statistics: refactor test package

Signed-off-by: Weizhen Wang <wangweizhen@pingcap.com>

pkg/statistics/handle/globalstats/BUILD.bazel

@@ -34,17 +34,28 @@ go_library(
 go_test(
     name = "globalstats_test",
     timeout = "short",
-    srcs = ["topn_bench_test.go"],
+    srcs = [
+        "globalstats_test.go",
+        "main_test.go",
+        "topn_bench_test.go",
+    ],
     embed = [":globalstats"],
     flaky = True,
+    shard_count = 14,
     deps = [
+        "//pkg/config",
+        "//pkg/parser/model",
         "//pkg/parser/mysql",
         "//pkg/sessionctx/stmtctx",
         "//pkg/statistics",
+        "//pkg/testkit",
+        "//pkg/testkit/testsetup",
         "//pkg/types",
         "//pkg/util/chunk",
         "//pkg/util/codec",
+        "@com_github_pingcap_failpoint//:failpoint",
         "@com_github_stretchr_testify//require",
         "@com_github_tiancaiamao_gp//:gp",
+        "@org_uber_go_goleak//:goleak",
     ],
 )

pkg/statistics/handle/lockstats/BUILD.bazel

@@ -24,25 +24,34 @@ go_test(
     name = "lockstats_test",
     timeout = "short",
     srcs = [
+        "lock_partition_stats_test.go",
         "lock_stats_test.go",
+        "lock_table_stats_test.go",
+        "main_test.go",
         "query_lock_test.go",
         "unlock_stats_test.go",
     ],
     embed = [":lockstats"],
     flaky = True,
-    shard_count = 13,
+    shard_count = 34,
     deps = [
+        "//pkg/config",
+        "//pkg/domain",
         "//pkg/kv",
+        "//pkg/parser/model",
         "//pkg/parser/mysql",
         "//pkg/sessionctx",
         "//pkg/statistics/handle/util",
+        "//pkg/testkit",
+        "//pkg/testkit/testsetup",
         "//pkg/types",
         "//pkg/util/chunk",
         "//pkg/util/mock",
         "//pkg/util/sqlexec/mock",
         "@com_github_pingcap_errors//:errors",
         "@com_github_stretchr_testify//require",
         "@com_github_tikv_client_go_v2//util",
+        "@org_uber_go_goleak//:goleak",
         "@org_uber_go_mock//gomock",
     ],
 )