Initial Course

modules/13_cpp23/test/expected_test.cpp

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+#include "expected.hpp"
+#include <gtest/gtest.h>
+
+TEST(Expected, ParseInt) {
+    EXPECT_EQ(*cpp23::parse_int("42"), 42);
+    EXPECT_EQ(cpp23::parse_int(""), std::unexpected(cpp23::ParseError::EmptyInput));
+}
+
+TEST(Expected, SafeSqrt) {
+    EXPECT_DOUBLE_EQ(*cpp23::safe_sqrt(9), 3.0);
+    EXPECT_FALSE(cpp23::safe_sqrt(-1).has_value());
+}
+
+TEST(Expected, ChainParseAndDouble) {
+    EXPECT_EQ(*cpp23::chain_parse_and_double("21"), 42);
+}

modules/13_cpp23/test/mdspan_test.cpp

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+#include "mdspan.hpp"
+#include <gtest/gtest.h>
+
+TEST(Mdspan, MatrixElement) {
+    auto storage = cpp23::make_row_major_matrix(2, 3, 1);
+    const auto matrix = std::mdspan<const int, std::extents<int, std::dynamic_extent, std::dynamic_extent>>(
+        storage.data(), 2, 3);
+    EXPECT_EQ(cpp23::matrix_element(matrix, 1, 2), 1);
+}
+
+TEST(Mdspan, RowSums) {
+    std::vector<int> storage = {1, 2, 3, 4, 5, 6};
+    const auto matrix = std::mdspan<const int, std::extents<int, std::dynamic_extent, std::dynamic_extent>>(
+        storage.data(), 2, 3);
+    EXPECT_EQ(cpp23::row_sums(matrix), (std::vector<int>{6, 15}));
+}

modules/13_cpp23/test/print_and_format_test.cpp

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+#include "print_and_format.hpp"
+#include <gtest/gtest.h>
+
+TEST(PrintAndFormat, FormatGreeting) {
+    EXPECT_EQ(cpp23::format_greeting("Ada", 100), "Ada scored 100 points");
+}
+
+TEST(PrintAndFormat, FormatTableRow) {
+    EXPECT_EQ(cpp23::format_table_row({"A", "B", "C"}), "A | B | C");
+}
+
+TEST(PrintAndFormat, FormatHex) {
+    EXPECT_EQ(cpp23::format_hex(255), "0xFF");
+}

modules/13_cpp23/test/ranges_zip_test.cpp

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+#include "ranges_zip.hpp"
+#include <gtest/gtest.h>
+
+TEST(RangesZip, ZipSum) {
+    EXPECT_EQ(cpp23::zip_sum({1, 2, 3}, {4, 5, 6}), (std::vector<int>{5, 7, 9}));
+}
+
+TEST(RangesZip, ChunkStrings) {
+    EXPECT_EQ(cpp23::chunk_strings({"a", "b", "c", "d"}, 2),
+              (std::vector<std::vector<std::string>>{{"a", "b"}, {"c", "d"}}));
+}
+
+TEST(RangesZip, AdjacentDifferences) {
+    EXPECT_EQ(cpp23::adjacent_differences({1, 4, 9, 16}), (std::vector<int>{3, 5, 7}));
+}