fix the error that Zig build system does not fail when a test fails

lib/init-exe/build.zig

@@ -58,10 +58,11 @@ pub fn build(b: *std.Build) void {
         .target = target,
         .optimize = optimize,
     });
+    const exe_tests_run = b.addRunArtifact(exe_tests);
 
     // Similar to creating the run step earlier, this exposes a `test` step to
     // the `zig build --help` menu, providing a way for the user to request
     // running the unit tests.
     const test_step = b.step("test", "Run unit tests");
-    test_step.dependOn(&exe_tests.step);
+    test_step.dependOn(&exe_tests_run.step);
 }

lib/init-lib/build.zig

@@ -35,10 +35,11 @@ pub fn build(b: *std.Build) void {
         .target = target,
         .optimize = optimize,
     });
+    const main_tests_run = b.addRunArtifact(main_tests);
 
     // This creates a build step. It will be visible in the `zig build --help` menu,
     // and can be selected like this: `zig build test`
     // This will evaluate the `test` step rather than the default, which is "install".
     const test_step = b.step("test", "Run library tests");
-    test_step.dependOn(&main_tests.step);
+    test_step.dependOn(&main_tests_run.step);
 }