extract number of errors and pod directory

pkg/cleaner/cleaner_test.go

@@ -1 +1,50 @@
 package cleaner
+
+import (
+	"github.com/cyrilix/pod-cleaner/pkg/monitor"
+	"testing"
+)
+
+func TestPodWatcher_Watch(t *testing.T) {
+	type fields struct {
+		logfile string
+	}
+	tests := []struct {
+		name         string
+		fields       fields
+		wantPodDir   string
+		wantNumError int
+	}{
+		{
+			name: "one error in file",
+			fields: fields{
+				logfile: "test_data/one-error.log",
+			},
+			wantPodDir:   "/var/lib/kubelet/pods/1d4bfc07-3469-4eaa-992f-6d23c17f3aee",
+			wantNumError: 1,
+		},
+		{
+			name: "no error",
+			fields: fields{
+				logfile: "test_data/no-error.log",
+			},
+			wantPodDir:   "",
+			wantNumError: 0,
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			w := NewPodWatcher(tt.fields.logfile)
+			w.m = monitor.New(monitor.WithTailFollow(false), monitor.WithReOpen(false))
+			w.Watch()
+			gotNumErr := w.GetNumErrors()
+			if gotNumErr != tt.wantNumError {
+				t.Errorf("PodWatcher_Watch(), bad numErrors found: %v, want %v", gotNumErr, tt.wantNumError)
+			}
+			gotPodDir := w.GetPodDirInError()
+			if gotPodDir != tt.wantPodDir {
+				t.Errorf("PodWatcher_Watch(), bad pod directory found: %v, want %v", gotPodDir, tt.wantPodDir)
+			}
+		})
+	}
+}