gopls/internal/regtest/marker: skip on small machines

Running the marker tests seems to require significant disk space.

Change-Id: Ib1e4b0afc44d4b0afdb9a3666ed9418ce783c30b
Reviewed-on: https://go-review.googlesource.com/c/tools/+/489217
Run-TryBot: Bryan Mills <[email protected]>
Reviewed-by: Robert Findley <[email protected]>
TryBot-Result: Gopher Robot <[email protected]>

Author: Bryan C. Mills

gopls/internal/regtest/marker/marker_test.go

@@ -5,11 +5,18 @@
 package marker
 
 import (
+	"os"
 	"testing"
 
 	. "golang.org/x/tools/gopls/internal/lsp/regtest"
+	"golang.org/x/tools/internal/testenv"
 )
 
+func TestMain(m *testing.M) {
+	testenv.ExitIfSmallMachine()
+	os.Exit(m.Run())
+}
+
 // Note: we use a separate package for the marker tests so that we can easily
 // compare their performance to the existing marker tests in ./internal/lsp.