Add support for building just a subset of runtime tests

docs/workflow/testing/coreclr/unix-test-instructions.md

@@ -40,6 +40,38 @@ The `src/tests/build.sh` script generates the Core_Root folder, which contains t
 
 The output will be at `<repo_root>/artifacts/tests/coreclr/<os>.<arch>.<configuration>/Tests/Core_Root`.
 
+## Building Test Subsets
+
+The `src/tests/build.sh` script supports three options that let you limit the set of tests to build;
+when none of these is specified, the entire test tree (under `src/tests`) gets built but that can be
+lengthy (especially in `-priority1` mode) and unnecessary when working on a particular test.
+
+1) `-test:<test-project>` - build a particular test project specified by its project file path,
+either absolute or relative to `src/tests`. The option can be specified multiple times on the command
+line to request building several individual projects; alternatively, a single occurrence of the option
+can represent several project paths separated by semicolons.
+
+**Example**: `src/tests/build.sh -test:JIT/Methodical/divrem/div/i4div_cs_do.csproj;JIT/Methodical/divrem/div/i8div_cs_do.csproj`
+
+2) `-dir:<test-folder>` - build all test projects within a given directory path, either absolute
+or relative to `src/tests`. The option can be specified multiple times on the command line to request
+building projects in several folders; alternatively, a single occurrence of this option can represent
+several project folders separated by semicolons.
+
+**Example**: `src/tests/build.sh -dir:JIT/Methodical/Arrays/huge;JIT/Methodical/divrem/div`
+
+3) `-tree:<root-folder>` - build all test projects within the subtree specified by its root path,
+either absolute or relative to `src/tests`. The option can be specified multiple times on the command
+line to request building projects in several subtrees; alternatively, a single instance of the option
+can represent several project subtree root folder paths separated by semicolons.
+
+**Example**: `src/tests/build.sh -tree:baseservices/exceptions;JIT/Methodical`
+
+**Please note** that priority filtering is orthogonal to specifying test subsets; even when you request
+building a particular test and the test is Pri1, you need to specify `-priority1` in the command line,
+otherwise the test build will get skipped. While somewhat unintuitive, 'fixing' this ad hoc would likely
+create more harm than good and we're hoping to ultimately get rid of the test priorities in the long term
+anyway.
 
