diff --git a/internal/pause.go b/internal/pause.go
index 63b0c18..45814f0 100644
--- a/internal/pause.go
+++ b/internal/pause.go
@@ -8,7 +8,17 @@ import (
 	"github.com/bruhtus/simo/utils"
 )
 
-func Pause(statusPath string) {
+func Pause(
+	now func() time.Time,
+	statusPath string,
+) {
+	// Substitute this in test.
+	// Reference:
+	// https://stackoverflow.com/a/25791617
+	if now == nil {
+		now = time.Now
+	}
+
 	var (
 		status    = utils.ReadStatusFile(statusPath)
 		isExpired = utils.DetermineIsExpired(status.EndTime)
@@ -19,21 +29,9 @@ func Pause(statusPath string) {
 		newPausePoint = fmt.Sprintf("%dm%ds", minutes, seconds)
 	)
 
-	if isExpired {
-		if status.PausePoint != nil {
-			status.PausePoint = nil
-
-			statusJSON, err := json.Marshal(status)
-			utils.CheckError(err)
-
-			utils.WriteStatusFile(statusPath, statusJSON)
-		}
-		return
-	}
-
 	if status.PausePoint != nil {
 		remainingDuration := utils.ParseDuration(*status.PausePoint)
-		newEndTime := time.Now().Add(remainingDuration)
+		newEndTime := now().Add(remainingDuration)
 
 		status.PausePoint = nil
 		status.EndTime = newEndTime
@@ -45,6 +43,10 @@ func Pause(statusPath string) {
 		return
 	}
 
+	if isExpired {
+		return
+	}
+
 	status.PausePoint = &newPausePoint
 
 	statusJSON, err := json.Marshal(status)
diff --git a/internal/pause_test.go b/internal/pause_test.go
index ae70aea..fe96af2 100644
--- a/internal/pause_test.go
+++ b/internal/pause_test.go
@@ -28,6 +28,14 @@ func TestPause(t *testing.T) {
 		isNotifyInput           bool
 		isNotifyOutput          bool
 	}{
+		{
+			time.Duration(-1 * time.Second), "",
+			false, false,
+		},
+		{
+			time.Duration(0 * time.Second), "",
+			false, false,
+		},
 		{
 			time.Duration(1 * time.Second), "0m1s",
 			true, true,
@@ -37,7 +45,11 @@ func TestPause(t *testing.T) {
 			false, false,
 		},
 		{
-			time.Duration(1 * time.Hour), "60m0s",
+			time.Duration(60 * time.Minute), "60m0s",
+			true, true,
+		},
+		{
+			time.Duration(90 * time.Minute), "90m0s",
 			true, true,
 		},
 	}
@@ -54,12 +66,20 @@ func TestPause(t *testing.T) {
 				}
 
 				utils.TestSetupStatusFile(t, status, file)
-				scmd.Pause(file.Name())
+				scmd.Pause(nil, file.Name())
 
 				resultJSON := utils.ReadStatusFile(file.Name())
-				if resultJSON.PausePoint == nil {
+
+				if resultJSON.PausePoint == nil &&
+					tt.remainingDurationOutput != "" {
+					t.Errorf("Got unexpected nil")
+				}
+
+				if resultJSON.PausePoint != nil &&
+					*resultJSON.PausePoint != tt.remainingDurationOutput {
 					t.Errorf(
-						"Got nil, want %s",
+						"Got %s, want %s",
+						*resultJSON.PausePoint,
 						tt.remainingDurationOutput,
 					)
 				}
@@ -75,3 +95,87 @@ func TestPause(t *testing.T) {
 		)
 	}
 }
+
+func TestResume(t *testing.T) {
+	dirPath := t.TempDir()
+	file := utils.TestSetupTempFile(t, dirPath)
+
+	t.Cleanup(func() {
+		err := file.Close()
+		if err != nil {
+			t.Fatalf(
+				"Failed to close file: %v",
+				err,
+			)
+		}
+	})
+
+	remainingDurationCases := []struct {
+		pausePoint      string
+		endTime         time.Duration
+		expectedEndTime time.Duration
+	}{
+		{
+			"0m1s",
+			time.Duration(-1 * time.Second),
+			time.Duration(1 * time.Second),
+		},
+		{
+			"0m10s",
+			time.Duration(-10 * time.Second),
+			time.Duration(10 * time.Second),
+		},
+		{
+			"1m0s",
+			time.Duration(-1 * time.Minute),
+			time.Duration(1 * time.Minute),
+		},
+		{
+			"60m0s",
+			time.Duration(-60 * time.Minute),
+			time.Duration(60 * time.Minute),
+		},
+		{
+			"90m0s",
+			time.Duration(-90 * time.Minute),
+			time.Duration(90 * time.Minute),
+		},
+	}
+
+	for _, tt := range remainingDurationCases {
+		t.Run(
+			tt.endTime.String(),
+			func(t *testing.T) {
+				endTime := time.Now().Add(tt.endTime)
+				expectedEndTime := endTime.Add(tt.expectedEndTime)
+
+				status := utils.Status{
+					State:      utils.StateFocus,
+					IsNotify:   false,
+					PausePoint: &tt.pausePoint,
+					EndTime:    endTime,
+				}
+
+				utils.TestSetupStatusFile(t, status, file)
+
+				// Substitute the time.Now() result.
+				now := func() time.Time {
+					return endTime
+				}
+
+				scmd.Pause(now, file.Name())
+				resultJSON := utils.ReadStatusFile(file.Name())
+
+				comparation := expectedEndTime.Compare(resultJSON.EndTime)
+
+				if comparation != 0 {
+					t.Errorf(
+						"Got %v, want %v",
+						endTime,
+						expectedEndTime,
+					)
+				}
+			},
+		)
+	}
+}
diff --git a/main.go b/main.go
index 5385957..09c7953 100644
--- a/main.go
+++ b/main.go
@@ -93,7 +93,7 @@ func main() {
 		utils.CheckError(err)
 
 	case "pause":
-		scmd.Pause(statusPath)
+		scmd.Pause(nil, statusPath)
 
 	default:
 		utils.HelpUsage()