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package engine
import (
"context"
"testing"
)
// TestRealNamespaceDiscovery tests the real namespace discovery functionality
func TestRealNamespaceDiscovery(t *testing.T) {
engine := NewSQLEngine("localhost:8888")
// Test SHOW DATABASES with real namespace discovery
result, err := engine.ExecuteSQL(context.Background(), "SHOW DATABASES")
if err != nil {
t.Fatalf("SHOW DATABASES failed: %v", err)
}
// Should have Database column
if len(result.Columns) != 1 || result.Columns[0] != "Database" {
t.Errorf("Expected 1 column 'Database', got %v", result.Columns)
}
// With no fallback sample data, result may be empty if no real MQ cluster
t.Logf("Discovered %d namespaces (no fallback data):", len(result.Rows))
if len(result.Rows) == 0 {
t.Log(" (No namespaces found - requires real SeaweedFS MQ cluster)")
} else {
for _, row := range result.Rows {
if len(row) > 0 {
t.Logf(" - %s", row[0].ToString())
}
}
}
}
// TestRealTopicDiscovery tests the real topic discovery functionality
func TestRealTopicDiscovery(t *testing.T) {
engine := NewSQLEngine("localhost:8888")
// Test SHOW TABLES with real topic discovery (use double quotes for PostgreSQL)
result, err := engine.ExecuteSQL(context.Background(), "SHOW TABLES FROM \"default\"")
if err != nil {
t.Fatalf("SHOW TABLES failed: %v", err)
}
// Should have table name column
expectedColumn := "Tables_in_default"
if len(result.Columns) != 1 || result.Columns[0] != expectedColumn {
t.Errorf("Expected 1 column '%s', got %v", expectedColumn, result.Columns)
}
// With no fallback sample data, result may be empty if no real MQ cluster or namespace doesn't exist
t.Logf("Discovered %d topics in 'default' namespace (no fallback data):", len(result.Rows))
if len(result.Rows) == 0 {
t.Log(" (No topics found - requires real SeaweedFS MQ cluster with 'default' namespace)")
} else {
for _, row := range result.Rows {
if len(row) > 0 {
t.Logf(" - %s", row[0].ToString())
}
}
}
}
// TestNamespaceDiscoveryNoFallback tests behavior when filer is unavailable (no sample data)
func TestNamespaceDiscoveryNoFallback(t *testing.T) {
// This test demonstrates the no-fallback behavior when no real MQ cluster is running
engine := NewSQLEngine("localhost:8888")
// Get broker client to test directly
brokerClient := engine.catalog.brokerClient
if brokerClient == nil {
t.Fatal("Expected brokerClient to be initialized")
}
// Test namespace listing (should fail without real cluster)
namespaces, err := brokerClient.ListNamespaces(context.Background())
if err != nil {
t.Logf("ListNamespaces failed as expected: %v", err)
namespaces = []string{} // Set empty for the rest of the test
}
// With no fallback sample data, should return empty lists
if len(namespaces) != 0 {
t.Errorf("Expected empty namespace list with no fallback, got %v", namespaces)
}
// Test topic listing (should return empty list)
topics, err := brokerClient.ListTopics(context.Background(), "default")
if err != nil {
t.Fatalf("ListTopics failed: %v", err)
}
// Should have no fallback topics
if len(topics) != 0 {
t.Errorf("Expected empty topic list with no fallback, got %v", topics)
}
t.Log("No fallback behavior - returns empty lists when filer unavailable")
}
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