feat: add WithoutMessage for delegate assertions

[vbreuss]

This PR adds new WithoutMessage methods for delegate assertions, providing the ability to verify that thrown exceptions do not have specific messages or message content. The feature enhances the exception assertion API by providing negative assertions for message validation.

Key changes:

• Added DoesNotHaveMessage and DoesNotHaveMessageContaining methods for exception assertions
• Added WithoutMessage and WithoutMessageContaining methods for delegate exception assertions
• Updated error message formatting to be more consistent and include contextual information

[Copilot]

Pull Request Overview

This PR adds new WithoutMessage methods for delegate assertions, providing the ability to verify that thrown exceptions do not have specific messages or message content. The feature enhances the exception assertion API by providing negative assertions for message validation.

Key changes:

• Added DoesNotHaveMessage and DoesNotHaveMessageContaining methods for exception assertions
• Added WithoutMessage and WithoutMessageContaining methods for delegate exception assertions
• Updated error message formatting to be more consistent and include contextual information

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
Source/aweXpect/That/Exceptions/ThatException.HasMessage.cs	Added DoesNotHaveMessage method and updated constraint implementation
Source/aweXpect/That/Exceptions/ThatException.HasMessageContaining.cs	Added DoesNotHaveMessageContaining method and updated constraint implementation
Source/aweXpect/That/Delegates/ThatDelegateThrows.WithMessage.cs	Added WithoutMessage method for delegate assertions
Source/aweXpect/That/Delegates/ThatDelegateThrows.WithMessageContaining.cs	Added WithoutMessageContaining method for delegate assertions
Tests/aweXpect.Tests/Exceptions/ThatException.DoesNotHaveMessage.Tests.cs	Comprehensive test coverage for new DoesNotHaveMessage functionality
Tests/aweXpect.Tests/Exceptions/ThatException.DoesNotHaveMessageContaining.Tests.cs	Comprehensive test coverage for new DoesNotHaveMessageContaining functionality
Tests/aweXpect.Tests/Delegates/ThatDelegate.ThrowsException.WithoutMessage.Tests.cs	Test coverage for delegate WithoutMessage method
Tests/aweXpect.Tests/Delegates/ThatDelegate.ThrowsException.WithoutMessageContaining.Tests.cs	Test coverage for delegate WithoutMessageContaining method
Docs/pages/docs/expectations/06-delegates.md	Updated documentation with examples of new methods
Multiple test files	Updated expected error messages to include additional context information

[github-actions]

🚀 Benchmark Results

Details

BenchmarkDotNet v0.14.0, Ubuntu 24.04.3 LTS (Noble Numbat)

AMD EPYC 7763, 1 CPU, 4 logical and 2 physical cores

.NET SDK 8.0.414

[Host] : .NET 8.0.20 (8.0.2025.41914), X64 RyuJIT AVX2
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	Mean	Error	StdDev	Gen0	Gen1	Allocated
Bool_aweXpect	228.1 ns	0.99 ns	0.77 ns	0.0300	-	504 B
Bool_FluentAssertions	245.1 ns	5.57 ns	5.21 ns	0.0567	-	952 B
Bool_TUnit	874.5 ns	13.90 ns	12.32 ns	0.1431	-	2408 B
Equivalency_aweXpect	295,077.7 ns	696.09 ns	581.27 ns	20.0195	0.9766	335556 B
Equivalency_FluentAssertions	2,226,303.9 ns	12,187.23 ns	11,399.94 ns	273.4375	46.8750	4584416 B
Equivalency_TUnit	677,385.0 ns	2,498.30 ns	2,336.92 ns	51.7578	2.9297	880545 B
Int_GreaterThan_aweXpect	261.5 ns	2.74 ns	2.56 ns	0.0486	-	816 B
Int_GreaterThan_FluentAssertions	261.9 ns	2.24 ns	2.09 ns	0.0730	-	1224 B
Int_GreaterThan_TUnit	1,281.6 ns	10.25 ns	9.59 ns	0.1774	-	2984 B
ItemsCount_AtLeast_aweXpect	507.5 ns	3.21 ns	2.84 ns	0.0868	-	1464 B
ItemsCount_AtLeast_FluentAssertions	517.1 ns	3.58 ns	2.99 ns	0.1192	-	2008 B
ItemsCount_AtLeast_TUnit	15,307.2 ns	247.49 ns	231.50 ns	1.6174	-	27480 B
String_aweXpect	474.5 ns	6.67 ns	6.23 ns	0.0734	-	1232 B
String_FluentAssertions	464.8 ns	7.62 ns	7.13 ns	0.1292	-	2168 B
String_TUnit	1,278.1 ns	15.35 ns	14.36 ns	0.1831	-	3072 B
StringArray_aweXpect	1,930.7 ns	10.85 ns	9.06 ns	0.1717	-	2888 B
StringArray_FluentAssertions	1,370.1 ns	16.18 ns	13.51 ns	0.2480	-	4152 B
StringArray_TUnit	3,271.7 ns	37.06 ns	30.95 ns	0.3128	-	5296 B
StringArrayInAnyOrder_aweXpect	2,429.1 ns	43.48 ns	38.54 ns	0.1831	-	3080 B
StringArrayInAnyOrder_FluentAssertions	149,234.9 ns	838.43 ns	743.25 ns	3.4180	-	63787 B
StringArrayInAnyOrder_TUnit	3,806.4 ns	21.46 ns	17.92 ns	0.3853	-	6488 B