 ## Building Individual Tests
 

docs/workflow/testing/coreclr/windows-test-instructions.md

@@ -77,6 +77,39 @@ For additional supported parameters use the following:
 src\tests\build.cmd -?
 ```
 
+## Building Test Subsets
+
+The `src\tests\build.cmd` script supports three options that let you limit the set of tests to build;
+when none of these is specified, the entire test tree (under `src\tests`) gets built but that can be
+lengthy (especially in `-priority=1` mode) and unnecessary when working on a particular test.
+
+1) `test <test-project>` - build a particular test project specified by its project file path,
+either absolute or relative to `src\tests`. The option can be specified multiple times on the command
+line to request building several individual projects; alternatively, a single occurrence of the option
+can represent several project paths separated by semicolons.
+
+**Example**: `src\tests\build.cmd test JIT/Methodical/divrem/div/i4div_cs_do.csproj;JIT/Methodical/divrem/div/i8div_cs_do.csproj`
+
+2) `dir <test-folder>` - build all test projects within a given directory path, either absolute
+or relative to `src\tests`. The option can be specified multiple times on the command line to request
+building projects in several folders; alternatively, a single instance of the option
+can represent several project folders separated by semicolons.
+
+**Example**: `src\tests\build.cmd dir JIT/Methodical/Arrays/huge;JIT/Methodical/divrem/div`
+
+3) `tree <root-folder>` - build all test projects within the subtree specified by its root path,
+either absolute or relative to `src\tests`. The option can be specified multiple times on the command
+line to request building projects in several subtrees; alternatively, a single instance of the option
+can represent several project subtree root folder paths separated by semicolons.
+
+**Example**: `src\tests\build.cmd tree baseservices/exceptions;JIT/Methodical`
+
+**Please note** that priority filtering is orthogonal to specifying test subsets; even when you request
+building a particular test and the test is Pri1, you need to specify `-priority=1` in the command line,
+otherwise the test build will get skipped. While somewhat unintuitive, 'fixing' this ad hoc would likely
+create more harm than good and we're hoping to ultimately get rid of the test priorities in the long term
+anyway.
+
 ## Building Individual Tests
 
 **Note:** `build.cmd skipmanaged [Any additional flags]` needs to be run at least once if the individual test has native assets.

src/tests/Common/dirs.proj

@@ -20,6 +20,28 @@
     </ItemGroup>
 
     <ItemGroup>
+      <BuildTestProjects Include="$(BuildTestProject.Split(';'))" />
+      <BuildTestDirs Include="$(BuildTestDir.Split(';'))" />
+      <BuildTestTrees Include="$(BuildTestTree.Split(';'))" />
+    </ItemGroup>
+
+    <ItemGroup Condition="'@(BuildTestProjects)' != ''">
+      <AllProjects Include="$([MSBuild]::NormalizePath('$(TestRoot)', '%(BuildTestProjects.Identity)'))" Exclude="@(DisabledProjects)" />
+    </ItemGroup>
+
+    <ItemGroup Condition="'@(BuildTestDirs)' != ''">
+      <AllProjects Include="$([MSBuild]::NormalizeDirectory('$(TestRoot)', '%(BuildTestDirs.Identity)'))\*.csproj" Exclude="@(DisabledProjects)" />
+      <AllProjects Include="$([MSBuild]::NormalizeDirectory('$(TestRoot)', '%(BuildTestDirs.Identity)'))\*.fsproj" Exclude="@(DisabledProjects)" />
+      <AllProjects Include="$([MSBuild]::NormalizeDirectory('$(TestRoot)', '%(BuildTestDirs.Identity)'))\*.ilproj" Exclude="@(DisabledProjects)" />
+    </ItemGroup>
+
+    <ItemGroup Condition="'@(BuildTestTrees)' != ''">
+      <AllProjects Include="$([MSBuild]::NormalizeDirectory('$(TestRoot)', '%(BuildTestTrees.Identity)'))\**\*.csproj" Exclude="@(DisabledProjects)" />
+      <AllProjects Include="$([MSBuild]::NormalizeDirectory('$(TestRoot)', '%(BuildTestTrees.Identity)'))\**\*.fsproj" Exclude="@(DisabledProjects)" />
