[tests] Add make target to build (not run) all the test suites. (#21575)

This is useful to verify that sweeping code changes actually compile everywhere.

tests/Makefile

@@ -333,3 +333,20 @@ package-test-libraries.zip:
 	$(Q_GEN) cd $(TOP) && zip -9r --symlinks $(abspath $@).tmp ./tests/test-libraries
 	$(Q_GEN) cd $(TOP) && find tests -regex 'tests/test-libraries/custom-type-assembly/.libs/.*dll' -exec zip -9r --symlinks $(abspath $@).tmp {} +
 	$(Q) mv "$@".tmp "$@"
+
+build-all:
+	$(MAKE) build -C bgen
+	$(MAKE) build -C cecil-tests
+	$(MAKE) build -C dotnet/UnitTests
+	$(MAKE) build -C rgen
+	$(MAKE) build -C xtro-sharpie
+	$(MAKE) build-all -C "linker/ios/dont link/dotnet"
+	$(MAKE) build-all -C "linker/ios/link all/dotnet"
+	$(MAKE) build-all -C "linker/ios/link sdk/dotnet"
+	$(MAKE) build-all -C "linker/ios/trimmode copy/dotnet"
+	$(MAKE) build-all -C "linker/ios/trimmode link/dotnet"
+	$(MAKE) build-all -C fsharp/dotnet
+	$(MAKE) build-all -C interdependent-binding-projects/dotnet
+	$(MAKE) build-all -C introspection/dotnet
+	$(MAKE) build-all -C monotouch-test/dotnet
+	$(MAKE) build-all -C xcframework-test/dotnet

tests/bgen/Makefile

@@ -3,3 +3,6 @@ include $(TOP)/Make.config
 
 run-tests run-unit-tests:
 	$(Q) $(DOTNET) test $(TEST_FILTER) bgen-tests.csproj
+
+build:
+	$(Q) $(DOTNET) build bgen-tests.csproj

tests/framework-test/dotnet/Makefile

@@ -1,8 +1,2 @@
 TOP=../../..
 include $(TOP)/Make.config
-
-build-all:
-	for platform in $(DOTNET_PLATFORMS); do \
-		echo "Building in $$platform"; \
-		$(MAKE) -C "$$platform" build; \
-	done

tests/fsharp/dotnet/Makefile

@@ -1,8 +1,2 @@
 TOP=../../..
-include $(TOP)/Make.config
-
-build-all:
-	for platform in $(DOTNET_PLATFORMS); do \
-		echo "Building in $$platform"; \
-		$(MAKE) -C "$$platform" build; \
-	done
+include $(TOP)/tests/common/shared-dotnet-test.mk

tests/interdependent-binding-projects/dotnet/Makefile

@@ -0,0 +1,2 @@
+TOP=../../..
+include $(TOP)/tests/common/shared-dotnet-test.mk

tests/linker/ios/trimmode copy/dotnet/Makefile

@@ -1,2 +1,2 @@
-TOP=../../../..
+TOP=../../../../..
 include $(TOP)/tests/common/shared-dotnet-test.mk

tests/linker/ios/trimmode link/dotnet/Makefile

@@ -1,2 +1,2 @@
-TOP=../../../..
+TOP=../../../../..
 include $(TOP)/tests/common/shared-dotnet-test.mk

tests/rgen/Makefile

@@ -0,0 +1,22 @@
+TOP=../..
+include $(TOP)/Make.config
+
+# Example TEST_FILTER:
+#    TEST_FILTER="--filter FullyQualifiedName~BuildMyCocoaApp"
+# Docs: https://docs.microsoft.com/en-us/dotnet/core/tools/dotnet-test#filter-option-details
+
+build-bindings-analyzer-tests:
+	$(Q) $(DOTNET) build Microsoft.Macios.Bindings.Analyzer.Tests/Microsoft.Macios.Bindings.Analyzer.Tests.csproj $(DOTNET_BUILD_VERBOSITY)
+
+run-bindings-analyzer-tests:
+	$(Q) $(DOTNET) test Microsoft.Macios.Bindings.Analyzer.Tests/Microsoft.Macios.Bindings.Analyzer.Tests.csproj $(TEST_FILTER)
+
+build-generator-tests:
+	$(Q) $(DOTNET) build Microsoft.Macios.Generator.Tests/Microsoft.Macios.Generator.Tests.csproj $(DOTNET_BUILD_VERBOSITY)
+
+run-generator-tests:
+	$(Q) $(DOTNET) test Microsoft.Macios.Generator.Tests/Microsoft.Macios.Generator.Tests.csproj $(TEST_FILTER)
+
+build-all: build-bindings-analyzer-tests build-generator-tests
+
+run-tests run test: run-bindings-analyzer-tests run-generator-tests

tests/xcframework-test/dotnet/Makefile

@@ -1,8 +1,2 @@
 TOP=../../..
-include $(TOP)/Make.config
-
-build-all:
-	for platform in $(DOTNET_PLATFORMS); do \
-		echo "Building in $$platform"; \
-		$(MAKE) -C "$$platform" build; \
-	done
+include $(TOP)/tests/common/shared-dotnet-test.mk