Fix some racy tests

Dockerfile

@@ -1,4 +1,5 @@
-FROM alpine:3.20
+FROM alpine:3.21
+RUN apk add --no-cache tzdata ca-certificates
 WORKDIR /
 COPY gmc gmc
 USER nobody

e2e/e2e_test.go

@@ -35,7 +35,7 @@ func TestMasterAgentAccept(t *testing.T) {
 	_, err = c.client.Post("/api/machines/accept-v1", bytes.NewBufferString(`{"host":"mycooltestagent"}`))
 	assert.NoError(t, err)
 
-	time.Sleep(200 * time.Millisecond)
+	c.waitForAccepted()
 	resp, err = c.client.Get("/machines")
 	assert.NoError(t, err)
 	body = getBody(t, resp.Body)
@@ -115,17 +115,22 @@ spec:
 	_, err = c.client.Post("/api/machines/accept-v1", bytes.NewBufferString(`{"host":"mycooltestagent"}`))
 	assert.NoError(t, err)
 
-	time.Sleep(2 * time.Second)
+	c.waitForAccepted()
 
 	// make sure we fetched file from http server with sha256 hash
-	content, err := os.ReadFile("/tmp/testfromurl")
+	var content []byte
+	WaitFor(t, time.Second*3, "wait for file", func() bool {
+		content, err = os.ReadFile("/tmp/testfromurl")
+		return len(content) != 0
+	})
 	assert.NoError(t, err)
 	assert.EqualValues(t, "the file content", content)
 
 	content, err = os.ReadFile("/tmp/test.systemd")
 	assert.NoError(t, err)
 	assert.EqualValues(t, "filecontentishere\n", content)
 
+	time.Sleep(time.Second)
 	cancel()
 	c.wg.Wait()
 }
@@ -184,12 +189,17 @@ spec:
 	_, err = c.client.Post("/api/machines/accept-v1", bytes.NewBufferString(`{"host":"mycooltestagent"}`))
 	assert.NoError(t, err)
 
-	time.Sleep(2 * time.Second)
+	c.waitForAccepted()
 
-	content, err := os.ReadFile("/tmp/test.systemd")
+	var content []byte
+	WaitFor(t, time.Second*3, "wait for file", func() bool {
+		content, err = os.ReadFile("/tmp/test.systemd")
+		return len(content) != 0
+	})
 	assert.NoError(t, err)
 	assert.EqualValues(t, "filecontentishere\n", content)
 
+	time.Sleep(time.Second)
 	cancel()
 	c.wg.Wait()
 }
@@ -223,7 +233,7 @@ spec:
 	_, err = c.client.Post("/api/machines/accept-v1", bytes.NewBufferString(`{"host":"mycooltestagent"}`))
 	assert.NoError(t, err)
 
-	time.Sleep(2 * time.Second)
+	c.waitForAccepted()
 
 	err = os.WriteFile("./adminConfig", []byte(fmt.Sprintf(`
 		{"masters":[{"name":"http://127.0.0.1:%s","zone":"zone1"}],
@@ -269,8 +279,7 @@ spec:
 
 	_, err = c.client.Post("/api/machines/accept-v1", bytes.NewBufferString(`{"host":"mycooltestagent"}`))
 	assert.NoError(t, err)
-
-	time.Sleep(2 * time.Second)
+	c.waitForAccepted()
 
 	err = os.WriteFile("./adminConfig", []byte(fmt.Sprintf(`
 		{"masters":[{"name":"http://127.0.0.1:%s","zone":"zone1"}],
@@ -315,8 +324,7 @@ spec:
 
 	_, err = c.client.Post("/api/machines/accept-v1", bytes.NewBufferString(`{"host":"mycooltestagent"}`))
 	assert.NoError(t, err)
-
-	time.Sleep(2 * time.Second)
+	c.waitForAccepted()
 
 	buf := &bytes.Buffer{}
 	logrus.SetOutput(buf)
@@ -361,16 +369,15 @@ spec:
 
 	_, err = c.client.Post("/api/machines/accept-v1", bytes.NewBufferString(`{"host":"mycooltestagent"}`))
 	assert.NoError(t, err)
-
-	time.Sleep(1 * time.Second)
+	c.waitForAccepted()
 
 	err = os.WriteFile("./adminConfig", []byte(fmt.Sprintf(`
 		{"masters":[{"name":"http://127.0.0.1:%s","zone":"zone1"}],
 		"token":"%s"}`, c.master.WsPort, c.client.Token)), 0666)
 	assert.NoError(t, err)
 
 	var content []byte
-	WaitFor(t, 1*time.Second, "file to have content from git", func() bool {
+	WaitFor(t, 2*time.Second, "file to have content from git", func() bool {
 		content, err = os.ReadFile("./newfile.txt")
 		return err == nil
 	})
@@ -406,7 +413,7 @@ spec:
 	out := stdout()
 	assert.Contains(t, out, "apply file:  newspec.yml")
 
-	WaitFor(t, 1*time.Second, "file to have content from apply", func() bool {
+	WaitFor(t, 2*time.Second, "file to have content from apply", func() bool {
 		content, err = os.ReadFile("./newfile.txt")
 		assert.NoError(t, err)
 		return string(content) == "filecontentishere\n"
@@ -441,7 +448,7 @@ spec:
 	err = a.Apply(ctx, []string{"newspec.yml"})
 	assert.NoError(t, err)
 
-	WaitFor(t, 1*time.Second, "file to have content from git again", func() bool {
+	WaitFor(t, 2*time.Second, "file to have content from git again", func() bool {
 		content, err = os.ReadFile("./newfile.txt")
 		assert.NoError(t, err)
 		return string(content) == "itsfromgit\n"

e2e/utils_test.go

@@ -7,6 +7,7 @@ import (
 	"net"
 	"os"
 	"strconv"
+	"strings"
 	"sync"
 	"testing"
 	"time"
@@ -21,12 +22,13 @@ import (
 )
 
 type testWrapper struct {
-	client    *authedhttpclient.Client
-	master    *master.Master
-	agent     *agent.Agent
-	commander *mocks.MockCommander
-	wg        *sync.WaitGroup
-	redis     *mocks.MockCmdable
+	client          *authedhttpclient.Client
+	master          *master.Master
+	agent           *agent.Agent
+	commander       *mocks.MockCommander
+	wg              *sync.WaitGroup
+	redis           *mocks.MockCmdable
+	waitForAccepted func()
 }
 
 func initMasterAgent(t *testing.T, ctx context.Context) testWrapper {
@@ -85,6 +87,13 @@ func initMasterAgent(t *testing.T, ctx context.Context) testWrapper {
 		commander: mockedCommander,
 		wg:        wg,
 		redis:     redisMock,
+		waitForAccepted: func() {
+			WaitFor(t, time.Second*2, "wait for accepted", func() bool {
+				resp, err := client.Get("/api/machines-v1")
+				b := getBody(t, resp.Body)
+				return err == nil && strings.Contains(b, `"Accepted":true`) && strings.Contains(b, `"Online":true`)
+			})
+		},
 	}
 }
 func freePort() (port int, err error) {
@@ -141,6 +150,7 @@ func captureStdout() func() string {
 		}
 	}
 */
+
 func WaitFor(t *testing.T, timeout time.Duration, msg string, ok func() bool) {
 	end := time.Now().Add(timeout)
 	for {