refactor: implement matrix iterator

1 files changed, 53 insertions, 0 deletions

diff --git a/test/string_matrix.test.cpp b/test/string_matrix.test.cpp
new file mode 100644
index 0000000..522a274
--- /dev/null
+++ b/test/string_matrix.test.cpp
@@ -0,0 +1,53 @@
+#include "engine/graphics/string_matrix.hpp"
+#include "engine/data/bounds.hpp"
+
+#include <doctest/doctest.h>
+#include <type_traits>
+
+constexpr uint32_t MATRIX_WIDTH = 76;
+constexpr uint32_t MATRIX_HEIGHT = 31;
+
+TEST_CASE("String matrix")
+{
+	auto string_matrix =
+		StringMatrix(Bounds({.width = MATRIX_WIDTH, .height = MATRIX_HEIGHT}));
+
+	SUBCASE("Can set & get elements")
+	{
+		// NOLINTNEXTLINE(cppcoreguidelines-avoid-magic-numbers,readability-magic-numbers)
+		const auto position = Vector2({.x = 56, .y = 20});
+
+		string_matrix.set(position, "#");
+
+		CHECK(string_matrix.get(position) == "#");
+	}
+
+	SUBCASE("Can iterate")
+	{
+		CHECK(std::is_same_v<decltype(string_matrix.begin()),
+							 MatrixIterator<std::string_view>>);
+
+		CHECK(std::is_same_v<decltype(string_matrix.end()),
+							 MatrixIterator<std::string_view>>);
+
+		uint32_t row_iter_cnt = 0;
+
+		for (auto row : string_matrix)
+		{
+			row_iter_cnt++;
+
+			CHECK(std::is_same_v<decltype(row), MatrixRow<std::string_view>>);
+
+			uint32_t col_iter_cnt = 0;
+
+			for (auto &col : row)
+			{
+				col_iter_cnt++;
+			}
+
+			CHECK(col_iter_cnt == MATRIX_WIDTH);
+		}
+
+		CHECK(row_iter_cnt == MATRIX_HEIGHT);
+	}
+}