kvflag: add TestStringSlice_Set

helper/flag-kv/flag_strings_test.go

@@ -0,0 +1,32 @@
+package kvflag
+
+import (
+	"testing"
+
+	"github.com/google/go-cmp/cmp"
+)
+
+func TestStringSlice_Set(t *testing.T) {
+	type args struct {
+		values []string
+	}
+	tests := []struct {
+		name            string
+		s               StringSlice
+		args            args
+		wantStringSlice StringSlice
+	}{
+		{"basic", StringSlice{"hey", "yo"}, args{[]string{"how", "are", "you"}},
+			StringSlice{"hey", "yo", "how", "are", "you"}},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			for _, value := range tt.args.values {
+				tt.s.Set(value)
+			}
+			if diff := cmp.Diff(tt.s, tt.wantStringSlice); diff != "" {
+				t.Fatal(diff)
+			}
+		})
+	}
+}