test task extension

{
    // Some sample Theia tasks
    "tasks": [
        {
            "label": "[Task] short running test task (~3s)",
            "type": "shell",
            "cwd": "${workspaceFolder}/packages/task/src/node/test-resources/",
            "command": "./task",
            "args": [
                "1",
                "2",
                "3"
            ],
            "windows": {
                "command": "cmd.exe",
                "args": [
                    "/c",
                    "task.bat",
                    "abc"
                ]
            }
        },
        {
            "label": "[Task] long running test task (~300s)",
            "type": "shell",
            "cwd": "${workspaceFolder}/packages/task/src/node/test-resources/",
            "command": "./task-long-running",
            "args": [],
            "windows": {
                "command": "cmd.exe",
                "args": [
                    "/c",
                    "task-long-running.bat"
                ]
            }
        },
        {
            "label": "[Task] recursively list files from workspace root",
            "type": "shell",
            "cwd": "${workspaceFolder}",
            "command": "ls",
            "args": [
                "-alR"
            ],
            "windows": {
                "command": "cmd.exe",
                "args": [
                    "/c",
                    "dir",
                    "/s"
                ]
            }
        },
        {
            "label": "che",
            "type": "che",
            "command": "echo hello"
        }
    ]
}