Function TestETLBatchOperations

server/etl_patterns_test.go:194–250

(t *testing.T)

}

func TestETLBatchOperations(t *testing.T) {
	// ETL tools often use batch operations
	tests := []struct {
		name           string
		query          string
		returnsResults bool
		commandType    string
	}{
		// Multi-value INSERT
		{
			name:           "batch insert",
			query:          "INSERT INTO users (id, name, email) VALUES (1, 'Alice', 'alice@example.com'), (2, 'Bob', 'bob@example.com'), (3, 'Charlie', 'charlie@example.com')",
			returnsResults: false,
			commandType:    "INSERT",
		},

		// TRUNCATE for full refresh
		{
			name:           "truncate table",
			query:          "TRUNCATE TABLE etl_destination.users",
			returnsResults: false,
			commandType:    "TRUNCATE TABLE",
		},

		// DELETE with subquery
		{
			name:           "delete with subquery",
			query:          "DELETE FROM users WHERE id IN (SELECT id FROM deleted_users)",
			returnsResults: false,
			commandType:    "DELETE",
		},

		// UPDATE with join pattern
		{
			name:           "update from staging",
			query:          "UPDATE users SET name = s.name FROM staging s WHERE users.id = s.id",
			returnsResults: false,
			commandType:    "UPDATE",
		},
	}

	c := &clientConn{}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			result := queryReturnsResults(tt.query)
			if result != tt.returnsResults {
				t.Errorf("queryReturnsResults(%q) = %v, want %v", tt.query, result, tt.returnsResults)
			}

			cmdType := c.getCommandType(tt.query)
			if cmdType != tt.commandType {
				t.Errorf("getCommandType(%q) = %q, want %q", tt.query, cmdType, tt.commandType)
			}
		})
	}
}