coverage: add tests for property, indexer, and method setup edge cases and matching logic

[vbreuss]

This pull request adds comprehensive new unit tests to the Mockolate internal test suite, focusing on improved coverage and correctness for property, indexer, and method setup behaviors. The new tests verify correct handling of edge cases, such as type conversions, storage allocation, and scenario management, as well as ensuring that default and user setups interact as intended.

Property and Setup Management:

• Added tests to ensure that default property setups do not overwrite user-defined setups and that user setups correctly overwrite defaults in MockRegistry and MockSetups.PropertySetups
• Introduced tests verifying that the internal property snapshot table in MockRegistry is updated and preserved correctly during property setup operations, including array growth and scenario handling

Indexer and Method Setup Handling:

• Added tests to ensure that indexer setups correctly handle unknown access types and improper type casting, and that storage allocation for indexer setups is managed correctly and efficiently
• Added tests for method setups to ensure that querying for the latest or matching setup on empty storage returns null without exceptions (MockSetupsTests.MethodsTests.cs).

Type Conversion and Getter Logic:

• Introduced tests to verify that property getter logic correctly handles type conversions, including returning stored values when requested as boxed supertypes and handling null references properly

Scenario Management:

• Added tests ensuring that requesting a scenario with an empty or null name returns the root scenario bucket as expected (MockSetupsTests.cs).

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Test Results

    21 files  ±  0      21 suites  ±0   10m 40s ⏱️ + 1m 31s
 3 993 tests + 57   3 991 ✅ + 57  2 💤 ±0  0 ❌ ±0 
25 969 runs  +399  25 965 ✅ +399  4 💤 ±0  0 ❌ ±0 

Results for commit 666459c. ± Comparison against base commit b0d1248.

[github-actions]

🚀 Benchmark Results

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)

AMD EPYC 9V74 2.87GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.203

[Host] : .NET 10.0.7 (10.0.7, 10.0.726.21808), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	Mean	Error	StdDev	Ratio	RatioSD	Gen0	Gen1	Allocated	Alloc Ratio
Event_Mockolate	352.9 ns	3.15 ns	2.63 ns	1.00	0.01	0.1254	0.0005	2.05 KB	1.00
Event_Moq	13,851.4 ns	28.22 ns	22.03 ns	39.26	0.29	0.7324	-	12.51 KB	6.09
Event_NSubstitute	5,194.9 ns	18.38 ns	17.19 ns	14.72	0.11	0.5493	0.0076	9.05 KB	4.40
Event_FakeItEasy	227,656.3 ns	417.24 ns	369.87 ns	645.20	4.69	0.7324	0.4883	15.39 KB	7.49
Event_Imposter	1,380.8 ns	3.38 ns	2.83 ns	3.91	0.03	0.5379	0.0153	8.8 KB	4.29
Event_TUnitMocks	170.2 ns	0.87 ns	0.72 ns	0.48	0.00	0.0837	0.0002	1.37 KB	0.67

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)

Intel Xeon Platinum 8370C CPU 2.80GHz (Max: 3.39GHz), 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.203

[Host] : .NET 10.0.7 (10.0.7, 10.0.726.21808), X64 RyuJIT x86-64-v4
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	N	Mean	Error	StdDev	Ratio	RatioSD	Gen0	Gen1	Allocated	Alloc Ratio
Indexer_Mockolate	1	1,092.4 ns	19.42 ns	18.17 ns	1.00	0.02	0.1640	-	4.03 KB	1.00
Indexer_Moq	1	161,517.5 ns	538.23 ns	449.45 ns	147.90	2.42	0.4883	-	20.36 KB	5.05
Indexer_NSubstitute	1	9,554.7 ns	25.66 ns	21.43 ns	8.75	0.14	0.5188	-	12.84 KB	3.18
Indexer_FakeItEasy	1	11,117.1 ns	36.27 ns	32.16 ns	10.18	0.17	0.5646	0.0153	13.87 KB	3.44
Indexer_Imposter	1	971.4 ns	12.98 ns	11.50 ns	0.89	0.02	0.2098	0.0019	5.16 KB	1.28
Indexer_Mockolate	10	2,911.6 ns	15.36 ns	14.37 ns	1.00	0.01	0.2060	-	5.09 KB	1.00
Indexer_Moq	10	171,489.9 ns	638.76 ns	597.49 ns	58.90	0.35	0.9766	0.7324	29.89 KB	5.88
Indexer_NSubstitute	10	22,128.4 ns	42.26 ns	39.53 ns	7.60	0.04	1.0376	0.0305	25.63 KB	5.04
Indexer_FakeItEasy	10	24,014.8 ns	108.05 ns	101.07 ns	8.25	0.05	1.4343	0.0610	35.48 KB	6.98
Indexer_Imposter	10	2,252.5 ns	25.07 ns	23.45 ns	0.77	0.01	0.3242	-	7.97 KB	1.57

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)

