Fix for disable_timer_outputs

[m-bossart]

• Fixes a bug related to an unknown variable (BUILD_PROBLEMS_TIMER).
• Automatically enables the BUILD_TIMERat the start of building the simulation if disable_timer_outputs == false .
• Adds a test for the case where disable_timer_outputs == true.

[codecov[bot]]

Codecov Report

Merging #346 (471de96) into main (5796411) will increase coverage by 0.43%. Report is 1 commits behind head on main. The diff coverage is 100.00%.

Additional details and impacted files

[](https://app.codecov.io/gh/NREL-Sienna/PowerSimulationsDynamics.jl/pull/346?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NREL-Sienna) ```diff @@ Coverage Diff @@ ## main #346 +/- ## ========================================== + Coverage 86.99% 87.42% +0.43% ========================================== Files 65 65 Lines 8664 8619 -45 ========================================== - Hits 7537 7535 -2 + Misses 1127 1084 -43 ``` | Flag | Coverage Δ | | |---|---|---| | unittests | `87.42% <100.00%> (+0.43%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NREL-Sienna#carryforward-flags-in-the-pull-request-comment) to find out more. | [Files Changed](https://app.codecov.io/gh/NREL-Sienna/PowerSimulationsDynamics.jl/pull/346?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NREL-Sienna) | Coverage Δ | | |---|---|---| | [src/base/simulation.jl](https://app.codecov.io/gh/NREL-Sienna/PowerSimulationsDynamics.jl/pull/346?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NREL-Sienna#diff-c3JjL2Jhc2Uvc2ltdWxhdGlvbi5qbA==) | `93.30% <100.00%> (+1.39%)` | :arrow_up: | ... and [4 files with indirect coverage changes](https://app.codecov.io/gh/NREL-Sienna/PowerSimulationsDynamics.jl/pull/346/indirect-changes?src=pr&el=tree-more&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=NREL-Sienna)

[github-actions[bot]]

Performance Results	Version	Precompile Time
Main	5.223912328
This Branch	5.238405931

Version	Run Time
Main-Build ResidualModel	13.340940484
Main-Execute ResidualModel	34.662727625
Main-Build MassMatrixModel	1.147260331
Main-Execute MassMatrixModel	361.503381802
This Branch-Build ResidualModel	13.070988115
This Branch-Execute ResidualModel	35.820242166
This Branch-Build MassMatrixModel	1.216337583
This Branch-Execute MassMatrixModel	363.821898643

ResidualModel and MassMatrixModel performance results should be compared between versions and not between models due to the execution order of the tests