Adding test to make sure HEAD can run on VM created by latest release

test.sh

@@ -20,9 +20,9 @@ REPO_PATH="k8s.io/minikube"
 
 # Check for python on host, and use it if possible, otherwise fall back on python dockerized
 if [[ -f $(which python 2>&1) ]]; then
-	PYTHON="python"
+    PYTHON="python"
 else
-	PYTHON="docker run --rm -it -v $(pwd):/minikube -w /minikube python python"
+    PYTHON="docker run --rm -it -v $(pwd):/minikube -w /minikube python python"
 fi
 
 
@@ -51,9 +51,9 @@ set +e
 files=$(gofmt -l -s . | grep -v ${ignore})
 set -e
 if [[ $files ]]; then
-  gofmt -d ${files}
-  echo "Gofmt errors in files: $files"
-  exit 1
+    gofmt -d ${files}
+    echo "Gofmt errors in files: $files"
+    exit 1
 fi
 
 # Check boilerplate
@@ -64,8 +64,8 @@ set +e
 files=$(${PYTHON} ${BOILERPLATEDIR}/boilerplate.py --rootdir . --boilerplate-dir ${BOILERPLATEDIR} | grep -v $ignore)
 set -e
 if [[ ! -z ${files} ]]; then
-	echo "Boilerplate missing in: ${files}."
-	exit 1
+    echo "Boilerplate missing in: ${files}."
+    exit 1
 fi
 
 echo "Checking releases.json schema"

test/integration/version_upgrade_test.go

@@ -0,0 +1,88 @@
+/*
+Copyright 2019 The Kubernetes Authors All rights reserved.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package integration
+
+import (
+	"io"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"os/exec"
+	"runtime"
+	"testing"
+
+	"github.com/docker/machine/libmachine/state"
+	"github.com/pkg/errors"
+	"k8s.io/minikube/test/integration/util"
+)
+
+func TestVersionUpgrade(t *testing.T) {
+	currentRunner := NewMinikubeRunner(t)
+	currentRunner.RunCommand("delete", true)
+	currentRunner.CheckStatus(state.None.String())
+
+	isoName := "minikube-linux-amd64"
+	if runtime.GOOS == "darwin" {
+		isoName = "minikube-darwin-amd64"
+	} else if runtime.GOOS == "windows" {
+		isoName = "minikube-windows-amd64.exe"
+	}
+	// Grab latest release binary
+	url := "https://storage.googleapis.com/minikube/releases/latest/" + isoName
+	resp, err := http.Get(url)
+	if err != nil {
+		t.Fatal(errors.Wrap(err, "Failed to get latest release binary"))
+	}
+	defer resp.Body.Close()
+
+	iso, err := ioutil.TempFile("", isoName)
+	if err != nil {
+		t.Fatal(errors.Wrap(err, "Failed to create binary file"))
+	}
+	defer os.Remove(iso.Name())
+
+	_, err = io.Copy(iso, resp.Body)
+	if err != nil {
+		t.Fatal(errors.Wrap(err, "Failed to populate iso file"))
+	}
+	if err := iso.Close(); err != nil {
+		t.Fatal(errors.Wrap(err, "Failed to close iso"))
+	}
+
+	if runtime.GOOS != "windows" {
+		if err := exec.Command("chmod", "+x", iso.Name()).Run(); err != nil {
+			t.Fatal(errors.Wrap(err, "Failed to make binary executable."))
+		}
+	}
+
+	latestRunner := util.MinikubeRunner{
+		Args:       currentRunner.Args,
+		BinaryPath: iso.Name(),
+		StartArgs:  currentRunner.StartArgs,
+		MountArgs:  currentRunner.MountArgs,
+		T:          t,
+	}
+	latestRunner.Start()
+	latestRunner.CheckStatus(state.Running.String())
+	latestRunner.RunCommand("stop", true)
+	latestRunner.CheckStatus(state.Stopped.String())
+
+	currentRunner.Start()
+	currentRunner.CheckStatus(state.Running.String())
+	currentRunner.RunCommand("delete", true)
+	currentRunner.CheckStatus(state.None.String())
+}