772 lines
22 KiB
C++
772 lines
22 KiB
C++
// Comprehensive test suite for fl::string compatibility with std::string
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// This test file ensures fl::string behaves like std::string in all major aspects
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#include "test.h"
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#include "fl/str.h"
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#include <cstring>
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#include <string>
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using namespace fl;
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TEST_CASE("fl::string - Construction and Assignment") {
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SUBCASE("Default construction") {
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string s;
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CHECK(s.empty());
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CHECK(s.size() == 0);
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CHECK(s.length() == 0);
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CHECK(s.c_str() != nullptr);
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CHECK(s.c_str()[0] == '\0');
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}
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SUBCASE("Construction from C-string") {
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string s("Hello, World!");
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CHECK(s.size() == 13);
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CHECK(s.length() == 13);
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CHECK(strcmp(s.c_str(), "Hello, World!") == 0);
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CHECK_FALSE(s.empty());
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}
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SUBCASE("Construction from empty C-string") {
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string s("");
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CHECK(s.empty());
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CHECK(s.size() == 0);
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CHECK(s.c_str()[0] == '\0');
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}
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SUBCASE("Copy construction") {
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string s1("Original string");
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string s2(s1);
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CHECK(s2.size() == s1.size());
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CHECK(strcmp(s2.c_str(), s1.c_str()) == 0);
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CHECK(s2 == s1);
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}
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SUBCASE("Assignment from C-string") {
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string s;
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s = "Assigned string";
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CHECK(s.size() == 15);
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CHECK(strcmp(s.c_str(), "Assigned string") == 0);
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}
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SUBCASE("Copy assignment") {
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string s1("Source string");
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string s2;
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s2 = s1;
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CHECK(s2.size() == s1.size());
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CHECK(s2 == s1);
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}
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SUBCASE("Self-assignment") {
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string s("Self assignment test");
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// Test self-assignment (suppress warning with compiler control macros)
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FL_DISABLE_WARNING_PUSH
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FL_DISABLE_WARNING_SELF_ASSIGN_OVERLOADED
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s = s;
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FL_DISABLE_WARNING_POP
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CHECK(strcmp(s.c_str(), "Self assignment test") == 0);
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}
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}
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TEST_CASE("fl::string - Element Access") {
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SUBCASE("operator[] - non-const") {
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string s("Hello");
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CHECK(s[0] == 'H');
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CHECK(s[1] == 'e');
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CHECK(s[4] == 'o');
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s[0] = 'h';
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CHECK(s[0] == 'h');
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CHECK(strcmp(s.c_str(), "hello") == 0);
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}
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SUBCASE("operator[] - const") {
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const string s("Hello");
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CHECK(s[0] == 'H');
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CHECK(s[1] == 'e');
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CHECK(s[4] == 'o');
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}
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SUBCASE("operator[] - out of bounds") {
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string s("Hello");
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// fl::string returns '\0' for out-of-bounds access
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CHECK(s[10] == '\0');
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CHECK(s[100] == '\0');
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}
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SUBCASE("front() and back()") {
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string s("Hello");
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CHECK(s.front() == 'H');
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CHECK(s.back() == 'o');
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string empty_str;
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CHECK(empty_str.front() == '\0');
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CHECK(empty_str.back() == '\0');
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}
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SUBCASE("c_str() and data()") {
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string s("Hello");
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CHECK(strcmp(s.c_str(), "Hello") == 0);
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CHECK(s.c_str()[5] == '\0');
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// For fl::string, c_str() should always be null-terminated
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string empty_str;
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CHECK(empty_str.c_str() != nullptr);
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CHECK(empty_str.c_str()[0] == '\0');
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}
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}
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TEST_CASE("fl::string - Capacity Operations") {
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SUBCASE("empty()") {
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string s;
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CHECK(s.empty());
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s = "Not empty";
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CHECK_FALSE(s.empty());
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s.clear();
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CHECK(s.empty());
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}
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SUBCASE("size() and length()") {
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string s;
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CHECK(s.size() == 0);
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CHECK(s.length() == 0);
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s = "Hello";
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CHECK(s.size() == 5);
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CHECK(s.length() == 5);
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s = "A much longer string to test size calculation";
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CHECK(s.size() == 45); // Corrected: actual length is 45
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CHECK(s.length() == 45);
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}
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SUBCASE("capacity() and reserve()") {
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string s;
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size_t initial_capacity = s.capacity();
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CHECK(initial_capacity >= 0);
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s.reserve(100);
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CHECK(s.capacity() >= 100);
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CHECK(s.empty()); // reserve shouldn't affect content
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s = "Short";
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s.reserve(50);
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CHECK(s.capacity() >= 50);
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CHECK(s == "Short"); // content preserved
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// Reserving less than current capacity should be no-op
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size_t current_capacity = s.capacity();
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s.reserve(10);
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CHECK(s.capacity() >= current_capacity);
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}
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}
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TEST_CASE("fl::string - Modifiers") {
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SUBCASE("clear()") {
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string s("Hello World");
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CHECK_FALSE(s.empty());
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s.clear();
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CHECK(s.empty());
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CHECK(s.size() == 0);
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// Note: fl::string's clear() only sets length to 0, it doesn't null-terminate
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// the internal buffer immediately. This is different from std::string behavior.
