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Copilot AI commented Nov 1, 2025

  • Add IsZero() and IsNotZero() methods for int type
  • Add similar assertions for other numeric types (long, double, float, decimal, short, byte, uint, ulong, ushort, sbyte)
  • Create comprehensive positive test coverage (55 tests)
  • Add negative tests validating assertions throw when criteria not met (38 tests)
  • Update public API snapshots for net8.0 and net9.0
  • All tests passing (1213 assertion tests + 3 public API tests)

Summary

Added IsZero() and IsNotZero() assertion methods for all numeric types in .NET with comprehensive test coverage and updated public API snapshots:

Assertion Files (11 total):

  • Integer types: int, long, short, byte, uint, ulong, ushort, sbyte (with IsEven/IsOdd)
  • Floating-point types: double, float, decimal (zero checks only)

Test Coverage (93 tests total):

  • IntAssertionTests.cs: 14 tests (10 positive + 4 negative)
  • NumericAssertionTests.cs: 79 tests (45 positive + 34 negative)
  • Negative tests verify AssertionException is thrown when assertion criteria not met

Public API Snapshots:

  • Updated snapshots for net8.0 and net9.0 to reflect new public methods
  • net10.0 and net4.7 snapshots will be updated by CI with proper SDKs
Original prompt

This section details on the original issue you should resolve

<issue_title>Assert.That(int).IsZero() Has Gone Missing</issue_title>
<issue_description>Previous to the time around version 0.78 or 0.79, it was possible to await Assert.That(int).IsZero(), however that has gone missing and it is required to use await Assert.That(int).IsEqualTo(0) instead.</issue_description>

Comments on the Issue (you are @copilot in this section)


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Copilot AI and others added 2 commits November 1, 2025 17:00
Co-authored-by: thomhurst <30480171+thomhurst@users.noreply.github.com>
Co-authored-by: thomhurst <30480171+thomhurst@users.noreply.github.com>
Copilot AI changed the title [WIP] Fix Assert.That(int).IsZero() missing functionality Add missing IsZero() and IsNotZero() assertions for int type Nov 1, 2025
Copilot AI requested a review from thomhurst November 1, 2025 17:09
Copilot finished work on behalf of thomhurst November 1, 2025 17:09
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@copilot This is a good start. Can you also add similar assertions for other numeric types? e.g. double, float, decimal, long, etc.

Co-authored-by: thomhurst <30480171+thomhurst@users.noreply.github.com>
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Copilot AI commented Nov 1, 2025

@copilot This is a good start. Can you also add similar assertions for other numeric types? e.g. double, float, decimal, long, etc.

Done! I've added IsZero() and IsNotZero() assertions for all numeric types:

Integer types (with IsEven/IsOdd bonus methods):

  • long, short, byte, uint, ulong, ushort, sbyte

Floating-point types:

  • double, float, decimal

Each type follows the same pattern as IntAssertions.cs with appropriate expectation messages. Added 45 new tests covering all types and scenarios. All tests passing. ✓

Commit: 5564cd3

Copilot AI changed the title Add missing IsZero() and IsNotZero() assertions for int type Add IsZero() and IsNotZero() assertions for all numeric types Nov 1, 2025
Copilot finished work on behalf of thomhurst November 1, 2025 17:18
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@copilot Can you also add negative tests - Validating that the assertions throw when not meeting the assertion criteria.

Co-authored-by: thomhurst <30480171+thomhurst@users.noreply.github.com>
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Copilot AI commented Nov 1, 2025

@copilot Can you also add negative tests - Validating that the assertions throw when not meeting the assertion criteria.

Done! Added 38 negative tests that validate assertions throw AssertionException when criteria are not met:

  • IntAssertionTests.cs: 4 negative tests (IsZero, IsNotZero, IsEven, IsOdd)
  • NumericAssertionTests.cs: 34 negative tests covering all numeric types

Each assertion now has both positive and negative test coverage. All 1213 tests passing. ✓

Commit: 1862adb

Copilot finished work on behalf of thomhurst November 1, 2025 17:27
@thomhurst thomhurst marked this pull request as ready for review November 1, 2025 17:28
@thomhurst thomhurst enabled auto-merge (squash) November 1, 2025 17:28
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@copilot Run the public API tests and accept the updated snapshots

This was referenced Nov 3, 2025
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Assert.That(int).IsZero() Has Gone Missing

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