allow KMT test regex for all or multiple packages (#33050)

tasks/kmt.py

@@ -874,11 +874,10 @@ def build_run_config(run: str | None, packages: list[str]):
     c: dict[str, Any] = {}
 
     if len(packages) == 0:
-        return {"filters": {"*": {"exclude": False}}}
+        packages = ["*"]
 
     for p in packages:
-        if p[:2] == "./":
-            p = p[2:]
+        p = p.removeprefix("./")
         if run is not None:
             c["filters"] = {p: {"run-only": [run]}}
         else:
@@ -1202,16 +1201,10 @@ def test(
             info(f"[+] Preparing {component} for {arch}")
             _prepare(ctx, stack, component, arch, packages=packages, verbose=verbose, domains=domains)
 
-    if run is not None and packages is None:
-        raise Exit("Package must be provided when specifying test")
-
     pkgs = []
     if packages is not None:
         pkgs = [os.path.relpath(os.path.realpath(p)) for p in go_package_dirs(packages.split(","), [NPM_TAG, BPF_TAG])]
 
-    if run is not None and len(pkgs) > 1:
-        raise Exit("Only a single package can be specified when running specific tests")
-
     paths = KMTPaths(stack, Arch.local())  # Arch is not relevant to the test result paths, which is what we want now
     shutil.rmtree(paths.test_results, ignore_errors=True)  # Reset test-results folder
 

test/new-e2e/system-probe/test-runner/main.go

@@ -158,9 +158,15 @@ func buildCommandArgs(pkg string, xmlpath string, jsonpath string, testArgs []st
 	if config, ok := packagesRunConfig[pkg]; ok && config.RunOnly != nil {
 		args = append(args, "-test.run", strings.Join(config.RunOnly, "|"))
 	}
+	if config, ok := packagesRunConfig[matchAllPackages]; ok && config.RunOnly != nil {
+		args = append(args, "-test.run", strings.Join(config.RunOnly, "|"))
+	}
 	if config, ok := packagesRunConfig[pkg]; ok && config.Skip != nil {
 		args = append(args, "-test.skip", strings.Join(config.Skip, "|"))
 	}
+	if config, ok := packagesRunConfig[matchAllPackages]; ok && config.Skip != nil {
+		args = append(args, "-test.skip", strings.Join(config.Skip, "|"))
+	}
 
 	return args
 }