search_test.go: Test SearchZones, SortedNames, and Print (see d6c5408)

search_test.go

@@ -0,0 +1,33 @@
+/**
+ * This file is part of tz.
+ *
+ * tz is free software: you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License as published by the Free
+ * Software Foundation, either version 3 of the License, or (at your
+ * option) any later version.
+ *
+ * tz is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
+ * License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with tz.  If not, see <https://www.gnu.org/licenses/>.
+ **/
+package main
+
+import (
+	"fmt"
+	"strings"
+	"testing"
+)
+
+func TestSearchAndPrintFilter(t *testing.T) {
+	var builder strings.Builder
+	SearchZones(strings.ToLower("UTC")).Print(&builder)
+	observed := builder.String()
+	expected := "  UTC (+00:00) :: UTC\n"
+	if !strings.Contains(observed, expected) {
+		t.Errorf(fmt.Sprintf("Missing '%v' in '%v'", strings.TrimSpace(expected), strings.TrimSpace(observed)))
+	}
+}