refactor: migrate the remaining classic extension methods to extension blocks by vbreuss · Pull Request #905 · Testably/Mockolate

vbreuss · 2026-10-18T17:27:35Z

ParameterExtensions, ReturnsThrowsAsyncExtensions and CallbacksExtensions were the last public files that still used classic this extension methods, so the source and the API snapshots mixed two styles.

Not breaking: the lowered metadata signatures (names, generic parameter order and constraints, parameter types, defaults, [CallerArgumentExpression]) are identical on all target frameworks, and test assemblies compiled against main pass against the new library, including already generated mocks that call CallbacksExtensions.Register<T>.
Explicit type arguments in extension form (setup.ReturnsAsync<int>(5)) still compile; they bind to the block's type parameters.
The generated ReturnsThrowsAsyncExtensions2 for higher arities stays classic.

…n blocks `ParameterExtensions`, `ReturnsThrowsAsyncExtensions` and `CallbacksExtensions` were the last public files that still used classic `this` extension methods, so the source and the API snapshots mixed two styles. - Not breaking: the lowered metadata signatures (names, generic parameter order and constraints, parameter types, defaults, `[CallerArgumentExpression]`) are identical on all target frameworks, and test assemblies compiled against main pass against the new library, including already generated mocks that call `CallbacksExtensions.Register<T>`. - Explicit type arguments in extension form (`setup.ReturnsAsync<int>(5)`) still compile; they bind to the block's type parameters. - The generated `ReturnsThrowsAsyncExtensions2` for higher arities stays classic.

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sonarqubecloud · 2026-10-18T18:34:51Z

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 · 2026-10-18T20:21:55Z

Test Results

24 files 24 suites 28m 5s ⏱️
4 514 tests 4 514 ✅ 0 💤 0 ❌
28 680 runs 28 680 ✅ 0 💤 0 ❌

Results for commit cf2231a.

github-actions · 2026-10-18T20:36:10Z

👽 Mutation Results

Mockolate

Details

File	Score	Killed	Survived	Timeout	No Coverage	Ignored	Compile Errors	Runtime Errors	Total Detected	Total Undetected	Total Mutants
ParameterExtensions.cs	70.00%	63	27	0	0	22	2	0	63	27	114
Setup/CallbacksExtensions.cs	100.00%	3	0	0	0	1	0	0	3	0	4

The final mutation score is 70.97%

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

github-actions · 2026-10-18T20:40:47Z

🚀 Benchmark Results

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)

AMD EPYC 9V74 3.49GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.303

[Host] : .NET 10.0.13 (10.0.13, 10.0.1326.50504), X64 RyuJIT x86-64-v4
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Method	N	Mean	Error	StdDev	Ratio	Allocated	Alloc Ratio
baseline*	1	377.9 ns	10.49 ns	9.81 ns	1.38	1.93 KB	1.00
Mockolate	1	274.5 ns	2.01 ns	1.78 ns	1.00	1.93 KB	1.00
Imposter	1	409.0 ns	2.22 ns	1.97 ns	1.49	3.96 KB	2.05
TUnitMocks	1	391.9 ns	2.89 ns	2.70 ns	1.43	2.02 KB	1.05
Moq	1	104,386.9 ns	728.68 ns	645.96 ns	380.35	14.59 KB	7.56
NSubstitute	1	4,557.4 ns	17.81 ns	15.78 ns	16.61	9.12 KB	4.72
FakeItEasy	1	4,564.5 ns	29.18 ns	27.30 ns	16.63	8.05 KB	4.17

baseline*	10	684.1 ns	19.95 ns	18.66 ns	1.40	2.14 KB	1.00
Mockolate	10	487.0 ns	3.79 ns	3.54 ns	1.00	2.14 KB	1.00
Imposter	10	694.9 ns	11.11 ns	10.39 ns	1.43	4.8 KB	2.24
TUnitMocks	10	1,154.8 ns	10.50 ns	9.82 ns	2.37	3.73 KB	1.74
Moq	10	107,745.2 ns	613.86 ns	544.17 ns	221.27	18.49 KB	8.64
NSubstitute	10	6,566.1 ns	125.46 ns	117.36 ns	13.48	12.07 KB	5.64
FakeItEasy	10	7,042.0 ns	106.81 ns	94.69 ns	14.46	15.42 KB	7.20

