---
title: Detects if `m.Run()` was actually called in `TestMain`
description: Datadog, the leading service for cloud-scale monitoring.
breadcrumbs: >-
  Docs > Datadog Security > Code Security > Static Code Analysis (SAST) > SAST
  Rules > Detects if `m.Run()` was actually called in `TestMain`
---

# Detects if `m.Run()` was actually called in `TestMain`

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## Metadata{% #metadata %}

**ID:** `go-best-practices/missing-run-in-test`

**Language:** Go

**Severity:** Error

**Category:** Error Prone

## Description{% #description %}

No description found

## Non-Compliant Code Examples{% #non-compliant-code-examples %}

```go
package example

import (
    "os"
    "testing"
)

func TestMain(m *testing.M) {
    // Setup code
    doSetup()

    // Missing call to Run() here!
}
```

## Compliant Code Examples{% #compliant-code-examples %}

```go
// GOOD: Correct implementation with m.Run()
package example

import (
    "os"
    "testing"
)

func TestMain(m *testing.M) {
    // Setup code
    doSetup()

    // Run the tests
    code := m.Run()
	
	os.Exit(code)
}
```
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