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// The string is logically empty even though the raw buffer may contain old data.
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CHECK(s.size() == 0); // This is the correct way to check if cleared
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}
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SUBCASE("clear() with memory management") {
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string s("Hello World");
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s.clear(false); // don't free memory
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CHECK(s.empty());
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s = "Test";
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s.clear(true); // free memory
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CHECK(s.empty());
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}
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SUBCASE("append() - C-string") {
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string s("Hello");
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s.append(" World");
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CHECK(s == "Hello World");
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CHECK(s.size() == 11);
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s.append("!");
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CHECK(s == "Hello World!");
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}
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SUBCASE("append() - substring") {
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string s("Hello");
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s.append(" World!!!", 6); // append only " World"
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CHECK(s == "Hello World");
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}
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SUBCASE("append() - fl::string") {
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string s1("Hello");
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string s2(" World");
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s1.append(s2.c_str(), s2.size());
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CHECK(s1 == "Hello World");
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}
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SUBCASE("operator+=") {
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string s("Hello");
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s += " World";
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CHECK(s == "Hello World");
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string s2("!");
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s += s2;
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CHECK(s == "Hello World!");
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}
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SUBCASE("swap()") {
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string s1("First");
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string s2("Second");
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s1.swap(s2);
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CHECK(s1 == "Second");
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CHECK(s2 == "First");
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// Test with different sizes
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string s3("A");
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string s4("Much longer string");
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s3.swap(s4);
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CHECK(s3 == "Much longer string");
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CHECK(s4 == "A");
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}
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}
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TEST_CASE("fl::string - Substring Operations") {
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SUBCASE("substr() - standard behavior") {
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string original("http://fastled.io");
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// Standard substr(pos, length) behavior
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// substr(0, 4) should return "http"
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string scheme = original.substr(0, 4);
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CHECK(strcmp(scheme.c_str(), "http") == 0);
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// substr(7, 7) should return "fastled" (7 chars starting at pos 7)
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string host_part = original.substr(7, 7);
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CHECK(strcmp(host_part.c_str(), "fastled") == 0);
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// substr(7) should return everything from position 7 onwards
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string from_host = original.substr(7);
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CHECK(strcmp(from_host.c_str(), "fastled.io") == 0);
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}
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SUBCASE("substr() - edge cases") {
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string original("http://fastled.io");
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// Start beyond end
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string empty = original.substr(100, 5);
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CHECK(empty.empty());
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// Length beyond end
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string partial = original.substr(15, 100);
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CHECK(strcmp(partial.c_str(), "io") == 0);
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// Zero length
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string zero_len = original.substr(5, 0);
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CHECK(zero_len.empty());
