build: avoid compiling platformtest test list generator

This also fixes a deprecation warning.

.circleci/config.yml

@@ -202,12 +202,10 @@ jobs:
           key: quickcheck-<<parameters.goversion>>
 
       - run: make formatcheck
-      - run: make generate-platform-test-list
       - run: make zrepl-bin test-platform-bin
       - run: make vet
       - run: make lint
 
-      - run: rm -f artifacts/generate-platform-test-list
       - store_artifacts:
           path: artifacts
       - persist_to_workspace:

Makefile

@@ -228,7 +228,7 @@ _run_make_foreach_target_tuple:
 	$(MAKE) $(RUN_MAKE_FOREACH_TARGET_TUPLE_ARG) GOOS=illumos   GOARCH=amd64
 
 ##################### REGULAR TARGETS #####################
-.PHONY: lint test-go test-platform cover-merge cover-html vet zrepl-bin test-platform-bin generate-platform-test-list
+.PHONY: lint test-go test-platform cover-merge cover-html vet zrepl-bin test-platform-bin
 
 lint:
 	$(GO_ENV_VARS) $(GOLANGCI_LINT) run ./...
@@ -252,9 +252,6 @@ endif
 zrepl-bin:
 	$(GO_BUILD) -o "$(ARTIFACTDIR)/zrepl-$(ZREPL_TARGET_TUPLE)"
 
-generate-platform-test-list:
-	$(GO_BUILD) -o $(ARTIFACTDIR)/generate-platform-test-list ./platformtest/tests/gen
-
 COVER_PLATFORM_BIN_PATH := $(ARTIFACTDIR)/platformtest-cover-$(ZREPL_TARGET_TUPLE)
 cover-platform-bin:
 	$(GO_ENV_VARS) $(GO) test $(GO_BUILDFLAGS) \
@@ -312,7 +309,7 @@ cover-full:
 # not part of the build, must do that manually
 .PHONY: generate formatcheck format
 
-generate: generate-platform-test-list
+generate:
 	protoc -I=replication/logic/pdu --go_out=replication/logic/pdu --go-grpc_out=replication/logic/pdu replication/logic/pdu/pdu.proto
 	protoc -I=rpc/grpcclientidentity/example --go_out=rpc/grpcclientidentity/example/pdu --go-grpc_out=rpc/grpcclientidentity/example/pdu rpc/grpcclientidentity/example/grpcauth.proto
 	$(GO_ENV_VARS) $(GO) generate $(GO_BUILDFLAGS) -x ./...

platformtest/tests/gen/gen.go

@@ -21,7 +21,6 @@ func check(err error) {
 }
 
 type platformtestFuncDeclFinder struct {
-	pkg       *packages.Package
 	testFuncs []*ast.FuncDecl
 }
 
@@ -78,7 +77,7 @@ func main() {
 
 	pkgs, err := packages.Load(
 		&packages.Config{
-			Mode:  packages.LoadFiles,
+			Mode:  packages.NeedFiles,
 			Tests: false,
 		},
 		os.Args[1],
@@ -97,9 +96,7 @@ func main() {
 		s := token.NewFileSet()
 		a, err := parser.ParseFile(s, f, nil, parser.AllErrors)
 		check(err)
-		finder := &platformtestFuncDeclFinder{
-			pkg: p,
-		}
+		finder := &platformtestFuncDeclFinder{}
 		ast.Walk(finder, a)
 		tests = append(tests, finder.testFuncs...)
 	}

platformtest/tests/tests.go

@@ -13,4 +13,4 @@ func (c Case) String() string {
 	return runtime.FuncForPC(reflect.ValueOf(c).Pointer()).Name()
 }
 
-//go:generate ../../artifacts/generate-platform-test-list github.com/zrepl/zrepl/platformtest/tests
+//go:generate go run ./gen github.com/zrepl/zrepl/platformtest/tests