#430: Check INSIDE_TESTCONTAINERS env var to run test only in testcontainer

Author: DmitryNekrasov

core/jvm/test/testcontainers/modified/Dockerfile

@@ -2,6 +2,8 @@ FROM --platform=linux/arm64 ubuntu:24.04
 
 RUN apt-get update && apt-get install -y tzdata
 
+ENV INSIDE_TESTCONTAINERS=true
+
 # 4: Arctic/Longyearbyen
 RUN echo 4 | dpkg-reconfigure tzdata
 

core/jvm/test/testcontainers/original/Dockerfile

@@ -2,6 +2,8 @@ FROM --platform=linux/arm64 ubuntu:24.04
 
 RUN apt-get update && apt-get install -y tzdata
 
+ENV INSIDE_TESTCONTAINERS=true
+
 # 4: Arctic/Longyearbyen
 RUN echo 4 | dpkg-reconfigure tzdata
 

core/linux/test/TimeZoneLinuxNativeTest.kt

@@ -5,14 +5,28 @@
 
 package kotlinx.datetime.test
 
+import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.toKString
 import kotlinx.datetime.*
 import kotlin.test.*
+import platform.posix.getenv
 
 class TimeZoneLinuxNativeTest {
+
+    private var shouldRunTests = false
+
+    @OptIn(ExperimentalForeignApi::class)
+    @BeforeTest
+    fun setup() {
+        shouldRunTests = getenv("INSIDE_TESTCONTAINERS")?.toKString() != null
+    }
+
     @Test
     fun defaultTimeZoneTest() {
+        if (!shouldRunTests) return
+
         val tz = TimeZone.currentSystemDefault()
-        println("LINUX TIMEZONE: $tz")
+        println("TIMEZONE: $tz")
         assertEquals(TimeZone.of("Europe/Oslo"), tz)
     }
 }