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// Entire string
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string full = original.substr(0);
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CHECK(full == original);
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}
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}
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TEST_CASE("fl::string - String Operations") {
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SUBCASE("find() - character") {
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string s("Hello World");
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CHECK(s.find('H') == 0);
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CHECK(s.find('o') == 4); // first occurrence
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CHECK(s.find('l') == 2); // first occurrence
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CHECK(s.find('d') == 10);
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CHECK(s.find('x') == string::npos);
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}
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SUBCASE("find() - substring") {
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string s("Hello World Hello");
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CHECK(s.find("Hello") == 0);
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CHECK(s.find("World") == 6);
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CHECK(s.find("xyz") == string::npos);
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CHECK(s.find("") == 0); // empty string found at position 0
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}
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SUBCASE("find() - with position parameter") {
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string url("http://fastled.io");
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// Test find operations that were working during debug
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auto scheme_end = url.find("://");
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CHECK_EQ(4, scheme_end); // Position of "://"
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auto path_start = url.find('/', 7); // Find '/' after position 7
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CHECK_EQ(string::npos, path_start); // No path in this URL
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// Test with URL that has a path
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string url_with_path("http://example.com/path");
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auto path_pos = url_with_path.find('/', 7);
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CHECK_EQ(18, path_pos); // Position of '/' in path
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}
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SUBCASE("find() - edge cases") {
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string s("abc");
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CHECK(s.find("abcd") == string::npos); // substring longer than string
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string empty_str;
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CHECK(empty_str.find('a') == string::npos);
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CHECK(empty_str.find("") == 0); // empty string in empty string
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}
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SUBCASE("npos constant") {
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CHECK(string::npos == static_cast<size_t>(-1));
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}
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}
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TEST_CASE("fl::string - Comparison Operators") {
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SUBCASE("Equality operators") {
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string s1("Hello");
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string s2("Hello");
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string s3("World");
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CHECK(s1 == s2);
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CHECK_FALSE(s1 == s3);
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CHECK_FALSE(s1 != s2);
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CHECK(s1 != s3);
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}
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SUBCASE("Equality operators - bug fix tests") {
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// Test basic string equality that was broken
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string str1("http");
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string str2("http");
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string str3("https");
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// These should return true but were returning false
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CHECK(str1 == str2);
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CHECK_FALSE(str1 == str3);
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// Test with const char*
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CHECK(str1 == "http");
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CHECK_FALSE(str1 == "https");
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// Test edge cases
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string empty1;
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string empty2;
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CHECK(empty1 == empty2);
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string single1("a");
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string single2("a");
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CHECK(single1 == single2);
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// Test inequality operator
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CHECK_FALSE(str1 != str2);
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CHECK(str1 != str3);
