add functional and nestest conformance test suite

build.zig

@@ -4,19 +4,41 @@ pub fn build(b: *std.Build) void {
     const target = b.standardTargetOptions(.{});
     const optimize = b.standardOptimizeOption(.{});
 
-    const exe = b.addExecutable(.{
-        .name = "6soz",
-        .root_source_file = b.path("src/main.zig"),
+    const cpu_mod = b.createModule(.{
         .target = target,
         .optimize = optimize,
+        .root_source_file = b.path("src/cpu/root.zig"),
     });
 
-    b.installArtifact(exe);
-
-    const test_step = b.step("test", "Run unit tests");
-    const exe_tests = b.addTest(.{
-        .root_module = exe.root_module,
+    const system_mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .root_source_file = b.path("src/system/root.zig"),
     });
-    const run_exe_tests = b.addRunArtifact(exe_tests);
-    test_step.dependOn(&run_exe_tests.step);
+
+    const platform_mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .root_source_file = b.path("src/platform/root.zig"),
+    });
+
+    const frontend_mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .root_source_file = b.path("src/frontend/root.zig"),
+    });
+
+    const exe_mod = b.createModule(.{
+        .target = target,
+        .optimize = optimize,
+        .root_source_file = b.path("src/main.zig"),
+    });
+
+    const test_step = b.step("test", "Run 6soz tests");
+
+    inline for (&.{ cpu_mod, system_mod, platform_mod, frontend_mod, exe_mod }) |mod| {
+        const mod_test = b.addTest(.{ .root_module = mod });
+        const mod_cmd = b.addRunArtifact(mod_test);
+        test_step.dependOn(&mod_cmd.step);
+    }
 }