[github-actions]

👽 Mutation Results

aweXpect

Details

File	Score	Killed	Survived	Timeout	No Coverage	Ignored	Compile Errors	Total Detected	Total Undetected	Total Mutants
That/Delegates/ThatDelegateThrows.WithMessage.cs	100.00%	4	0	0	0	2	0	4	0	6
That/Delegates/ThatDelegateThrows.WithMessageContaining.cs	100.00%	4	0	0	0	2	0	4	0	6
That/Exceptions/ThatException.HasMessage.cs	100.00%	21	0	0	0	6	5	21	0	32
That/Exceptions/ThatException.HasMessageContaining.cs	86.05%	37	2	0	4	10	9	37	6	62

The final mutation score is 91.67%

Coverage Thresholds: high:80 low:60 break:0

aweXpect.Core

Details

File	Score	Killed	Survived	Timeout	No Coverage	Ignored	Compile Errors	Total Detected	Total Undetected	Total Mutants

The final mutation score is NaN%

Coverage Thresholds: high:80 low:60 break:0

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
93.4% Coverage on New Code
0.9% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Test Results

    14 files   - 24      14 suites   - 24   4m 23s ⏱️ -44s
17 911 tests +19  17 909 ✅ +19  2 💤 ±0  0 ❌ ±0 
50 367 runs  +30  50 365 ✅ +30  2 💤 ±0  0 ❌ ±0 

Results for commit 9d7a849. ± Comparison against base commit 935f53e.

This pull request removes 1568 and adds 1587 tests. Note that renamed tests count towards both.

aweXpect.Core.Tests.Core.Exceptions.FailExceptionTests ‑ Message_ShouldBeSet(message: "message4082f6d3-d6fb-459c-9504-73dbe6fcbbdb")
aweXpect.Core.Tests.Core.Exceptions.FailExceptionTests ‑ Message_ShouldBeSet(message: "messageb747d14f-b304-443e-809a-773f6eb445a9")
aweXpect.Core.Tests.Core.Exceptions.FailExceptionTests ‑ Message_ShouldBeSet(message: "messaged5b8ae94-bb52-40e2-b892-215792d2f7a6")
aweXpect.Core.Tests.Core.Exceptions.SkipExceptionTests ‑ Message_ShouldBeSet(message: "message3916c694-a5b9-4e6a-9f3b-9f915c5d9d77")
aweXpect.Core.Tests.Core.Exceptions.SkipExceptionTests ‑ Message_ShouldBeSet(message: "messagea950fd22-ed4f-43a8-8bca-1444a32dab17")
aweXpect.Core.Tests.Core.Exceptions.SkipExceptionTests ‑ Message_ShouldBeSet(message: "messagee7832bc8-cd2c-4fbc-a2bb-28710af7b56e")
aweXpect.Core.Tests.FailTests ‑ Test_ShouldThrowException(reason: "reason138eb6a9-a8b8-4da0-bc02-ca977f63ce2a")
aweXpect.Core.Tests.FailTests ‑ Test_ShouldThrowException(reason: "reasona256551e-662c-4ef6-884b-109eae21ca3b")
aweXpect.Core.Tests.FailTests ‑ Test_ShouldThrowException(reason: "reasondab3805d-195c-47f3-8510-5066968d8d26")
aweXpect.Core.Tests.FailTests ‑ Unless_ShouldThrowException(condition: False, reason: "reasonc6cf8556-fb51-4548-8d19-008a4c400d5c")
…

aweXpect.Core.Tests.Core.Exceptions.FailExceptionTests ‑ Message_ShouldBeSet(message: "message8c207fa4-645d-4e59-8347-a47b5d2b8703")
aweXpect.Core.Tests.Core.Exceptions.FailExceptionTests ‑ Message_ShouldBeSet(message: "messagea1f0bbd8-3887-4dbb-929d-6dada678d387")
aweXpect.Core.Tests.Core.Exceptions.FailExceptionTests ‑ Message_ShouldBeSet(message: "messagec31c55e0-e635-4659-ab72-96eca2a72b4d")
aweXpect.Core.Tests.Core.Exceptions.SkipExceptionTests ‑ Message_ShouldBeSet(message: "message338b768a-e18f-4c5d-9412-6ed2bfd18fe7")
aweXpect.Core.Tests.Core.Exceptions.SkipExceptionTests ‑ Message_ShouldBeSet(message: "messaged7d20355-0431-4fa9-a15d-ee001dda8dc0")
aweXpect.Core.Tests.Core.Exceptions.SkipExceptionTests ‑ Message_ShouldBeSet(message: "messagee6ddbf34-d678-45c4-9bc0-595d8cafcd22")
aweXpect.Core.Tests.FailTests ‑ Test_ShouldThrowException(reason: "reason1202598a-4fea-450e-8e79-5ed487fcd7ab")
aweXpect.Core.Tests.FailTests ‑ Test_ShouldThrowException(reason: "reason417162fd-660b-4c5d-8e4b-cfcfce4572cc")
aweXpect.Core.Tests.FailTests ‑ Test_ShouldThrowException(reason: "reasondc214b6f-4590-4c89-a73d-0357157fa407")
aweXpect.Core.Tests.FailTests ‑ Unless_ShouldThrowException(condition: False, reason: "reason33630c10-0c7a-40e7-a164-fdfc203adf68")
…

[github-actions]

This is addressed in release v2.25.0.