示例#1
0
        public async Task Instance_GivenUnexpired_ShouldRefreshAndReturnOldValue()
        {
            // Arrange.
            const int cacheLifetimeInSeconds = 5;

            string[] values     = { "abc", "def" };
            int      valueIndex = 0;

            var time = Substitute.For <IDateTimeService>();
            var timeAtInstantiation = new DateTime();
            var refreshable         = new Refreshable();

            time
            .Now
            .Returns(timeAtInstantiation);

            var testObject = new TimeBasedAutoRefresher <Refreshable>(
                refreshable,
                time,
                cacheLifetimeInSeconds,
                () => refreshable.Refresh(values[valueIndex++]));

            await testObject.Instance();

            time
            .Now
            .Returns(timeAtInstantiation.AddSeconds(cacheLifetimeInSeconds - 1));

            // Act.
            Refreshable result = await testObject.Instance();

            // Assert.
            Assert.AreEqual(values[0], result.Value);
        }
示例#2
0
        public async Task Instance_GivenFirstCall_ShouldRefreshAndReturnValue()
        {
            // Arrange.
            const int    cacheLifetimeInSeconds = 5;
            const string value = "abc";

            var time = Substitute.For <IDateTimeService>();
            var timeAtInstantiation = new DateTime();
            var refreshable         = new Refreshable();

            time
            .Now
            .Returns(timeAtInstantiation);

            var testObject = new TimeBasedAutoRefresher <Refreshable>(
                refreshable,
                time,
                cacheLifetimeInSeconds,
                () => refreshable.Refresh(value));

            time
            .Now
            .Returns(timeAtInstantiation.AddSeconds(cacheLifetimeInSeconds - 1));

            // Act.
            Refreshable result = await testObject.Instance();

            // Assert.
            Assert.AreEqual(value, result.Value);
        }