### Run Unit Tests

Source: https://github.com/aliyun/aliyun-log-go-sdk/blob/master/TESTING.md

Execute all unit tests for the project. No environment variables are required as HTTP traffic is mocked.

```bash
go test ./...
```

--------------------------------

### Set Up Environment Variables for E2E Tests

Source: https://github.com/aliyun/aliyun-log-go-sdk/blob/master/TESTING.md

Configure necessary environment variables for running end-to-end tests. These variables provide credentials and endpoint information for Alibaba Cloud SLS.

```bash
export LOG_TEST_ENDPOINT=cn-hangzhou.log.aliyuncs.com
export LOG_TEST_ACCESS_KEY_ID=...
export LOG_TEST_ACCESS_KEY_SECRET=...
export LOG_TEST_PROJECT=my-test-project
export LOG_TEST_LOGSTORE=my-test-logstore
# Optional, depending on which suites you run:
export LOG_TEST_REGION=cn-hangzhou
export LOG_TEST_ROLE_ARN=acs:ram::...
export LOG_TEST_CMK_ID=...
export LOG_TEST_CMK_ENDPOINT=...
export LOG_TEST_METRIC_STORE_NAME=...
export LOG_TEST_STORE_VIEW_PROJECT=...
```

--------------------------------

### Build Mocked Client for Unit Tests

Source: https://github.com/aliyun/aliyun-log-go-sdk/blob/master/TESTING.md

Create a mocked HTTP transport and client for unit tests. This allows testing HTTP interactions without making actual network calls. Use RegisterJSON or RegisterError to stub responses.

```go
import (
    "github.com/aliyun/aliyun-log-go-sdk/internal/testutil"
    "github.com/aliyun/aliyun-log-go-sdk/internal/testutil/clienthelper"
)

transport := testutil.NewMockTransport()
testutil.RegisterJSON(t, transport, "POST", `=~^https://.+\.example\.com/logstores/.+/shards/lb$`,
    200, map[string]any{},
    nil)

client := clienthelper.NewMockedClient(transport)
// ... call client.PutLogs / GetLogs / etc.
```

--------------------------------

### Run E2E Tests

Source: https://github.com/aliyun/aliyun-log-go-sdk/blob/master/TESTING.md

Execute end-to-end tests after setting the required environment variables. Build with the 'e2e' tag.

```bash
go test -tags=e2e ./...
```

--------------------------------

### Skip E2E Tests if Endpoint Not Configured

Source: https://github.com/aliyun/aliyun-log-go-sdk/blob/master/TESTING.md

Conditionally skip E2E tests if the necessary LOG_TEST_* environment variables are not set. The testutil.RequireE2E function handles this by calling t.Skip.

```go
func TestSomethingE2E(t *testing.T) {
    cfg := testutil.RequireE2E(t)  // skips if LOG_TEST_* env is empty
    client := sls.CreateNormalInterface(cfg.Endpoint, cfg.AccessKeyID, cfg.AccessKeySecret, "")
    // ...
}
```

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