new tests

interfaces/Crafter.Build-Clang.cppm

@@ -159,6 +159,24 @@ export namespace Crafter {
         std::vector<std::string> linkFlags;
         std::vector<Test> tests;
         CRAFTER_API void GetInterfacesAndImplementations(std::span<fs::path> interfaces, std::span<fs::path> implementations);
+        // Declare a test. Sources default to `tests/<name>/main.cpp` resolved
+        // against this Configuration's path; target/march/mtune/debug are
+        // inherited from this Configuration so cross-arch projects don't have
+        // to re-specify. Returns a builder for chaining defines, deps, etc.
+        // Defined in Crafter.Build:Test.
+        CRAFTER_API struct TestBuilder AddTest(std::string_view name);
+        // Same as AddTest, but compiles the parent's `interfaces` directly
+        // into this test's Configuration (rather than going through a dep).
+        // Use when the test must rebuild those interfaces with its own
+        // compile flags — typically per-march SIMD codegen.
+        CRAFTER_API struct TestBuilder AddTest(std::string_view name, std::span<fs::path> interfaces);
+        // Math-style fan-out: one Test per MarchTier, all sharing the same
+        // `tests/<name>/main.cpp` source and the same interface set, each
+        // compiled with the tier's `-march`/`-mtune`. Test names are
+        // `<name>-<march>`.
+        CRAFTER_API void AddMarchVariants(std::string_view name,
+                                          std::span<fs::path> interfaces,
+                                          std::span<const struct MarchTier> tiers);
         // Suffix that uniquely identifies this Configuration's compile state.
         // target+march+mtune are spelled out for readability; the rest
         // (type, debug, sysroot, defines, compileFlags) collapse into a short