Add kotlin

Author: wu-hui

firebase-firestore/ktx/api.txt

@@ -12,6 +12,8 @@ package com.google.firebase.firestore.ktx {
     method public static inline <reified T> T getField(@NonNull com.google.firebase.firestore.DocumentSnapshot, @NonNull com.google.firebase.firestore.FieldPath fieldPath, @NonNull com.google.firebase.firestore.DocumentSnapshot.ServerTimestampBehavior serverTimestampBehavior);
     method @NonNull public static com.google.firebase.firestore.FirebaseFirestore getFirestore(@NonNull com.google.firebase.ktx.Firebase);
     method @NonNull public static com.google.firebase.firestore.MemoryCacheSettings memoryCacheSettings(@NonNull kotlin.jvm.functions.Function1<? super com.google.firebase.firestore.MemoryCacheSettings.Builder,kotlin.Unit> init);
+    method @NonNull public static com.google.firebase.firestore.MemoryEagerGcSettings memoryEagerGcSettings(@NonNull kotlin.jvm.functions.Function1<? super com.google.firebase.firestore.MemoryEagerGcSettings.Builder,kotlin.Unit> init);
+    method @NonNull public static com.google.firebase.firestore.MemoryLruGcSettings memoryLruGcSettings(@NonNull kotlin.jvm.functions.Function1<? super com.google.firebase.firestore.MemoryLruGcSettings.Builder,kotlin.Unit> init);
     method @NonNull public static com.google.firebase.firestore.PersistentCacheSettings persistentCacheSettings(@NonNull kotlin.jvm.functions.Function1<? super com.google.firebase.firestore.PersistentCacheSettings.Builder,kotlin.Unit> init);
     method @NonNull public static kotlinx.coroutines.flow.Flow<com.google.firebase.firestore.DocumentSnapshot> snapshots(@NonNull com.google.firebase.firestore.DocumentReference, @NonNull com.google.firebase.firestore.MetadataChanges metadataChanges = com.google.firebase.firestore.MetadataChanges.EXCLUDE);
     method @NonNull public static kotlinx.coroutines.flow.Flow<com.google.firebase.firestore.QuerySnapshot> snapshots(@NonNull com.google.firebase.firestore.Query, @NonNull com.google.firebase.firestore.MetadataChanges metadataChanges = com.google.firebase.firestore.MetadataChanges.EXCLUDE);

firebase-firestore/ktx/src/main/kotlin/com/google/firebase/firestore/ktx/Firestore.kt

@@ -182,6 +182,22 @@ fun memoryCacheSettings(init: MemoryCacheSettings.Builder.() -> Unit): MemoryCac
   return builder.build()
 }
 
+fun memoryEagerGcSettings(
+  init: MemoryEagerGcSettings.Builder.() -> Unit
+): MemoryEagerGcSettings {
+  val builder = MemoryEagerGcSettings.newBuilder()
+  builder.init()
+  return builder.build()
+}
+
+fun memoryLruGcSettings(
+  init: MemoryLruGcSettings.Builder.() -> Unit
+): MemoryLruGcSettings {
+  val builder = MemoryLruGcSettings.newBuilder()
+  builder.init()
+  return builder.build()
+}
+
 fun persistentCacheSettings(
   init: PersistentCacheSettings.Builder.() -> Unit
 ): PersistentCacheSettings {

firebase-firestore/ktx/src/test/kotlin/com/google/firebase/firestore/ktx/FirestoreTests.kt

@@ -124,6 +124,31 @@ class FirestoreTests : BaseTestCase() {
     assertThat(otherSettings.isSslEnabled).isEqualTo(true)
     assertThat(otherSettings.isPersistenceEnabled).isFalse()
   }
+
+  @Test
+  fun `MemoryCacheSettings Garbage Collector builder works`() {
+    val host = "http://10.0.2.2:8080"
+    val isSslEnabled = false
+
+    val settings = firestoreSettings {
+      this.host = host
+      this.isSslEnabled = isSslEnabled
+      this.setLocalCacheSettings(memoryCacheSettings {  })
+    }
+
+    assertThat(host).isEqualTo(settings.host)
+    assertThat(isSslEnabled).isEqualTo(settings.isSslEnabled)
+    assertThat(settings.isPersistenceEnabled).isFalse()
+    assertThat(settings.cacheSettings).isEqualTo(memoryCacheSettings { setGcSettings(
+      memoryEagerGcSettings {  }) })
+
+    val otherSettings = firestoreSettings { this.setLocalCacheSettings(memoryCacheSettings {setGcSettings(
+      memoryLruGcSettings { setSizeBytes(1_000) })}) }
+
+    assertThat(otherSettings.host).isEqualTo(FirebaseFirestoreSettings.DEFAULT_HOST)
+    assertThat(otherSettings.isPersistenceEnabled).isFalse()
+    assertThat(otherSettings.cacheSizeBytes).isEqualTo(1_000)
+  }
 }
 
 @RunWith(RobolectricTestRunner::class)