internal/rosa/cmake: run tests

This uses the standard CMake test target.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/zstd.go

@@ -13,12 +13,23 @@ func (t Toolchain) newZstd() (pkg.Artifact, string) {
 		"zstd-"+version+".tar.gz",
 		checksum,
 		pkg.TarGzip,
-	), nil, &CMakeHelper{
+	), &PackageAttr{
+		// tests Makefile assumes writable source
+		Writable: true,
+		Chmod:    true,
+	}, &CMakeHelper{
 		Append: []string{"build", "cmake"},
 		Cache: []KV{
 			{"CMAKE_BUILD_TYPE", "Release"},
 		},
-	}), version
+		Test: `
+make -C /usr/src/zstd/tests datagen
+ZSTD_BIN=/cure/programs/zstd /usr/src/zstd/tests/playTests.sh
+`,
+	},
+		Make,
+		Diffutils,
+	), version
 }
 func init() {
 	artifactsM[Zstd] = Metadata{