Use coverpkg=./... to pull in coverage of more files (#1364)

by default, Go coverage reports ignore files in directories with no
tests. Setting coverpkg=./... tells go that you want coverage on all go
files under the current directory

Makefile

@@ -20,9 +20,9 @@ test::
 	@mkdir -p bin
 	go build -o bin ./internal/testing/pulumi-terraform-bridge-test-provider
 	PULUMI_TERRAFORM_BRIDGE_TEST_PROVIDER=$(shell pwd)/bin/pulumi-terraform-bridge-test-provider \
-		go test -v -count=1 -coverprofile="coverage.txt" -timeout 2h -parallel ${TESTPARALLELISM} ./...
-	cd testing && go test -v -count=1 -coverprofile="coverage.txt" ./...
-	cd pkg/tests && go test -v -count=1 -coverprofile="coverage.txt" -timeout 2h -parallel ${TESTPARALLELISM} ./...
+		go test -v -count=1 -coverprofile="coverage.txt" -coverpkg=./... -timeout 2h -parallel ${TESTPARALLELISM} ./...
+	cd testing && go test -v -count=1 -coverprofile="coverage.txt" -coverpkg=./... ./...
+	cd pkg/tests && go test -v -count=1 -coverprofile="coverage.txt" -coverpkg=./... -timeout 2h -parallel ${TESTPARALLELISM} ./...
 
 	# Unit and integration tests for the muxer.
 	cd x/muxer && go test -v -count=1 ./...

pf/Makefile

@@ -8,8 +8,8 @@ build.tests::
 test::	test.unit test.integration
 
 test.unit::
-	go test -v -count=1 -cover -timeout 2h -parallel ${TESTPARALLELISM} ./...
-	cd tests && go test -v -count=1 -cover -timeout 2h -parallel ${TESTPARALLELISM} # tests have a separte go.mod
+	go test -v -count=1 -cover -coverpkg=./... -coverprofile ./coverage.out -timeout 2h -parallel ${TESTPARALLELISM} ./...
+	cd tests && go test -v -count=1 -cover -coverpkg=./... -coverprofile ./coverage.out -timeout 2h -parallel ${TESTPARALLELISM} # tests have a separte go.mod
 
 test.integration::
 	cd tests/integration && go test -v -count=1 -timeout 2h -parallel ${TESTPARALLELISM}