Add package helloworld for docker test

gnovm/tests/integ/helloworld/gno.mod

@@ -0,0 +1,5 @@
+module gno.land/r/demo/helloworld
+
+require (
+        "gno.land/r/demo/helloworld/world" v0.0.0-latest
+)

gnovm/tests/integ/helloworld/hello.gno

@@ -0,0 +1,7 @@
+package helloworld
+
+import "gno.land/r/demo/helloworld/world"
+
+func SayHelloWorld() string {
+	return "Hello " + world.World()
+}

gnovm/tests/integ/helloworld/world/gno.mod

@@ -0,0 +1,4 @@
+module gno.land/r/demo/helloworld/world
+
+// TODO: this file should not exist. 
+// This is a temporary workaround. Until https://github.com/gnolang/gno/issues/852

gnovm/tests/integ/helloworld/world/world.gno

@@ -0,0 +1,5 @@
+package world
+
+func World() string {
+	return "world"
+}

misc/docker-integration/integration_test.go

@@ -59,27 +59,38 @@ func runSuite(t *testing.T, tempdir string) {
 	require.True(t, acc.Coins.IsAllGTE(minCoins),
 		"test1 account coins expected at least %s, got %s", minCoins, acc.Coins)
 
-	// add gno.land/r/demo/tests package as tests_copy
+	// add gno.land/r/demo/helloworld/world
+	// TODO: it should be added automatically by its parent package `gno.land/r/demo/helloworld`.
 	dockerExec(t,
 		`echo 'pass' | gnokey maketx addpkg -insecure-password-stdin \
 			-gas-fee 1000000ugnot -gas-wanted 2000000 \
 			-broadcast -chainid dev \
-			-pkgdir /opt/gno/src/examples/gno.land/r/demo/tests/ \
-			-pkgpath gno.land/r/demo/tests_copy \
+			-pkgdir /opt/gno/src/gnovm/tests/integ/helloworld/world/ \
 			-deposit 100000000ugnot \
 			test1`,
 	)
-	// assert gno.land/r/demo/tests_copy has been added
+
+	// add gno.land/r/demo/helloworld
+	dockerExec(t,
+		`echo 'pass' | gnokey maketx addpkg -insecure-password-stdin \
+			-gas-fee 1000000ugnot -gas-wanted 2000000 \
+			-broadcast -chainid dev \
+			-pkgdir /opt/gno/src/gnovm/tests/integ/helloworld/ \
+			-deposit 100000000ugnot \
+			test1`,
+	)
+
+	// assert gno.land/r/demo/helloworld has been added
 	var qfuncs vm.FunctionSignatures
-	dockerExec_gnokeyQuery(t, `-data "gno.land/r/demo/tests_copy" vm/qfuncs`, &qfuncs)
-	require.True(t, len(qfuncs) > 0, "gno.land/r/demo/tests_copy not added")
+	dockerExec_gnokeyQuery(t, `-data "gno.land/r/demo/helloworld" vm/qfuncs`, &qfuncs)
+	require.True(t, len(qfuncs) > 0, "gno.land/r/demo/helloworld not added")
 
 	// broadcast a package TX
 	dockerExec(t,
 		`echo 'pass' | gnokey maketx call -insecure-password-stdin \
 			-gas-fee 1000000ugnot -gas-wanted 2000000 \
 			-broadcast -chainid dev \
-			-pkgpath "gno.land/r/demo/tests_copy" -func "InitTestNodes" \
+			-pkgpath "gno.land/r/demo/helloworld" -func "SayHelloWorld" \
 			test1`,
 	)
 }