diff --git a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/test/TestDSL.kt b/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/test/TestDSL.kt
index 4666d39e0..6726d4e55 100644
--- a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/test/TestDSL.kt
+++ b/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/test/TestDSL.kt
@@ -11,9 +11,6 @@
 
 package net.mamoe.mirai.test
 
-import kotlinx.coroutines.CoroutineScope
-import kotlin.coroutines.CoroutineContext
-import kotlin.coroutines.EmptyCoroutineContext
 import kotlin.test.assertEquals
 import kotlin.test.assertFalse
 import kotlin.test.assertNotEquals
@@ -32,9 +29,4 @@ fun Boolean.shouldBeFalse() = assertFalse { this }
 infix fun <E> E.shouldBeEqualTo(another: E) = assertEquals(another, this)
 
 @TestDSL
-infix fun <E> E.shouldNotBeEqualTo(another: E) = assertNotEquals(another, this)
-
-internal expect fun <R> runBlocking(
-    context: CoroutineContext = EmptyCoroutineContext,
-    block: suspend CoroutineScope.() -> R
-): R
\ No newline at end of file
+infix fun <E> E.shouldNotBeEqualTo(another: E) = assertNotEquals(another, this)
\ No newline at end of file
diff --git a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/event/EventTests.kt b/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/event/EventTests.kt
similarity index 97%
rename from mirai-core/src/commonTest/kotlin/net/mamoe/mirai/event/EventTests.kt
rename to mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/event/EventTests.kt
index 6e265171b..75aa50a91 100644
--- a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/event/EventTests.kt
+++ b/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/event/EventTests.kt
@@ -11,7 +11,7 @@ package net.mamoe.mirai.event
 
 import kotlinx.coroutines.CompletableJob
 import kotlinx.coroutines.GlobalScope
-import net.mamoe.mirai.test.runBlocking
+import net.mamoe.mirai.utils.internal.runBlocking
 import kotlin.test.Test
 import kotlin.test.assertTrue
 
diff --git a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/message/SubscribingGetTest.kt b/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/message/SubscribingGetTest.kt
similarity index 88%
rename from mirai-core/src/commonTest/kotlin/net/mamoe/mirai/message/SubscribingGetTest.kt
rename to mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/message/SubscribingGetTest.kt
index 31594cf30..08facd865 100644
--- a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/message/SubscribingGetTest.kt
+++ b/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/message/SubscribingGetTest.kt
@@ -13,7 +13,6 @@ import kotlinx.coroutines.*
 import net.mamoe.mirai.event.TestEvent
 import net.mamoe.mirai.event.broadcast
 import net.mamoe.mirai.event.syncFromEvent
-import net.mamoe.mirai.test.runBlocking
 import kotlin.coroutines.CoroutineContext
 import kotlin.coroutines.EmptyCoroutineContext
 import kotlin.coroutines.resume
@@ -23,16 +22,16 @@ import kotlin.test.assertFailsWith
 internal class SubscribingGetTest {
 
     @Test
-    fun testSyncFromEvent(): Unit = runBlocking {
-        withTimeout(500) {
+    fun testSyncFromEvent() {
+        runBlockingWithTimeout(1000) {
             suspendCancellableCoroutine<Unit> { cont ->
                 launch {
-                    syncFromEvent(5000) { _: TestEvent ->
+                    syncFromEvent(500) { _: TestEvent ->
                         cont.resume(Unit)
                     }
                 }
-                delay(200)
                 launch {
+                    delay(200)
                     TestEvent().broadcast()
                 }
             }
diff --git a/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/test/runBlocking.kt b/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/test/runBlocking.kt
deleted file mode 100644
index e954e0e5b..000000000
--- a/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/test/runBlocking.kt
+++ /dev/null
@@ -1,9 +0,0 @@
-package net.mamoe.mirai.test
-
-import kotlinx.coroutines.CoroutineScope
-import kotlin.coroutines.CoroutineContext
-
-internal actual fun <R> runBlocking(
-    context: CoroutineContext,
-    block: suspend CoroutineScope.() -> R
-): R = kotlinx.coroutines.runBlocking(context, block)
\ No newline at end of file
diff --git a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/utils/LockFreeLinkedListTest.kt b/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/utils/LockFreeLinkedListTest.kt
similarity index 99%
rename from mirai-core/src/commonTest/kotlin/net/mamoe/mirai/utils/LockFreeLinkedListTest.kt
rename to mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/utils/LockFreeLinkedListTest.kt
index 494b8205d..2009c8d3a 100644
--- a/mirai-core/src/commonTest/kotlin/net/mamoe/mirai/utils/LockFreeLinkedListTest.kt
+++ b/mirai-core/src/jvmTest/kotlin/net/mamoe/mirai/utils/LockFreeLinkedListTest.kt
@@ -12,7 +12,6 @@
 package net.mamoe.mirai.utils
 
 import kotlinx.coroutines.*
-import net.mamoe.mirai.test.runBlocking
 import net.mamoe.mirai.test.shouldBeEqualTo
 import net.mamoe.mirai.test.shouldBeTrue
 import kotlin.test.Test