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Testing Canal Admin Connector Operations in alibaba/canal

This test suite validates the functionality of the SimpleAdminConnector class in Alibaba Canal’s admin module, focusing on connection management and instance operations. It examines the connector’s ability to handle administrative tasks like starting, stopping, and monitoring Canal instances.

Test Coverage Overview

The test coverage encompasses essential administrative operations of the Canal connector:

Connection lifecycle management (connect/disconnect)
Instance status verification and control
Log file operations and retrieval
Runtime state management for Canal instances

The suite verifies both global operations and instance-specific commands, ensuring comprehensive functionality testing.

Implementation Analysis

The testing approach utilizes a sequential verification pattern, systematically testing connector operations in real-world scenarios.

Implements connection testing with localhost setup
Validates state transitions for Canal instances
Verifies log management capabilities
Tests both global and instance-specific operations

Technical Details

Testing infrastructure includes:

JUnit framework for test execution
SimpleAdminConnector implementation with localhost configuration
Default admin credentials (admin/admin)
Port 11110 for connector communication
Example instance configuration for specific tests

Best Practices Demonstrated

The test suite exemplifies several testing best practices:

Systematic state verification before and after operations
Complete connection lifecycle management
Comprehensive instance management testing
Sequential operation validation
Clear test organization with distinct operational phases

alibaba/canal

admin/admin-web/src/test/java/com/alibaba/otter/canal/admin/SimpleAdminConnectorTest.java

            
package com.alibaba.otter.canal.admin;

import org.junit.Ignore;
import org.junit.Test;

import com.alibaba.otter.canal.admin.connector.SimpleAdminConnector;

@Ignore
public class SimpleAdminConnectorTest {

    @Test
    public void testSimple() {
        SimpleAdminConnector connector = new SimpleAdminConnector("127.0.0.1", 11110, "admin", "admin");
        connector.connect();
        System.out.println("check 1 : " + connector.check());
        System.out.println("getRunning Before stop 1 : " + connector.getRunningInstances());
        System.out.println("stop 1: " + connector.stop());
        System.out.println("getRunning After stop 1 : " + connector.getRunningInstances());
        System.out.println("check 1 : " + connector.check());
        System.out.println("listFile 1 : " + connector.listCanalLog());
        System.out.println("getFile 1 : " + connector.canalLog(10));
        connector.disconnect();

        connector.connect();
        System.out.println("check 2 : " + connector.check());
        System.out.println("get Running Before start : " + connector.getRunningInstances());
        System.out.println("start 2 : " + connector.start());
        System.out.println("get Running After start : " + connector.getRunningInstances());
        System.out.println("check 2 : " + connector.check());
        System.out.println("check after before example 2 : " + connector.checkInstance("example"));
        System.out.println("stop example 2 : " + connector.stopInstance("example"));
        System.out.println("check example 2 : " + connector.checkInstance("example"));
        System.out.println("start example 2 : " + connector.startInstance("example"));
        System.out.println("check after start example 2 : " + connector.checkInstance("example"));
        System.out.println("listFile 2 : " + connector.listCanalLog());
        System.out.println("getFile 2 : " + connector.canalLog(10));

        System.out.println("listFile 3 : " + connector.listInstanceLog("example"));
        System.out.println("getFile 3 : " + connector.instanceLog("example", "example.log", 10));
        connector.disconnect();
    }
}