[ci skip] Normalize queue priority numbers

background_test.go

@@ -9,6 +9,7 @@ import (
 	"time"
 
 	"github.com/go-redis/redis/v7"
+	"github.com/google/go-cmp/cmp"
 	"go.uber.org/goleak"
 )
 
@@ -39,3 +40,83 @@ func TestBackground(t *testing.T) {
 
 	bg.stop()
 }
+
+func TestGCD(t *testing.T) {
+	tests := []struct {
+		input []uint
+		want  uint
+	}{
+		{[]uint{6, 2, 12}, 2},
+		{[]uint{3, 3, 3}, 3},
+		{[]uint{6, 3, 1}, 1},
+		{[]uint{1}, 1},
+		{[]uint{1, 0, 2}, 1},
+		{[]uint{8, 0, 4}, 4},
+		{[]uint{9, 12, 18, 30}, 3},
+	}
+
+	for _, tc := range tests {
+		got := gcd(tc.input...)
+		if got != tc.want {
+			t.Errorf("gcd(%v) = %d, want %d", tc.input, got, tc.want)
+		}
+	}
+}
+
+func TestNormalizeQueueCfg(t *testing.T) {
+	tests := []struct {
+		input map[string]uint
+		want  map[string]uint
+	}{
+		{
+			input: map[string]uint{
+				"high":    100,
+				"default": 20,
+				"low":     5,
+			},
+			want: map[string]uint{
+				"high":    20,
+				"default": 4,
+				"low":     1,
+			},
+		},
+		{
+			input: map[string]uint{
+				"default": 10,
+			},
+			want: map[string]uint{
+				"default": 1,
+			},
+		},
+		{
+			input: map[string]uint{
+				"critical": 5,
+				"default":  1,
+			},
+			want: map[string]uint{
+				"critical": 5,
+				"default":  1,
+			},
+		},
+		{
+			input: map[string]uint{
+				"critical": 6,
+				"default":  3,
+				"low":      0,
+			},
+			want: map[string]uint{
+				"critical": 2,
+				"default":  1,
+				"low":      0,
+			},
+		},
+	}
+
+	for _, tc := range tests {
+		got := normalizeQueueCfg(tc.input)
+		if diff := cmp.Diff(tc.want, got); diff != "" {
+			t.Errorf("normalizeQueueCfg(%v) = %v, want %v; (-want, +got):\n%s",
+				tc.input, got, tc.want, diff)
+		}
+	}
+}