AMD EPYC 9V74 2.60GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.203

[Host] : .NET 10.0.7 (10.0.7, 10.0.726.21808), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	N	Mean	Error	StdDev	Ratio	RatioSD	Gen0	Gen1	Allocated	Alloc Ratio
Method_Mockolate	1	446.6 ns	3.80 ns	3.55 ns	1.00	0.01	0.1416	0.0010	2.32 KB	1.00
Method_Moq	1	131,774.7 ns	1,024.52 ns	908.21 ns	295.10	3.00	0.4883	-	14.58 KB	6.28
Method_NSubstitute	1	5,480.3 ns	78.58 ns	73.50 ns	12.27	0.19	0.5569	0.0076	9.12 KB	3.93
Method_FakeItEasy	1	5,586.1 ns	45.50 ns	40.33 ns	12.51	0.13	0.4959	-	8.11 KB	3.50
Method_Imposter	1	563.3 ns	13.01 ns	12.17 ns	1.26	0.03	0.2470	0.0029	4.04 KB	1.74
Method_TUnitMocks	1	719.0 ns	15.35 ns	14.36 ns	1.61	0.03	0.1774	0.0010	2.9 KB	1.25
Method_Mockolate	10	737.0 ns	7.82 ns	7.32 ns	1.00	0.01	0.1545	0.0010	2.53 KB	1.00
Method_Moq	10	138,225.6 ns	1,915.17 ns	1,791.45 ns	187.56	2.96	0.9766	0.7324	18.48 KB	7.30
Method_NSubstitute	10	8,037.2 ns	85.80 ns	80.26 ns	10.91	0.15	0.7324	0.0153	12.07 KB	4.77
Method_FakeItEasy	10	8,688.0 ns	143.79 ns	134.50 ns	11.79	0.21	0.9766	0.0305	16.05 KB	6.34
Method_Imposter	10	1,201.7 ns	10.15 ns	9.00 ns	1.63	0.02	0.3376	0.0057	5.52 KB	2.18
Method_TUnitMocks	10	1,829.6 ns	21.22 ns	19.85 ns	2.48	0.04	0.2747	0.0019	4.49 KB	1.77

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)

AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.203

[Host] : .NET 10.0.7 (10.0.7, 10.0.726.21808), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	N	Mean	Error	StdDev	Ratio	RatioSD	Gen0	Gen1	Allocated	Alloc Ratio
Property_Mockolate	1	565.1 ns	12.85 ns	12.02 ns	1.00	0.03	0.1574	0.0010	2.58 KB	1.00
Property_Moq	1	11,756.9 ns	79.80 ns	74.64 ns	20.81	0.45	0.6104	-	10.27 KB	3.98
Property_NSubstitute	1	7,609.9 ns	26.21 ns	24.52 ns	13.47	0.28	0.6866	-	11.45 KB	4.44
Property_FakeItEasy	1	8,659.7 ns	79.64 ns	70.60 ns	15.33	0.34	0.6866	-	11.24 KB	4.36
Property_Imposter	1	488.8 ns	16.07 ns	15.03 ns	0.87	0.03	0.1912	0.0019	3.13 KB	1.21
Property_TUnitMocks	1	792.8 ns	13.77 ns	12.88 ns	1.40	0.04	0.1526	0.0010	2.51 KB	0.97
Property_Mockolate	10	1,089.6 ns	16.50 ns	13.78 ns	1.00	0.02	0.1869	-	3.07 KB	1.00
Property_Moq	10	18,417.1 ns	138.34 ns	129.41 ns	16.91	0.24	1.0376	-	17.03 KB	5.55
Property_NSubstitute	10	17,188.5 ns	115.61 ns	102.49 ns	15.78	0.21	1.2817	0.0305	21.08 KB	6.87
Property_FakeItEasy	10	20,419.3 ns	82.77 ns	77.42 ns	18.74	0.24	1.8616	-	30.81 KB	10.03
Property_Imposter	10	1,153.4 ns	20.20 ns	17.90 ns	1.06	0.02	0.2842	0.0019	4.67 KB	1.52
Property_TUnitMocks	10	2,223.7 ns	19.68 ns	16.44 ns	2.04	0.03	0.2823	-	4.66 KB	1.52

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.4 LTS (Noble Numbat)

AMD EPYC 7763 2.45GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.203

[Host] : .NET 10.0.7 (10.0.7, 10.0.726.21808), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	Mean	Error	StdDev	Ratio	RatioSD	Gen0	Gen1	Allocated	Alloc Ratio
Callback_Mockolate	390.5 ns	1.14 ns	1.01 ns	1.00	0.00	0.1197	-	1.96 KB	1.00
Callback_Moq	97,510.4 ns	241.05 ns	213.68 ns	249.69	0.82	0.4883	0.2441	8.88 KB	4.53
Callback_NSubstitute	4,424.7 ns	6.04 ns	5.65 ns	11.33	0.03	0.4730	0.0076	7.74 KB	3.95
Callback_FakeItEasy	4,805.0 ns	23.34 ns	21.83 ns	12.30	0.06	0.4120	0.0153	6.81 KB	3.47
Callback_Imposter	401.8 ns	4.35 ns	4.07 ns	1.03	0.01	0.1454	0.0010	2.38 KB	1.22
Callback_TUnitMocks	589.1 ns	1.18 ns	1.05 ns	1.51	0.00	0.1602	0.0010	2.63 KB	1.34

[github-actions]

This is addressed in release v3.0.0.