Make test less reliant on timing

internal/pkg/agent/install/progress_test.go

@@ -5,6 +5,7 @@
 package install
 
 import (
+	"regexp"
 	"testing"
 	"time"
 
@@ -44,18 +45,18 @@ func TestProgress(t *testing.T) {
 	t.Run("single_step_delayed_failure", func(t *testing.T) {
 		w := newTestWriter()
 		pt := NewProgressTracker(w)
-		pt.SetTickInterval(40 * time.Millisecond) // to speed up testing
+		pt.SetTickInterval(10 * time.Millisecond) // to speed up testing
 		pt.DisableRandomizedTickIntervals()
 
 		pt.Start()
 
 		pt.StepStart("step 1 starting")
-		time.Sleep(90 * time.Millisecond) // to simulate work being done
+		time.Sleep(15 * time.Millisecond) // to simulate work being done
 		pt.StepFailed()
 
 		pt.Stop()
 
-		require.Equal(t, "step 1 starting..... FAILED\n", string(w.buf))
+		require.Regexp(t, regexp.MustCompile(`step 1 starting\.{3}\.+ FAILED\n`), string(w.buf))
 	})
 
 	t.Run("multi_step_immediate_success", func(t *testing.T) {
@@ -78,34 +79,34 @@ func TestProgress(t *testing.T) {
 	t.Run("multi_step_delayed_success", func(t *testing.T) {
 		w := newTestWriter()
 		pt := NewProgressTracker(w)
-		pt.SetTickInterval(40 * time.Millisecond) // to speed up testing
+		pt.SetTickInterval(10 * time.Millisecond) // to speed up testing
 		pt.DisableRandomizedTickIntervals()
 
 		pt.Start()
 
 		pt.StepStart("step 1 starting")
-		time.Sleep(210 * time.Millisecond) // to simulate work being done
+		time.Sleep(55 * time.Millisecond) // to simulate work being done
 		pt.StepSucceeded()
 		pt.StepStart("step 2 starting")
-		time.Sleep(90 * time.Millisecond) // to simulate work being done
+		time.Sleep(25 * time.Millisecond) // to simulate work being done
 		pt.StepSucceeded()
 
 		pt.Stop()
 
-		require.Equal(t, "step 1 starting........ DONE\nstep 2 starting..... DONE\n", string(w.buf))
+		require.Regexp(t, regexp.MustCompile(`step 1 starting\.{3}\.+ DONE\nstep 2 starting\.{3}\.+ DONE`), string(w.buf))
 	})
 
-	t.Run("single_step_delay_after_success", func(t *testing.T) {
+	t.Run("single_step_delay_after_failed", func(t *testing.T) {
 		w := newTestWriter()
 		pt := NewProgressTracker(w)
-		pt.SetTickInterval(40 * time.Millisecond) // to speed up testing
+		pt.SetTickInterval(10 * time.Millisecond) // to speed up testing
 		pt.DisableRandomizedTickIntervals()
 
 		pt.Start()
 
 		pt.StepStart("step 1 starting")
 		pt.StepFailed()
-		time.Sleep(90 * time.Millisecond) // to simulate work being done
+		time.Sleep(15 * time.Millisecond)
 
 		pt.Stop()