Add integration test for host metadata resolution

databricks-sdk-java/src/main/java/com/databricks/sdk/core/DatabricksConfig.java

@@ -240,7 +240,7 @@ private void tryResolveHostMetadata() {
     }
     try {
       resolveHostMetadata();
-    } catch (Exception e) {
+    } catch (Throwable e) {
       LOG.debug("Failed to resolve host metadata: {}", e.getMessage());
     }
   }

databricks-sdk-java/src/test/java/com/databricks/sdk/core/oauth/ExternalBrowserCredentialsProviderTest.java

@@ -34,8 +34,14 @@ void clientAndConsentTest() throws IOException {
                 "{\"token_endpoint\": \"tokenEndPointFromServer\", \"authorization_endpoint\": \"authEndPointFromServer\"}",
                 200)
             .build();
+    FixtureServer.FixtureMapping wellKnownFixture =
+        new FixtureServer.FixtureMapping.Builder()
+            .validateMethod("GET")
+            .validatePath("/.well-known/databricks-config")
+            .withResponse("{}", 404)
+            .build();
     try (FixtureServer fixtures = new FixtureServer()) {
-      fixtures.with(fixture).with(fixture);
+      fixtures.with(wellKnownFixture).with(fixture).with(fixture);
       DatabricksConfig config =
           new DatabricksConfig()
               .setAuthType("external-browser")
@@ -81,8 +87,14 @@ void clientAndConsentTestWithCustomRedirectUrl() throws IOException {
                 "{\"token_endpoint\": \"tokenEndPointFromServer\", \"authorization_endpoint\": \"authEndPointFromServer\"}",
                 200)
             .build();
+    FixtureServer.FixtureMapping wellKnownFixture =
+        new FixtureServer.FixtureMapping.Builder()
+            .validateMethod("GET")
+            .validatePath("/.well-known/databricks-config")
+            .withResponse("{}", 404)
+            .build();
     try (FixtureServer fixtures = new FixtureServer()) {
-      fixtures.with(fixture).with(fixture);
+      fixtures.with(wellKnownFixture).with(fixture).with(fixture);
       DatabricksConfig config =
           new DatabricksConfig()
               .setAuthType("external-browser")
@@ -126,9 +138,7 @@ void openIDConnectEndPointsTestAccounts() throws IOException {
         new DatabricksConfig()
             .setAuthType("external-browser")
             .setHost("https://accounts.cloud.databricks.com")
-            .setHttpClient(new CommonsHttpClient.Builder().withTimeoutSeconds(30).build())
             .setAccountId("testAccountId");
-    config.resolve();
 
     String prefix = "https://accounts.cloud.databricks.com/oidc/accounts/" + config.getAccountId();
     assertEquals(prefix + "/v1/token", config.getDatabricksOidcEndpoints().getTokenEndpoint());

databricks-sdk-java/src/test/java/com/databricks/sdk/integration/HostMetadataIT.java

@@ -0,0 +1,41 @@
+package com.databricks.sdk.integration;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+import com.databricks.sdk.core.DatabricksConfig;
+import com.databricks.sdk.integration.framework.EnvContext;
+import com.databricks.sdk.integration.framework.EnvOrSkip;
+import com.databricks.sdk.integration.framework.EnvTest;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Integration test for host metadata resolution via /.well-known/databricks-config. Port of Go SDK
+ * #1546.
+ */
+@ExtendWith(EnvTest.class)
+@EnvContext("ucws")
+public class HostMetadataIT {
+  private static final Logger LOG = LoggerFactory.getLogger(HostMetadataIT.class);
+
+  @Test
+  void testResolvePopulatesFieldsFromMetadata(@EnvOrSkip("DATABRICKS_HOST") String host) {
+    DatabricksConfig config = new DatabricksConfig().setHost(host);
+    config.resolve();
+
+    LOG.info(
+        "Resolved metadata for {}: accountId={}, workspaceId={}, discoveryUrl={}",
+        host,
+        config.getAccountId(),
+        config.getWorkspaceId(),
+        config.getDiscoveryUrl());
+
+    // After resolve(), host metadata should have been resolved
+    assertNotNull(config.getDiscoveryUrl(), "Expected discoveryUrl to be populated after resolve");
+    assertFalse(config.getDiscoveryUrl().isEmpty(), "Expected non-empty discoveryUrl");
+    assertNotNull(config.getAccountId(), "Expected accountId to be populated after resolve");
+    assertFalse(config.getAccountId().isEmpty(), "Expected non-empty accountId");
+  }
+}