#430: Add pwd

Author: DmitryNekrasov

core/linux/test/TimeZoneNativeTest.kt

@@ -5,19 +5,42 @@
 
 package kotlinx.datetime.test
 
+import kotlinx.cinterop.ByteVar
+import kotlinx.cinterop.ExperimentalForeignApi
+import kotlinx.cinterop.UnsafeNumber
+import kotlinx.cinterop.allocArray
+import kotlinx.cinterop.convert
+import kotlinx.cinterop.memScoped
+import kotlinx.cinterop.toKString
 import kotlinx.datetime.TimeZone
 import kotlinx.datetime.internal.root
 import kotlin.test.Test
 import kotlin.test.assertEquals
+import platform.posix.*
 
 class TimeZoneNativeTest {
 
+    @OptIn(ExperimentalForeignApi::class, UnsafeNumber::class)
+    private fun pwd(): String {
+        val PATH_MAX = 4096
+        return memScoped {
+            val buffer = allocArray<ByteVar>(PATH_MAX)
+            if (getcwd(buffer, PATH_MAX.convert()) != null) {
+                buffer.toKString()
+            } else {
+                throw Exception("Failed to get current directory: ${strerror(errno)?.toKString()}")
+            }
+        }
+    }
+
     @Test
     fun correctSymlinkTest() {
         root = "./core/linux/test/time-zone-native-test-resources/correct-symlink/"
 
+        println("PWD: ${pwd()}")
+
         val tz = TimeZone.currentSystemDefault()
-        assertEquals(TimeZone.of("Europe/Oslo"), tz)
+        assertEquals(TimeZone.of("Europe/Oslo"), tz, "PWD: ${pwd()}")
     }
 
     @Test