[pulsar] branch master updated: [improve][test] Add unit test for metadata cache #20363 (#20436)

[yubiao]

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The following commit(s) were added to refs/heads/master by this push:
     new 113d70d9299 [improve][test] Add unit test for metadata cache #20363 
(#20436)
113d70d9299 is described below

commit 113d70d9299d5bc893cee9b524c7b1623dee5892
Author: 萧易客 <km...@live.com>
AuthorDate: Tue May 30 18:46:56 2023 +0800

    [improve][test] Add unit test for metadata cache #20363 (#20436)
    
    - Add `MetadataStoreTest#testExistsDistributed` for distributed metaStore 
implementations only
    - Add `MetadataStoreTest#testGetChildrenDistributed` for distributed 
metaStore implementations only
---
 .../pulsar/metadata/BaseMetadataStoreTest.java     |  8 ++++
 .../apache/pulsar/metadata/MetadataStoreTest.java  | 52 ++++++++++++++++++++++
 2 files changed, 60 insertions(+)

diff --git 
a/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/BaseMetadataStoreTest.java
 
b/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/BaseMetadataStoreTest.java
index ec6e6e03eae..411ee038c48 100644
--- 
a/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/BaseMetadataStoreTest.java
+++ 
b/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/BaseMetadataStoreTest.java
@@ -82,6 +82,14 @@ public abstract class BaseMetadataStoreTest extends 
TestRetrySupport {
         };
     }
 
+    @DataProvider(name = "distributedImpl")
+    public Object[][] distributedImplementations() {
+        return new Object[][]{
+                {"ZooKeeper", stringSupplier(() -> zks.getConnectionString())},
+                {"Etcd", stringSupplier(() -> "etcd:" + 
getEtcdClusterConnectString())},
+        };
+    }
+
     private synchronized String getEtcdClusterConnectString() {
         if (etcdCluster == null) {
             etcdCluster = 
EtcdClusterExtension.builder().withClusterName("test").withNodes(1).withSsl(false).build()
diff --git 
a/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/MetadataStoreTest.java
 
b/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/MetadataStoreTest.java
index c87e9bda436..246661edc43 100644
--- 
a/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/MetadataStoreTest.java
+++ 
b/pulsar-metadata/src/test/java/org/apache/pulsar/metadata/MetadataStoreTest.java
@@ -663,4 +663,56 @@ public class MetadataStoreTest extends 
BaseMetadataStoreTest {
             assertTrue(e.getCause() instanceof 
MetadataStoreException.AlreadyClosedException);
         }
     }
+
+    @Test(dataProvider = "distributedImpl")
+    public void testGetChildrenDistributed(String provider, Supplier<String> 
urlSupplier) throws Exception {
+        @Cleanup
+        MetadataStore store1 = MetadataStoreFactory.create(urlSupplier.get(),
+                MetadataStoreConfig.builder().fsyncEnable(false).build());
+        @Cleanup
+        MetadataStore store2 = MetadataStoreFactory.create(urlSupplier.get(),
+                MetadataStoreConfig.builder().fsyncEnable(false).build());
+
+        String parent = newKey();
+        byte[] value = "value1".getBytes(StandardCharsets.UTF_8);
+        store1.put(parent, value, Optional.empty()).get();
+        store1.put(parent + "/a", value, Optional.empty()).get();
+        assertEquals(store1.getChildren(parent).get(), List.of("a"));
+        store1.delete(parent + "/a", Optional.empty()).get();
+        assertEquals(store1.getChildren(parent).get(), 
Collections.emptyList());
+        store1.delete(parent, Optional.empty()).get();
+        assertEquals(store1.getChildren(parent).get(), 
Collections.emptyList());
+        store2.put(parent + "/b", value, Optional.empty()).get();
+        // There is a chance watcher event is not triggered before the 
store1.getChildren() call.
+        Awaitility.await().atMost(3, TimeUnit.SECONDS)
+                .pollInterval(100, TimeUnit.MILLISECONDS)
+                .untilAsserted(() -> 
assertEquals(store1.getChildren(parent).get(), List.of("b")));
+        store2.put(parent + "/c", value, Optional.empty()).get();
+        Awaitility.await().atMost(3, TimeUnit.SECONDS)
+                .pollInterval(100, TimeUnit.MILLISECONDS)
+                .untilAsserted(() -> 
assertEquals(store1.getChildren(parent).get(), List.of("b", "c")));
+    }
+
+    @Test(dataProvider = "distributedImpl")
+    public void testExistsDistributed(String provider, Supplier<String> 
urlSupplier) throws Exception {
+        @Cleanup
+        MetadataStore store1 = MetadataStoreFactory.create(urlSupplier.get(),
+                MetadataStoreConfig.builder().fsyncEnable(false).build());
+        @Cleanup
+        MetadataStore store2 = MetadataStoreFactory.create(urlSupplier.get(),
+                MetadataStoreConfig.builder().fsyncEnable(false).build());
+
+        String parent = newKey();
+        byte[] value = "value1".getBytes(StandardCharsets.UTF_8);
+        assertFalse(store1.exists(parent).get());
+        store1.put(parent, value, Optional.empty()).get();
+        assertTrue(store1.exists(parent).get());
+        assertFalse(store1.exists(parent + "/a").get());
+        store2.put(parent + "/a", value, Optional.empty()).get();
+        assertTrue(store1.exists(parent + "/a").get());
+        // There is a chance watcher event is not triggered before the 
store1.exists() call.
+        Awaitility.await().atMost(3, TimeUnit.SECONDS)
+                .pollInterval(100, TimeUnit.MILLISECONDS)
+                .untilAsserted(() -> assertFalse(store1.exists(parent + 
"/b").get()));
+    }
 }