diff --git a/src/test/kotlin/ktee/KTeeTest.kt b/src/test/kotlin/ktee/KTeeTest.kt
index 5502a0b..b9d47d0 100644
--- a/src/test/kotlin/ktee/KTeeTest.kt
+++ b/src/test/kotlin/ktee/KTeeTest.kt
@@ -4,7 +4,6 @@ import org.slf4j.Logger
 import org.slf4j.LoggerFactory
 import kotlin.test.Test
 import kotlin.test.assertEquals
-import kotlin.test.assertFailsWith
 import kotlin.test.assertTrue
 
 class KTeeTest {
@@ -65,60 +64,4 @@ class KTeeTest {
         outputs.forEach { assertTrue { it.endsWith("hello myval" + System.lineSeparator()) } }
     }
 
-    @Test
-    fun `should throw IllegalStateException`() {
-        assertFailsWith<IllegalStateException> {
-            KTee.debug = false; KTee.debug = false }
-    }
-
-    @Test
-    fun `should not write to stdout`() {
-        if (!KTee.debugChanged) KTee.debug = false
-        assertEquals("", trapOut { "myval".tee() })
-    }
-
-    @Test
-    fun `should not evaluate lambda or write to stdout`() {
-        if (!KTee.debugChanged) KTee.debug = false
-        assertEquals("", trapOut { "myval".tee { v -> "value is $v" } })
-    }
-
-    @Test
-    fun `should not write to logger`() {
-        if (!KTee.debugChanged) KTee.debug = false
-        assertTrue(trapErr { "myval".teeToInfo(logger) } == "")
-    }
-
-    @Test
-    fun `should not log with info level`() {
-        if (!KTee.debugChanged) KTee.debug = false
-        val outputs = listOf(
-                trapErr { "myval".teeToInfo(logger, "hello {}") },
-                trapErr { "myval".teeToInfo(logger) { "hello $it" } },
-                trapErr { "myval".teeToInfo(logger) { "hello {}" } }
-        )
-        outputs.forEach { assertTrue { !it.contains("INFO") } }
-    }
-
-    @Test
-    fun `should not log with trace level`() {
-        if (!KTee.debugChanged) KTee.debug = false
-        val outputs = listOf(
-                trapErr { "myval".teeToTrace(logger, "hello {}") },
-                trapErr { "myval".teeToTrace(logger) { "hello $it" } },
-                trapErr { "myval".teeToTrace(logger) { "hello {}" } }
-        )
-        outputs.forEach { assertTrue { it == "" } }
-    }
-
-    @Test
-    fun `should not log with debug level`() {
-        if (!KTee.debugChanged) KTee.debug = false
-        val outputs = listOf(
-                trapErr { "myval".teeToDebug(logger, "hello {}") },
-                trapErr { "myval".teeToDebug(logger) { "hello $it" } },
-                trapErr { "myval".teeToDebug(logger) { "hello {}" } }
-        )
-        outputs.forEach { assertTrue { !it.contains("DEBUG") } }
-    }
 }