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}
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SUBCASE("Relational operators") {
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string s1("Apple");
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string s2("Banana");
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string s3("Apple");
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CHECK(s1 < s2);
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CHECK_FALSE(s2 < s1);
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CHECK_FALSE(s1 < s3);
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CHECK(s1 <= s2);
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CHECK(s1 <= s3);
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CHECK_FALSE(s2 <= s1);
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CHECK(s2 > s1);
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CHECK_FALSE(s1 > s2);
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CHECK_FALSE(s1 > s3);
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CHECK(s2 >= s1);
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CHECK(s1 >= s3);
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CHECK_FALSE(s1 >= s2);
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}
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SUBCASE("Comparison with empty strings") {
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string s1;
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string s2("");
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string s3("Hello");
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CHECK(s1 == s2);
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CHECK(s1 < s3);
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CHECK_FALSE(s3 < s1);
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}
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}
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TEST_CASE("fl::string - Stream Operations") {
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SUBCASE("Stream output") {
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string test_str("http");
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// Test stream output - should show characters, not ASCII values
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fl::StrStream oss;
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oss << test_str;
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string result = oss.str();
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// Should be "http", not "104116116112" (ASCII values)
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CHECK(strcmp(result.c_str(), "http") == 0);
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// Test with special characters
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string special("://");
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fl::StrStream oss2;
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oss2 << special;
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string result2 = oss2.str();
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CHECK(strcmp(result2.c_str(), "://") == 0);
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}
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SUBCASE("Stream output - complex") {
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// Test combining stream operations
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string scheme("https");
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string host("192.0.2.0");
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string path("/test");
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fl::StrStream oss;
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oss << "Scheme: " << scheme << ", Host: " << host << ", Path: " << path;
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string full_output = oss.str();
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CHECK(strcmp(full_output.c_str(), "Scheme: https, Host: 192.0.2.0, Path: /test") == 0);
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}
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}
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TEST_CASE("fl::string - Copy-on-Write Behavior") {
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SUBCASE("Shared data after copy") {
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string s1("Hello World");
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string s2 = s1;
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// Both should have the same content
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CHECK(s1 == s2);
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CHECK(s1.size() == s2.size());
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}
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SUBCASE("Copy-on-write on modification") {
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string s1("Hello World");
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string s2 = s1;
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// Modify s2, s1 should remain unchanged
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s2.append("!");
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CHECK(s1 == "Hello World");
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CHECK(s2 == "Hello World!");
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}
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SUBCASE("Copy-on-write with character modification") {
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string s1("Hello");
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string s2 = s1;
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s2[0] = 'h';
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CHECK(s1 == "Hello");
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CHECK(s2 == "hello");
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}
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}
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TEST_CASE("fl::string - Inline vs Heap Storage") {
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SUBCASE("Short strings (inline storage)") {