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)

AMD EPYC 7763 3.23GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.303

[Host] : .NET 10.0.13 (10.0.13, 10.0.1326.50504), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Event	Mean	Error	StdDev	Ratio	Allocated	Alloc Ratio
baseline*	169.63 ns	4.339 ns	4.059 ns	0.53	1.7 KB	1.00
Mockolate	320.7 ns	13.71 ns	12.83 ns	1.00	1.7 KB	1.00
Imposter	972.3 ns	20.58 ns	17.18 ns	3.04	7.18 KB	4.22
TUnitMocks	189.1 ns	2.74 ns	2.29 ns	0.59	1.34 KB	0.79
Moq	16,620.7 ns	74.60 ns	69.78 ns	51.90	12.73 KB	7.47
NSubstitute	6,161.8 ns	67.42 ns	63.07 ns	19.24	9.05 KB	5.31
FakeItEasy	222,445.9 ns	1,906.24 ns	1,783.10 ns	694.60	15.26 KB	8.96

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)

AMD EPYC 7763 2.60GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.303

[Host] : .NET 10.0.13 (10.0.13, 10.0.1326.50504), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Callback	Mean	Error	StdDev	Ratio	Allocated	Alloc Ratio
baseline*	215.7 ns	5.42 ns	4.81 ns	0.67	1.57 KB	1.00
Mockolate	320.7 ns	8.23 ns	7.70 ns	1.00	1.57 KB	1.00
Imposter	433.0 ns	6.13 ns	5.73 ns	1.35	2.37 KB	1.51
TUnitMocks	503.1 ns	6.68 ns	5.92 ns	1.57	2 KB	1.27
Moq	99,362.8 ns	627.95 ns	587.39 ns	310.01	8.88 KB	5.66
NSubstitute	4,754.8 ns	24.80 ns	20.71 ns	14.84	7.71 KB	4.91
FakeItEasy	4,863.0 ns	19.90 ns	17.64 ns	15.17	6.81 KB	4.33

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)

AMD EPYC 7763 3.14GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.303

[Host] : .NET 10.0.13 (10.0.13, 10.0.1326.50504), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Indexer	N	Mean	Error	StdDev	Ratio	Allocated	Alloc Ratio
baseline*	1	921.1 ns	22.93 ns	21.44 ns	0.92	3.77 KB	1.00
Mockolate	1	997.5 ns	46.28 ns	43.29 ns	1.00	3.77 KB	1.00
Imposter	1	829.1 ns	12.88 ns	12.04 ns	0.83	4.99 KB	1.33
Moq	1	219,140.4 ns	1,128.93 ns	1,000.77 ns	220.08	20.37 KB	5.41
NSubstitute	1	10,634.0 ns	49.74 ns	46.53 ns	10.68	12.84 KB	3.41
FakeItEasy	1	12,293.9 ns	52.80 ns	46.80 ns	12.35	13.63 KB	3.62

baseline*	10	2,396.3 ns	12.49 ns	11.68 ns	0.95	4.82 KB	1.00
Mockolate	10	2,533.5 ns	11.13 ns	9.86 ns	1.00	4.82 KB	1.00
Imposter	10	1,556.0 ns	40.96 ns	38.31 ns	0.61	6.47 KB	1.34
Moq	10	232,959.9 ns	1,003.24 ns	938.43 ns	91.95	29.89 KB	6.20
NSubstitute	10	25,956.6 ns	88.00 ns	78.01 ns	10.25	25.63 KB	5.32
FakeItEasy	10	25,390.7 ns	368.83 ns	326.96 ns	10.02	32.97 KB	6.84

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)

AMD EPYC 7763 2.73GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.303

[Host] : .NET 10.0.13 (10.0.13, 10.0.1326.50504), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

