public void GetValue_WhenNoValuesFound_ShouldReturnDefaultValue()
{
const int defaultValue = 1;
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key") } //no data
};
var provider = new ValueProvider(sources);
var value = provider.GetValue("key", defaultValue);
value.ShouldBe(defaultValue);
}
public void TryGetValue_WhenValueFound_AndValueIsDefaultT_ShouldReturnTrue()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key", default(int)) }
};
var provider = new ValueProvider(sources);
int outVal;
var result = provider.TryGetValue("key", out outVal);
result.ShouldBe(true);
}
public void TryGetValue_WhenNoDataFound_ShouldReturnFalse()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key") } //no data
};
var provider = new ValueProvider(sources);
int outVal;
var result = provider.TryGetValue("key", out outVal);
result.ShouldBe(false);
}
public void GetValue_GivenMultipleValueSources_IncludingSourcesWithNoRelevantData_ShouldReturnFirstValueFromFirstValueSource()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key") }, //no data
{ "source2", MockValueSource.With("key", 3) },
{ "source3", MockValueSource.With("key", 9, 20, 3) }
};
var provider = new ValueProvider(sources);
var value = provider.GetValue <int>("key");
value.ShouldBe(3);
}
public void GetValue_GivenMultipleValueSources_ShouldReturnFirstValueFromFirstValueSource()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key", 2, 4, 0) },
{ "source2", MockValueSource.With("key", 3) },
{ "source3", MockValueSource.With("key", 9, 20, 3) }
};
var provider = new ValueProvider(sources);
var value = provider.GetValue <int>("key");
value.ShouldBe(2);
}
public void GetValues_GivenMultipleValueSources_ShouldReturnAllValuesFromAllSources()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key", 2, 4, 0) },
{ "source2", MockValueSource.With("key", 3) },
{ "source3", MockValueSource.With("key", 9, 20, 3) }
};
var provider = new ValueProvider(sources);
var values = provider.GetValues <int>("key");
values.ShouldBe(new[] { 2, 4, 0, 3, 9, 20, 3 });
}
public void Preferring_GivenPreferredSources_ShouldCreateProviderThatContainsAllValueSources()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key", 1) },
{ "source2", MockValueSource.With("key", 2) },
{ "source3", MockValueSource.With("key", 3) }
};
var provider = new ValueProvider(sources);
var value = provider.Preferring("source3").GetValues <int>("key");
value.ShouldBe(new[] { 1, 2, 3 }, ignoreOrder: true);
}
public void Preferring_GivenPreferredSources_ShouldCreateProviderThatChecksPreferredSourcesForValuesBeforeOthers()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key", 1) },
{ "source2", MockValueSource.With("key", 2) },
{ "source3", MockValueSource.With("key", 3) }
};
var provider = new ValueProvider(sources);
var value = provider.Preferring("source3").GetValue <int>("key");
value.ShouldBe(3);
}
public void Including_ShouldReturnNewObject()
{
var sources = new Dictionary <string, IValueSource>()
{
{ "source1", MockValueSource.With("key") },
{ "source2", MockValueSource.With("key") },
{ "source3", MockValueSource.With("key") }
};
var provider = new ValueProvider(sources);
var newProvider = provider.Excluding("source1");
newProvider.ShouldNotBe(provider);
}
public void TryGetValue_WhenValueFound_ShouldOutputValue()
{
var sources = new Dictionary <string, IValueSource>
{
{ "source1", MockValueSource.With("key", 1) }
};
var provider = new ValueProvider(sources);
int outVal;
provider.TryGetValue("key", out outVal);
outVal.ShouldBe(1);
}