gazelle?

rootfs/BUILD

@@ -1,13 +1,16 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "rootfs_lib",
-    srcs = [
-        "rootfs.go",
-        "rootfs_tests.go",
-    ],
+    srcs = ["rootfs.go"],
     importpath = "github.com/motiejus/code/undocker/rootfs",
     visibility = ["//visibility:public"],
+)
+
+go_test(
+    name = "rootfs_test",
+    srcs = ["rootfs_test.go"],
+    embed = [":rootfs"],
     deps = [
         "@com_github_stretchr_testify//assert",
         "@com_github_stretchr_testify//require",