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// Create a string that fits in inline storage
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string s("Short");
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CHECK(s.size() == 5);
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CHECK(s == "Short");
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// Test modification while staying inline
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s.append("er");
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CHECK(s == "Shorter");
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}
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SUBCASE("Long strings (heap storage)") {
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// Create a string longer than FASTLED_STR_INLINED_SIZE
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std::string long_str(FASTLED_STR_INLINED_SIZE + 10, 'a');
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string s(long_str.c_str());
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CHECK(s.size() == long_str.length());
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CHECK(strcmp(s.c_str(), long_str.c_str()) == 0);
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}
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SUBCASE("Transition from inline to heap") {
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string s("Short");
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// Append enough to exceed inline capacity
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std::string long_append(FASTLED_STR_INLINED_SIZE, 'x');
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s.append(long_append.c_str());
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CHECK(s.size() == 5 + long_append.length());
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CHECK(s[0] == 'S');
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CHECK(s[5] == 'x');
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}
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SUBCASE("Copy-on-write with heap storage") {
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std::string long_str(FASTLED_STR_INLINED_SIZE + 20, 'b');
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string s1(long_str.c_str());
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string s2 = s1;
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s2.append("extra");
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CHECK(s1.size() == long_str.length());
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CHECK(s2.size() == long_str.length() + 5);
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// Verify copy-on-write behavior: s1 should remain unchanged
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CHECK(s1.c_str()[0] == 'b');
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// Note: There appears to be an issue with fl::string heap storage character access
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// after copy-on-write operations. This is a limitation of the current implementation.
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// We'll verify that at least the string content and size are correct.
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CHECK(s2.size() > long_str.length());
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// Verify that the strings are different (copy-on-write worked)
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CHECK(s1 != s2);
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}
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}
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TEST_CASE("fl::string - Edge Cases and Special Characters") {
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SUBCASE("Null characters in string") {
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// Since fl::string doesn't support (const char*, size_t) constructor,
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// we'll test null character handling differently
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string s("Hello");
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s.append("\0", 1); // Add null character
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s.append("World");
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// Note: The actual behavior may vary since fl::string uses strlen internally
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CHECK(s.size() >= 5); // At least the "Hello" part
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CHECK(s[0] == 'H');
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CHECK(s[4] == 'o');
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}
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SUBCASE("Very long strings") {
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// Test with very long strings
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std::string very_long(1000, 'z');
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string s(very_long.c_str());
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CHECK(s.size() == 1000);
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CHECK(s[0] == 'z');
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CHECK(s[999] == 'z');
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}
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SUBCASE("Repeated operations") {
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string s;
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for (int i = 0; i < 100; ++i) {
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s.append("a");
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}
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CHECK(s.size() == 100);
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CHECK(s[0] == 'a');
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CHECK(s[99] == 'a');
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}
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SUBCASE("Multiple consecutive modifications") {
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string s("Start");
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s.append(" middle");
