ci/gha: run tests as root

Some tests require root -- give it to them.

Unfortunately there's no sudo on Windows, so add some ifs.

[v2: add -E PATH=$PATH, otherwise sudo will use stock go]
[v3: add ~/.cache fixup]
[v4: add sudotest make target and use it]

Signed-off-by: Kir Kolyshkin <kolyshkin@gmail.com>

.github/workflows/test.yml

@@ -19,7 +19,11 @@ jobs:
     - name: Cross build
       if: ${{ runner.os == 'Linux' }}
       run: make cross
-    - name: Test
+    - name: Test (!windows)
+      if: ${{ runner.os != 'Windows' }}
+      run: make sudotest
+    - name: Test (windows)
+      if: ${{ runner.os == 'Windows' }}
       run: make test
 
   # some features, like openat2, require a newer kernel
@@ -39,4 +43,4 @@ jobs:
         run: ssh default 'sh -exc "uname -a && df -T"'
 
       - name: tests
-        run: ssh default 'cd /vagrant && sudo -E PATH=$PATH make test'
+        run: ssh default 'cd /vagrant && make sudotest'

Makefile

@@ -3,6 +3,7 @@ PACKAGES ?= mountinfo mount symlink
 BINDIR ?= _build/bin
 CROSS ?= linux/arm linux/arm64 linux/ppc64le linux/s390x \
 	freebsd/amd64 openbsd/amd64 darwin/amd64 darwin/arm64 windows/amd64
+SUDO ?= sudo -E PATH=$$PATH
 
 .PHONY: all
 all: lint test cross
@@ -13,6 +14,14 @@ test:
 		(cd $$p && go test -v .); \
 	done
 
+.PHONY: sudotest
+sudotest:
+	$(SUDO) -n true # check that sudo works without a password
+	for p in $(PACKAGES); do \
+		(cd $$p && go test -c && \
+		$(SUDO) ./$${p}.test -test.v); \
+	done
+
 .PHONY: lint
 lint: $(BINDIR)/golangci-lint
 	$(BINDIR)/golangci-lint version