+      <AllProjects Include="$([MSBuild]::NormalizeDirectory('$(TestRoot)', '%(BuildTestTrees.Identity)'))\**\*.ilproj" Exclude="@(DisabledProjects)" />
+    </ItemGroup>
+
+    <ItemGroup Condition="'@(BuildTestProjects)' == '' and '@(BuildTestDirs)' == '' and '@(BuildTestTrees)' == ''">
       <AllProjects Include="$(TestRoot)**\*.csproj" Exclude="@(DisabledProjects)" />
       <AllProjects Include="$(TestRoot)**\*.fsproj" Exclude="@(DisabledProjects)" />
       <AllProjects Include="$(TestRoot)**\*.ilproj" Exclude="@(DisabledProjects)" />

src/tests/build.cmd

@@ -41,6 +41,11 @@ set processedArgs=
 set __UnprocessedBuildArgs=
 set __CommonMSBuildArgs=
 
+set __RebuildTests=0
+set __BuildTestProject=%%3B
+set __BuildTestDir=%%3B
+set __BuildTestTree=%%3B
+
 set __SkipRestorePackages=
 set __SkipManaged=
 set __SkipTestWrappers=
@@ -95,6 +100,12 @@ if /i "%1" == "skipnative"            (set __SkipNative=1&set __CopyNativeProjec
 if /i "%1" == "skiptestwrappers"      (set __SkipTestWrappers=1&set processedArgs=!processedArgs! %1&shift&goto Arg_Loop)
 if /i "%1" == "skipgeneratelayout"    (set __SkipGenerateLayout=1&set processedArgs=!processedArgs! %1&shift&goto Arg_Loop)
 
+if /i "%1" == "rebuild"               (set __RebuildTests=1&set processedArgs=!processedArgs! %1&shift&goto Arg_Loop)
+
+if /i "%1" == "test"                  (set __BuildTestProject=!__BuildTestProject!%2%%3B&set processedArgs=!processedArgs! %1 %2&shift&shift&goto Arg_Loop)
+if /i "%1" == "dir"                   (set __BuildTestDir=!__BuildTestDir!%2%%3B&set processedArgs=!processedArgs! %1 %2&shift&shift&goto Arg_Loop)
+if /i "%1" == "tree"                  (set __BuildTestTree=!__BuildTestTree!%2%%3B&set processedArgs=!processedArgs! %1 %2&shift&shift&goto Arg_Loop)
+
 if /i "%1" == "copynativeonly"        (set __CopyNativeTestBinaries=1&set __SkipNative=1&set __CopyNativeProjectsAfterCombinedTestBuild=false&set __SkipGenerateLayout=1&set __SkipTestWrappers=1&set __SkipCrossgenFramework=1&set processedArgs=!processedArgs! %1&shift&goto Arg_Loop)
 if /i "%1" == "generatelayoutonly"    (set __SkipManaged=1&set __SkipNative=1&set __CopyNativeProjectsAfterCombinedTestBuild=false&set processedArgs=!processedArgs! %1&shift&goto Arg_Loop)
 if /i "%1" == "buildtestwrappersonly" (set __SkipNative=1&set __SkipManaged=1&set __BuildTestWrappersOnly=1&set __SkipGenerateLayout=1&set processedArgs=!processedArgs! %1&shift&goto Arg_Loop)
@@ -156,6 +167,11 @@ set "__TestRootDir=%__RootBinDir%\tests\coreclr"
 set "__TestBinDir=%__TestRootDir%\%__OSPlatformConfig%"
 set "__TestIntermediatesDir=%__TestRootDir%\obj\%__OSPlatformConfig%"
 
+if "%__RebuildTests%" == "1" (
+    echo Removing tests build dir^: !__TestBinDir!
+    rmdir /s /q !__TestBinDir!
+)
+
 if not defined XunitTestBinBase set XunitTestBinBase=%__TestBinDir%\
 set "CORE_ROOT=%XunitTestBinBase%\Tests\Core_Root"
 
@@ -361,6 +377,10 @@ for /l %%G in (1, 1, %__NumberOfTestGroups%) do (
         set __MSBuildBuildArgs=!__MSBuildBuildArgs! /p:__SkipPackageRestore=true
         set __MSBuildBuildArgs=!__MSBuildBuildArgs! !__NativeBinariesLayoutTypeArg!
         set __MSBuildBuildArgs=!__MSBuildBuildArgs! /p:RuntimeFlavor=!__RuntimeFlavor!
+        set __MSBuildBuildArgs=!__MSBuildBuildArgs! /p:BuildTestProject=!__BuildTestProject!
+        set __MSBuildBuildArgs=!__MSBuildBuildArgs! /p:BuildTestDir=!__BuildTestDir!
+        set __MSBuildBuildArgs=!__MSBuildBuildArgs! /p:BuildTestTree=!__BuildTestTree!
+
         echo Running: msbuild !__MSBuildBuildArgs!
         !__CommonMSBuildCmdPrefix! !__MSBuildBuildArgs!
 
@@ -558,6 +578,10 @@ echo -priority=^<N^> : specify a set of tests that will be built and run, with p
 echo     0: Build only priority 0 cases as essential testcases (default)
 echo     1: Build all tests with priority 0 and 1
 echo     666: Build all tests with priority 0, 1 ... 666
