Rank log: inactive ranks (Guardian) count as promotions to and from, demotion when lost; Guardian is staff

internal/web/public_test.go

@@ -0,0 +1,25 @@
+package web
+
+import "testing"
+
+func TestInactiveKind(t *testing.T) {
+	guardian := &rankView{Name: "#rank/guardian", Inactive: true}
+	mod := &rankView{Name: "#rank/mod"}
+	owner := &rankView{Name: "#rank/owner"}
+	for _, c := range []struct {
+		kind     string
+		old, new *rankView
+		want     string
+	}{
+		{"demoted", owner, guardian, "promoted"},
+		{"promoted", guardian, mod, "promoted"},
+		{"removed", guardian, nil, "demoted"},
+		{"added", nil, guardian, "added"},
+		{"demoted", owner, mod, "demoted"},
+		{"removed", mod, nil, "removed"},
+	} {
+		if got := inactiveKind(c.kind, c.old, c.new); got != c.want {
+			t.Errorf("%v -> %v: got %s, want %s", c.old, c.new, got, c.want)
+		}
+	}
+}