(s1.length() == 13);
+    assert(s1.c_str() == std::string("Hello, World!"));
+
+    // split 分割
+    String s2("apple,banana,cherry");
+    auto parts = s2.split(",");
+    assert(parts.size() == 3);
+    assert(parts[0] == String("apple"));
+    assert(parts[1] == String("banana"));
+    assert(parts[2] == String("cherry"));
+
+    // join 连接
+    std::vector<String> words = {String("Hello"), String("World")};
+    String joined = String::join(words, " ");
+    assert(joined == String("Hello World"));
+
+    // replace 替换
+    String s3("hello hello world");
+    String replaced = s3.replace("hello", "hi");
+    assert(replaced == String("hi hi world"));
+
+    String replaced1 = s3.replace("hello", "hi", 1);
+    assert(replaced1 == String("hi hello world"));
+
+    // upper/lower
+    String s4("HeLLo WoRLd");
+    assert(s4.upper() == String("HELLO WORLD"));
+    assert(s4.lower() == String("hello world"));
+
+    // capitalize
+    String s5("hello");
+    assert(s5.capitalize() == String("Hello"));
+
+    // title
+    String s6("hello world");
+    assert(s6.title() == String("Hello World"));
+
+    // startswith/endswith
+    String s7("hello.txt");
+    assert(s7.startswith("hello"));
+    assert(s7.endswith(".txt"));
+    assert(!s7.startswith(".txt"));
+
+    // contains
+    assert(s7.contains("llo"));
+    assert(!s7.contains("xyz"));
+
+    // isdigit/isalpha/isalnum
+    assert(String("12345").isdigit());
+    assert(!String("123a").isdigit());
+    assert(String("abc").isalpha());
+    assert(!String("abc1").isalpha());
+    assert(String("abc123").isalnum());
+
+    // isupper/islower
+    assert(String("HELLO").isupper());
+    assert(String("hello").islower());
+    assert(!String("Hello").isupper());
+
+    // find/rfind/count
+    assert(s2.find("banana") == 6);
+    assert(s2.find("xyz") == -1);
+    assert(s3.count("hello") == 2);
+
+    // strip
+    String s8("  hello world  ");
+    assert(s8.strip() == String("hello world"));
+    assert(s8.lstrip() == String("hello world  "));
+    assert(s8.rstrip() == String("  hello world"));
+
+    // ljust/rjust/center
+    String s9("hi");
+    assert(s9.ljust(5, '.') == String("hi..."));
+    assert(s9.rjust(5, '.') == String("...hi"));
+    assert(s9.center(5, '.') == String(".hi.."));
+
+    // 字符串转换
+    assert(String("123").toInt() == 123);
+    assert(String("456789").toLongLong() == 456789);
+    assert(String("3.14").toDouble() == 3.14);
+
+    // 运算符
+    String sa("Hello");
+    String sb(" World");
+    String sc = sa + sb;
+    assert(sc == String("Hello World"));
+
+    sa += sb;
+    assert(sa == String("Hello World"));
+
+    // 比较
+    assert(String("abc") < String("def"));
+    assert(String("xyz") > String("abc"));
+
+    std::cout << "All String tests passed!\n";
+    return 0;
+}