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C#

C# static code analysis

Unique rules to find Bugs, Vulnerabilities, Security Hotspots, and Code Smells in your C# code

  • All rules 493
  • Vulnerability46
  • Bug88
  • Security Hotspot24
  • Code Smell335

  • Quick Fix 61
Filtered: 14 rules found
bad-practice
    Impact
      Clean code attribute
        1. "ExcludeFromCodeCoverage" attributes should include a justification

           Code Smell
        2. Client instances should not be recreated on each Azure Function invocation

           Code Smell
        3. Azure Functions should be stateless

           Code Smell
        4. "is" should not be used with "this"

           Code Smell
        5. "Thread.Sleep" should not be used in tests

           Code Smell
        6. "nameof" should be used

           Code Smell
        7. Formatting SQL queries is security-sensitive

           Security Hotspot
        8. Loops with at most one iteration should be refactored

           Bug
        9. Tests should not be ignored

           Code Smell
        10. "switch" statements should have at least 3 "case" clauses

           Code Smell
        11. "GC.Collect" should not be called

           Code Smell
        12. Nested code blocks should not be used

           Code Smell
        13. "Obsolete" attributes should include explanations

           Code Smell
        14. Standard outputs should not be used directly to log anything

           Code Smell

        Tests should not be ignored

        adaptability - tested
        maintainability
        Code Smell
        • tests
        • bad-practice
        • confusing

        Why is this an issue?

        When a test fails due, for example, to infrastructure issues, you might want to ignore it temporarily. But without some kind of notation about why the test is being ignored, it may never be reactivated. Such tests are difficult to address without comprehensive knowledge of the project, and end up polluting their projects.

        This rule raises an issue for each ignored test that does not have a WorkItem attribute nor a comment about why it is being skipped on the right side of the Ignore attribute.

        Noncompliant code example

        [TestMethod]
        [Ignore]
        public void Test_DoTheThing()
        {
          // ...
        }
        

        Compliant solution

        [TestMethod]
        [Ignore]  // renable when TCKT-1234 is fixed
        public void Test_DoTheThing()
        {
          // ...
        }
        

        or

        [TestMethod]
        [Ignore]
        [WorkItem(1234)]
        public void Test_DoTheThing()
        {
          // ...
        }
        

        Exceptions

        The rule doesn’t raise an issue if:

        • the test method is also marked with WorkItem attribute
        • there is a comment on the right side of the Ignore attribute
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          on-premise CI
          Available Since
          9.1
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          Developer Edition
          Available Since
          9.1

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