+echo test ^<xxx^>: Only build test project ^<xxx^> ^(relative or absolute project path under src\tests^)
+echo dir ^<xxx^>: Build all test projects in the folder ^<xxx^> ^(relative or absolute folder under src\tests^)
+echo tree ^<xxx^>: Build all test projects in the subtree ^<xxx^> ^(relative or absolute folder under src\tests^)
+echo rebuild: Clean up all test artifacts prior to building tests
 echo allTargets: Build managed tests for all target platforms.
 echo -verbose: enables detailed file logging for the msbuild tasks into the msbuild log file.
 exit /b 1

src/tests/build.sh

@@ -64,14 +64,6 @@ generate_layout()
 
     __ProjectFilesDir="$__TestDir"
     __TestBinDir="$__TestWorkingDir"
-
-    if [[ "$__RebuildTests" -ne 0 ]]; then
-        if [[ -d "${__TestBinDir}" ]]; then
-            echo "Removing tests build dir: ${__TestBinDir}"
-            rm -rf "$__TestBinDir"
-        fi
-    fi
-
     __CMakeBinDir="${__TestBinDir}"
 
     if [[ -z "$__TestIntermediateDir" ]]; then
@@ -370,6 +362,9 @@ build_MSBuild_projects()
             buildArgs+=("\"/p:CopyNativeProjectBinaries=${__CopyNativeProjectsAfterCombinedTestBuild}\"");
             buildArgs+=("/p:__SkipPackageRestore=true");
             buildArgs+=("/bl:${__RepoRootDir}/artifacts/log/${__BuildType}/build_managed_tests_${testGroupToBuild}.binlog");
+            buildArgs+=("/p:BuildTestProject=${__BuildTestProject}");
+            buildArgs+=("/p:BuildTestDir=${__BuildTestDir}");
+            buildArgs+=("/p:BuildTestTree=${__BuildTestTree}");
 
             # Disable warnAsError - coreclr issue 19922
             nextCommand="\"$__RepoRootDir/eng/common/msbuild.sh\" $__ArcadeScriptArgs --warnAsError false ${buildArgs[@]}"
@@ -432,6 +427,10 @@ usage_list+=("-buildtestwrappersonly: only build the test wrappers.")
 usage_list+=("-copynativeonly: Only copy the native test binaries to the managed output. Do not build the native or managed tests.")
 usage_list+=("-generatelayoutonly: only pull down dependencies and build coreroot.")
 
+usage_list+=("-test:xxx - only build a single test project");
+usage_list+=("-dir:xxx - build all tests in a given directory");
+usage_list+=("-tree:xxx - build all tests in a given subtree");
+
 usage_list+=("-crossgen2: Precompiles the framework managed assemblies in coreroot using the Crossgen2 compiler.")
 usage_list+=("-priority1: include priority=1 tests in the build.")
 usage_list+=("-allTargets: Build managed tests for all target platforms.")
@@ -492,6 +491,24 @@ handle_arguments_local() {
             __RebuildTests=1
             ;;
 
+        test*|-test*)
+            local arg="$1"
+            local parts=(${arg//:/ })
+            __BuildTestProject="$__BuildTestProject${parts[1]}%3B"
+            ;;
+
+        dir*|-dir*)
+            local arg="$1"
+            local parts=(${arg//:/ })
+            __BuildTestDir="$__BuildTestDir${parts[1]}%3B"
+            ;;
+
+        tree*|-tree*)
+            local arg="$1"
+            local parts=(${arg//:/ })
+            __BuildTestTree="$__BuildTestTree${parts[1]}%3B"
+            ;;
+
         runtests|-runtests)
             __RunTests=1
             ;;
@@ -541,6 +558,9 @@ __DistroRid=""
 __DoCrossgen2=0
 __CompositeBuildMode=0
 __TestBuildMode=
+__BuildTestProject="%3B"
+__BuildTestDir="%3B"
+__BuildTestTree="%3B"
 __DotNetCli="$__RepoRootDir/dotnet.sh"
 __GenerateLayoutOnly=
 __IsMSBuildOnNETCoreSupported=0
@@ -611,6 +631,13 @@ if [[ -z "$HOME" ]]; then
     echo "HOME not defined; setting it to $HOME"
 fi
 
+if [[ "$__RebuildTests" -ne 0 ]]; then
+    if [[ -d "${__TestWorkingDir}" ]]; then
+        echo "Removing tests build dir: ${__TestWorkingDir}"
+        rm -rf "${__TestWorkingDir}"
+    fi
+fi
+
 if [[ (-z "$__GenerateLayoutOnly") && (-z "$__BuildTestWrappersOnly") && ("$__MonoAot" -eq 0) ]]; then
     build_Tests
 elif [[ ! -z "$__BuildTestWrappersOnly" ]]; then