Add RisingWave catalog tests (#8308)

* Add RisingWave catalog tests for S3 tables

* Add RisingWave catalog integration tests to CI workflow

* Refactor RisingWave catalog tests based on PR feedback

* Address PR feedback: optimize checks, cleanup logs

* fix tests

* consistent

test/s3tables/catalog_risingwave/risingwave_catalog_test.go

@@ -0,0 +1,79 @@
+package catalog_risingwave
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+)
+
+func TestRisingWaveIcebergCatalog(t *testing.T) {
+	if testing.Short() {
+		t.Skip("Skipping integration test in short mode")
+	}
+
+	env := NewTestEnvironment(t)
+	defer env.Cleanup(t)
+
+	if !env.dockerAvailable {
+		t.Skip("Docker not available, skipping RisingWave integration test")
+	}
+
+	t.Log(">>> Starting SeaweedFS...")
+	env.StartSeaweedFS(t)
+	t.Log(">>> SeaweedFS started.")
+
+	tableBucket := "iceberg-tables"
+	t.Logf(">>> Creating table bucket: %s", tableBucket)
+	createTableBucket(t, env, tableBucket)
+
+	t.Log(">>> Starting RisingWave...")
+	env.StartRisingWave(t)
+	t.Log(">>> RisingWave started.")
+
+	// Create Iceberg namespace
+	createIcebergNamespace(t, env, "default")
+
+	// Create a catalog in RisingWave that points to SeaweedFS Iceberg REST API
+	icebergUri := env.dockerIcebergEndpoint()
+	s3Endpoint := env.dockerS3Endpoint()
+
+	tableName := "test_table_" + randomString(6)
+	createIcebergTable(t, env, tableBucket, "default", tableName)
+
+	sourceName := "test_source_" + randomString(6)
+	createSourceSql := fmt.Sprintf(`
+CREATE SOURCE %s WITH (
+    connector = 'iceberg',
+    catalog.type = 'rest',
+    catalog.uri = '%s',
+    catalog.name = 'default',
+    database.name = 'default',
+    table.name = '%s',
+    warehouse.path = 's3://%s',
+    s3.endpoint = '%s',
+    s3.region = 'us-east-1',
+    s3.access.key = '%s',
+    s3.secret.key = '%s',
+    s3.path.style.access = 'true',
+    catalog.rest.sigv4_enabled = 'true',
+    catalog.rest.signing_region = 'us-east-1',
+    catalog.rest.signing_name = 's3'
+);`, sourceName, icebergUri, tableName, tableBucket, s3Endpoint, env.accessKey, env.secretKey)
+
+	t.Logf(">>> Creating source %s...", sourceName)
+	runRisingWaveSQL(t, env.postgresSidecar, createSourceSql)
+
+	showSourcesOutput := runRisingWaveSQL(t, env.postgresSidecar, "SHOW SOURCES;")
+	if !strings.Contains(showSourcesOutput, sourceName) {
+		t.Fatalf("Expected source %s in SHOW SOURCES output:\n%s", sourceName, showSourcesOutput)
+	}
+
+	describeOutput := runRisingWaveSQL(t, env.postgresSidecar, fmt.Sprintf("DESCRIBE %s;", sourceName))
+	if !strings.Contains(describeOutput, "id") || !strings.Contains(describeOutput, "name") {
+		t.Fatalf("Expected id/name columns in DESCRIBE output:\n%s", describeOutput)
+	}
+
+	runRisingWaveSQL(t, env.postgresSidecar, fmt.Sprintf("SELECT * FROM %s LIMIT 0;", sourceName))
+
+	t.Log(">>> RisingWave Iceberg Catalog test passed!")
+}