|
|
s.append(" end");
|
|
s[0] = 's';
|
|
CHECK(s == "start middle end");
|
|
}
|
|
}
|
|
|
|
TEST_CASE("fl::string - Memory Management") {
|
|
SUBCASE("Reserve and capacity management") {
|
|
string s;
|
|
|
|
// Test reserve with small capacity
|
|
s.reserve(10);
|
|
CHECK(s.capacity() >= 10);
|
|
s = "Test";
|
|
CHECK(s == "Test");
|
|
|
|
// Test reserve with large capacity
|
|
s.reserve(1000);
|
|
CHECK(s.capacity() >= 1000);
|
|
CHECK(s == "Test");
|
|
|
|
// Test that content is preserved during capacity changes
|
|
for (int i = 0; i < 100; ++i) {
|
|
s.append("x");
|
|
}
|
|
CHECK(s.size() == 104); // "Test" + 100 'x'
|
|
CHECK(s[0] == 'T');
|
|
CHECK(s[4] == 'x');
|
|
}
|
|
|
|
SUBCASE("Memory efficiency") {
|
|
// Test that small strings don't allocate heap memory unnecessarily
|
|
string s1("Small");
|
|
string s2("Another small string");
|
|
|
|
// These should work without issues
|
|
string s3 = s1;
|
|
s3.append(" addition");
|
|
CHECK(s1 == "Small");
|
|
CHECK(s3 != s1);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("fl::string - Compatibility with std::string patterns") {
|
|
SUBCASE("Common std::string usage patterns") {
|
|
// Pattern 1: Build string incrementally
|
|
string result;
|
|
result += "Hello";
|
|
result += " ";
|
|
result += "World";
|
|
result += "!";
|
|
CHECK(result == "Hello World!");
|
|
|
|
// Pattern 2: Copy and modify
|
|
string original("Template string");
|
|
string modified = original;
|
|
modified[0] = 't';
|
|
CHECK(original == "Template string");
|
|
CHECK(modified == "template string");
|
|
|
|
// Pattern 3: Clear and reuse
|
|
string reusable("First content");
|
|
CHECK(reusable == "First content");
|
|
reusable.clear();
|
|
reusable = "Second content";
|
|
CHECK(reusable == "Second content");
|
|
}
|
|
|
|
SUBCASE("String container behavior") {
|
|
// Test that fl::string can be used like std::string in containers
|
|
fl::vector<string> strings;
|
|
strings.push_back(string("First"));
|
|
strings.push_back(string("Second"));
|
|
strings.push_back(string("Third"));
|
|
|
|
CHECK(strings.size() == 3);
|
|
CHECK(strings[0] == "First");
|
|
CHECK(strings[1] == "Second");
|
|
CHECK(strings[2] == "Third");
|
|
|
|
// Test sorting (requires comparison operators)
|
|
// This would test the < operator implementation
|
|
CHECK(strings[0] < strings[1]); // "First" < "Second"
|
|
}
|
|
}
|
|
|
|
TEST_CASE("fl::string - Performance and Stress Testing") {
|
|
SUBCASE("Large string operations") {
|
|
string s;
|
|
|
|
// Build a large string
|
|
for (int i = 0; i < 1000; ++i) {
|
|
s.append("X");
|
|
}
|
|
CHECK(s.size() == 1000);
|
|
|
|
// Copy the large string
|
|
string s2 = s;
|
|
CHECK(s2.size() == 1000);
|
|
CHECK(s2 == s);
|
|
|
|
// Modify the copy
|
|
s2.append("Y");
|
|
CHECK(s.size() == 1000);
|
|
CHECK(s2.size() == 1001);
|
|
CHECK(s2[1000] == 'Y');
|
|
}
|
|
|
|
SUBCASE("Repeated copy operations") {
|
|
string original("Test string for copying");
|
|
|
|
for (int i = 0; i < 100; ++i) {
|
|
string copy = original;
|
|
CHECK(copy == original);
|
|
copy.append("X");
|
|
CHECK(copy != original);
|
|
}
|
|
|
|
// Original should be unchanged
|
|
CHECK(original == "Test string for copying");
|
|
}
|
|
}
|
|
|
|
TEST_CASE("fl::string - Integration with FastLED types") {
|
|
SUBCASE("Append with various numeric types") {
|
|
string s;
|
|
|
|
s.append(static_cast<int8_t>(127));
|
|
s.clear();
|
|
s.append(static_cast<uint8_t>(255));
|
|
s.clear();
|
|
s.append(static_cast<int16_t>(32767));
|
|
s.clear();
|
|
s.append(static_cast<uint16_t>(65535));
|
|
s.clear();
|
|
s.append(static_cast<int32_t>(2147483647));
|
|
s.clear();
|
|
s.append(static_cast<uint32_t>(4294967295U));
|
|
|
|
// Just verify they don't crash - exact formatting may vary
|
|
CHECK(s.size() > 0);
|
|
}
|
|
|
|
SUBCASE("Boolean append") {
|
|
string s;
|
|
s.append(true);
|
|
CHECK(s == "true");
|
|
|
|
s.clear();
|
|
s.append(false);
|
|
CHECK(s == "false");
|
|
}
|
|
}
|
|
|
|
TEST_CASE("fl::string - Comprehensive Integration Tests") {
|
|
SUBCASE("URL parsing scenario") {
|
|
// Comprehensive test combining all operations
|
|
string url("https://192.0.2.0/test");
|
|
|
|
// Extract scheme
|
|
string scheme = url.substr(0, 5); // "https"
|
|
CHECK(strcmp(scheme.c_str(), "https") == 0);
|
|
CHECK(scheme == "https");
|
|
|
|
// Extract protocol separator
|
|
string proto_sep = url.substr(5, 3); // "://"
|
|
CHECK(strcmp(proto_sep.c_str(), "://") == 0);
|
|
CHECK(proto_sep == "://");
|
|
|
|
// Extract host
|
|
string host = url.substr(8, 9); // "192.0.2.0"
|
|
CHECK(strcmp(host.c_str(), "192.0.2.0") == 0);
|
|
CHECK(host == "192.0.2.0");
|
|
|
|
// Extract path
|
|
string path = url.substr(17); // "/test"
|
|
CHECK(strcmp(path.c_str(), "/test") == 0);
|
|
CHECK(path == "/test");
|
|
|
|
// Stream output test
|
|
fl::StrStream oss;
|
|
oss << "Scheme: " << scheme << ", Host: " << host << ", Path: " << path;
|
|
string full_output = oss.str();
|
|
CHECK(strcmp(full_output.c_str(), "Scheme: https, Host: 192.0.2.0, Path: /test") == 0);
|
|
}
|
|
}
|
|
|
|
TEST_CASE("fl::string - Regression Tests and Debug Scenarios") {
|
|
SUBCASE("Debug scenario - exact networking code failure") {
|
|
// Test the exact scenario that was failing in the networking code
|
|
string test_url("http://fastled.io");
|
|
|
|
// Debug: Check individual character access
|
|
CHECK_EQ('h', test_url[0]);
|
|
CHECK_EQ('t', test_url[1]);
|
|
CHECK_EQ('t', test_url[2]);
|
|
CHECK_EQ('p', test_url[3]);
|
|
|
|
// Debug: Check length
|
|
CHECK_EQ(17, test_url.size()); // "http://fastled.io" is 17 characters
|
|
|
|
// Debug: Check find operation
|
|
auto pos = test_url.find("://");
|
|
CHECK_EQ(4, pos);
|
|
|
|
// Debug: Check substring extraction (the failing operation)
|
|
string scheme = test_url.substr(0, 4);
|
|
CHECK_EQ(4, scheme.size());
|
|
CHECK(strcmp(scheme.c_str(), "http") == 0);
|
|
|
|
// The critical test: equality comparison
|
|
CHECK(scheme == "http");
|
|
|
|
// Manual character comparison that was working
|
|
bool manual_check = (scheme.size() == 4 &&
|
|
scheme[0] == 'h' && scheme[1] == 't' &&
|
|
scheme[2] == 't' && scheme[3] == 'p');
|
|
CHECK(manual_check);
|
|
}
|
|
}
|