feat: improve gnoland txtar with coverage

Signed-off-by: gfanton <[email protected]>

gno.land/cmd/gnoland/integration_test.go

@@ -3,9 +3,24 @@ package main
 import (
 	"testing"
 
-	"github.com/gnolang/gno/gno.land/pkg/integration"
+	gnoland_integration "github.com/gnolang/gno/gno.land/pkg/integration"
+	gno_integration "github.com/gnolang/gno/gnovm/pkg/integration"
+	"github.com/stretchr/testify/require"
 )
 
 func TestTestdata(t *testing.T) {
-	integration.RunGnolandTestscripts(t, "testdata")
+	p := gno_integration.NewTestingParams(t, "testdata")
+
+	if coverdir, ok := gno_integration.ResolveCoverageDir(); ok {
+		err := gno_integration.SetupTestscriptsCoverage(&p, coverdir)
+		require.NoError(t, err)
+	}
+
+	// Set up gnoland for testscript
+	err := gnoland_integration.SetupGnolandTestscript(t, &p)
+	require.NoError(t, err)
+
+	// Run testscript
+	// XXX: We have to use seqshim for now as tests don't run well in parallel
+	gnoland_integration.RunSeqShimTestscripts(t, p)
 }