diff --git a/sample/build.gradle.kts b/sample/build.gradle.kts
index 7d95a28c4ed..b366bbe7f47 100644
--- a/sample/build.gradle.kts
+++ b/sample/build.gradle.kts
@@ -57,5 +57,5 @@ kotlin {
 }
 
 configure<com.bnorm.power.PowerAssertGradleExtension> {
-  functions = listOf("kotlin.test.assertTrue", "kotlin.require")
+  functions = listOf("kotlin.assert", "kotlin.test.assertTrue", "kotlin.require")
 }
diff --git a/sample/src/jsTest/kotlin/com/bnorm/power/JsPowerAssertTest.kt b/sample/src/jsTest/kotlin/com/bnorm/power/JsPowerAssertTest.kt
new file mode 100644
index 00000000000..111d332d15c
--- /dev/null
+++ b/sample/src/jsTest/kotlin/com/bnorm/power/JsPowerAssertTest.kt
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2020 Brian Norman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.bnorm.power
+
+import kotlin.test.Test
+
+class JsPowerAssertTest {
+  @Test
+  fun assert() {
+    require(Person.UNKNOWN.size == 1) { "unknown persons: ${Person.UNKNOWN}" }
+  }
+}
diff --git a/sample/src/jvmTest/kotlin/com/bnorm/power/JvmPowerAssertTest.kt b/sample/src/jvmTest/kotlin/com/bnorm/power/JvmPowerAssertTest.kt
index 233d3de951a..2a0f2071f28 100644
--- a/sample/src/jvmTest/kotlin/com/bnorm/power/JvmPowerAssertTest.kt
+++ b/sample/src/jvmTest/kotlin/com/bnorm/power/JvmPowerAssertTest.kt
@@ -21,6 +21,6 @@ import kotlin.test.Test
 class JvmPowerAssertTest {
   @Test
   fun assert() {
-    assert(Person.UNKNOWN.size == 1)
+    assert(Person.UNKNOWN.size == 1) { "unknown persons: ${Person.UNKNOWN}" }
   }
 }
diff --git a/sample/src/nativeTest/kotlin/com/bnorm/power/NativePowerAssertTest.kt b/sample/src/nativeTest/kotlin/com/bnorm/power/NativePowerAssertTest.kt
new file mode 100644
index 00000000000..267dcbb0fd0
--- /dev/null
+++ b/sample/src/nativeTest/kotlin/com/bnorm/power/NativePowerAssertTest.kt
@@ -0,0 +1,26 @@
+/*
+ * Copyright (C) 2020 Brian Norman
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.bnorm.power
+
+import kotlin.test.Test
+
+class NativePowerAssertTest {
+  @Test
+  fun assert() {
+    assert(Person.UNKNOWN.size == 1) { "unknown persons: ${Person.UNKNOWN}" }
+  }
+}