CreateMock	Mean	Error	StdDev	Ratio	Allocated	Alloc Ratio
baseline*	20.91 ns	1.009 ns	0.944 ns	1.14	160 B	1.00
Mockolate	18.40 ns	0.455 ns	0.426 ns	1.00	160 B	1.00
Imposter	280.99 ns	5.126 ns	4.544 ns	15.28	2240 B	14.00
TUnitMocks	37.52 ns	0.941 ns	0.880 ns	2.04	200 B	1.25
Moq	1,439.41 ns	11.153 ns	10.432 ns	78.26	2096 B	13.10
NSubstitute	1,956.47 ns	31.335 ns	29.311 ns	106.38	5048 B	31.55
FakeItEasy	1,810.31 ns	24.203 ns	22.640 ns	98.43	2763 B	17.27

Details

BenchmarkDotNet v0.15.8, Linux Ubuntu 24.04.5 LTS (Noble Numbat)

AMD EPYC 7763 3.24GHz, 1 CPU, 4 logical and 2 physical cores

.NET SDK 10.0.303

[Host] : .NET 10.0.13 (10.0.13, 10.0.1326.50504), X64 RyuJIT x86-64-v3
Job=InProcess  Toolchain=InProcessEmitToolchain  IterationCount=15

LaunchCount=1  WarmupCount=10

Property	N	Mean	Error	StdDev	Ratio	Allocated	Alloc Ratio
baseline*	1	593.3 ns	11.87 ns	11.10 ns	1.14	2.41 KB	1.00
Mockolate	1	522.1 ns	22.02 ns	20.60 ns	1.00	2.41 KB	1.00
Imposter	1	406.6 ns	2.38 ns	1.99 ns	0.78	2.98 KB	1.23
TUnitMocks	1	454.5 ns	4.28 ns	4.00 ns	0.87	1.64 KB	0.68
Moq	1	11,889.9 ns	80.24 ns	71.13 ns	22.80	10.39 KB	4.30
NSubstitute	1	7,917.8 ns	72.79 ns	68.09 ns	15.19	11.45 KB	4.74
FakeItEasy	1	8,353.8 ns	42.61 ns	37.78 ns	16.02	11.24 KB	4.66

baseline*	10	959.2 ns	15.07 ns	14.09 ns	0.91	2.91 KB	1.00
Mockolate	10	1,057.7 ns	17.84 ns	15.82 ns	1.00	2.91 KB	1.00
Imposter	10	636.5 ns	3.22 ns	2.86 ns	0.60	3.26 KB	1.12
TUnitMocks	10	1,566.2 ns	6.65 ns	6.22 ns	1.48	3.94 KB	1.35
Moq	10	18,734.6 ns	97.29 ns	81.24 ns	17.72	18.28 KB	6.29
NSubstitute	10	17,588.4 ns	59.52 ns	52.77 ns	16.63	21.08 KB	7.25
FakeItEasy	10	19,478.7 ns	50.86 ns	47.58 ns	18.42	30.81 KB	10.60

baseline* rows show the corresponding Mockolate benchmark from the most recent successful main branch build with results, for regression comparison.

… extension methods to extension blocks (#905) by Valentin Breuß

vbreuss self-assigned this Oct 18, 2026

Copilot AI balanced review requested due to automatic review settings October 18, 2026 17:27

Copilot AI reviewed Oct 18, 2026

vbreuss merged commit e9b7e8a into main Oct 18, 2026
18 checks passed

vbreuss deleted the refactor/extension-blocks branch October 18, 2026 23:10

github-actions Bot added a commit that referenced this pull request Oct 19, 2026

Update benchmark for e9b7e8a: refactor: migrate the remaining classic…

f38523b

… extension methods to extension blocks (#905) by Valentin Breuß

github-actions Bot added a commit that referenced this pull request Oct 19, 2026

Update benchmark for e9b7e8a: refactor: migrate the remaining classic…

a4acf94

… extension methods to extension blocks (#905) by Valentin Breuß

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refactor: migrate the remaining classic extension methods to extension blocks - #905

refactor: migrate the remaining classic extension methods to extension blocks#905
vbreuss merged 1 commit into
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refactor/extension-blocks

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sonarqubecloud Bot commented Oct 18, 2026

Quality Gate passed

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Test Results

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👽 Mutation Results

Mockolate

The final mutation score is 70.97%

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

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🚀 Benchmark Results

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