Azure Pipelines build all projects individually before running tests - unit-testing

Question

We have an application that has a number of projects isolated in their own solutions, each with their own UnitTest and IntegrationTest projects within those solutions. What happens on our locally hosted Azure DevOps applications is that the following code forces Azure DevOps to build each project in the solution before running tests. What I'd like to do is to run all tests sequentially on an initial build or at least cut the build time down because on the build server each build takes about a minute or 2 which is the bulk of the time. Since we have XUnit running the tests in say Rider it processes all tests across a solution from multiple projects well within a minute.
Is there a way to cut the build time or is this as good as it gets?
- task: DotNetCoreCLI#2
displayName: Unit Tests
inputs:
command: test
projects: '**/*UnitTest*/*.csproj'
arguments: '--configuration $(BuildConfiguration)'
# run integration tests
- task: DotNetCoreCLI#2
displayName: Integration Tests
inputs:
command: test
projects: '**/*IntegrationTest*/*.csproj'
arguments: '--configuration $(BuildConfiguration)'

Answer 1

What happens on our locally hosted azure devops application is that
the following code below will cause Azure Devops to build each project
in the solution before running tests.
For this issue , you can add --no-build argument to skip the project build on test run.
--no-build:
Doesn't build the test project before running it. This is listed in the Options part of document.
- task: DotNetCoreCLI#2
displayName: 'dotnet test'
inputs:
command: test
projects: '**/*UnitTest*/*.csproj'
arguments: '--configuration $(BuildConfiguration) --no-build'
Here is a case with similar issue , you can refer to it.