Method execute

tests/HostTests/modules/CStringArray.cpp:12–259

	}

	void execute() override
	{
		// Use to help diagnose any issues
		/*
		auto debug = [](const CStringArray& csa) {
			debug_hex(DBG, "csa", csa.c_str(), csa.length());
			debug_d("csa.count() = %u", csa.count());
		};
		 */

		// FlashStrings are super-handy for this sort of thing as they're counted
		DEFINE_FSTR_LOCAL(FS_Basic, "a\0"
									"b\0"
									"c\0"
									"d\0");
		DEFINE_FSTR_LOCAL(FS_BasicJoined, "a,b,c,d")

		TEST_CASE("Empty construction")
		{
			// Default object is empty
			CStringArray csa1;
			REQUIRE(csa1.count() == 0);
			CStringArray csa2("");
			REQUIRE(csa2.count() == 0);
			// Contains one empty string
			CStringArray csa3("\0", 1);
			REQUIRE(csa3.count() == 1);
			// Construct using assignment from String
			String s(FS_Basic);
			CStringArray csa4 = s;
			REQUIRE(csa4.count() == 4);
		}

		TEST_CASE("Destruction")
		{
			CStringArray csa = FS_Basic;
			REQUIRE(csa.count() == 4);
			csa.clear();
			REQUIRE(csa.count() == 0);
			// Assignment to null should clear the array
			csa = FS_Basic;
			REQUIRE(csa.count() == 4);
			csa = nullptr;
			REQUIRE(csa.count() == 0);
		}

		TEST_CASE("Single element")
		{
			CStringArray csa = "a";
			REQUIRE(csa.count() == 1);
			csa = "a\0b\0c\0";
			REQUIRE(csa.count() == 1);
		}

		TEST_CASE("Array, no final NUL")
		{
			CStringArray csa = F("a\0"
								 "b\0"