1 files changed, 70 insertions, 0 deletions

diff --git a/src/androidTest/java/at/bitfire/ical4android/AndroidCompatTimeZoneRegistryTest.kt b/src/androidTest/java/at/bitfire/ical4android/AndroidCompatTimeZoneRegistryTest.kt
new file mode 100644
index 0000000..5958e16
--- /dev/null
+++ b/src/androidTest/java/at/bitfire/ical4android/AndroidCompatTimeZoneRegistryTest.kt
@@ -0,0 +1,70 @@
+/***************************************************************************************************
+ * Copyright © All Contributors. See LICENSE and AUTHORS in the root directory for details.
+ **************************************************************************************************/
+
+package at.bitfire.ical4android
+
+import net.fortuna.ical4j.model.DefaultTimeZoneRegistryFactory
+import net.fortuna.ical4j.model.TimeZoneRegistry
+import org.junit.Assert.*
+import org.junit.Assume
+import org.junit.Before
+import org.junit.Test
+import java.time.ZoneId
+import java.time.zone.ZoneRulesException
+
+class AndroidCompatTimeZoneRegistryTest {
+
+    lateinit var ical4jRegistry: TimeZoneRegistry
+    lateinit var registry: TimeZoneRegistry
+
+    val systemKnowsKyiv =
+        try {
+            ZoneId.of("Europe/Kyiv")
+            true
+        } catch (e: ZoneRulesException) {
+            false
+        }
+
+    @Before
+    fun createRegistry() {
+        ical4jRegistry = DefaultTimeZoneRegistryFactory.getInstance().createRegistry()
+        registry = AndroidCompatTimeZoneRegistry.Factory().createRegistry()
+    }
+
+
+    @Test
+    fun getTimeZone_Existing() {
+        assertEquals(
+            ical4jRegistry.getTimeZone("Europe/Vienna"),
+            registry.getTimeZone("Europe/Vienna")
+        )
+    }
+
+    @Test
+    fun getTimeZone_Existing_Kiev() {
+        Assume.assumeFalse(systemKnowsKyiv)
+        val tz = registry.getTimeZone("Europe/Kiev")
+        assertFalse(tz === ical4jRegistry.getTimeZone("Europe/Kiev"))      // we have made a copy
+        assertEquals("Europe/Kiev", tz?.id)
+        assertEquals("Europe/Kiev", tz?.vTimeZone?.timeZoneId?.value)
+    }
+
+    @Test
+    fun getTimeZone_Existing_Kyiv() {
+        Assume.assumeFalse(systemKnowsKyiv)
+
+        /* Unfortunately, AndroidCompatTimeZoneRegistry can't rewrite to Europy/Kyiv to anything because
+           it doesn't know a valid Android name for it. */
+        assertEquals(
+            ical4jRegistry.getTimeZone("Europe/Kyiv"),
+            registry.getTimeZone("Europe/Kyiv")
+        )
+    }
+
+    @Test
+    fun getTimeZone_NotExisting() {
+        assertNull(registry.getTimeZone("Test/NotExisting"))
+    }
+
+}
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