/// <summary>
/// A helper function for evidence messages when the output of the factor is observed.
/// </summary>
/// <param name="str">The observed value of <c>str</c>.</param>
/// <param name="format">The message from <c>format</c>.</param>
/// <param name="args">The message from <c>args</c>.</param>
/// <param name="expectedLogEvidence">
/// The expected log-evidence if the format string is required to contain placeholders for all arguments.
/// </param>
/// <param name="expectedLogEvidenceWithMissingPlaceholders">
/// The expected log-evidence if the format string may not contain placeholders for some arguments.
/// </param>
private static void TestEvidence(
string str,
StringDistribution format,
StringDistribution[] args,
double expectedLogEvidence,
double expectedLogEvidenceWithMissingPlaceholders)
{
const double LogEvidenceEps = 1e-6;
string[] argNames = GetDefaultArgumentNames(args.Length);
Assert.Equal(
expectedLogEvidence,
StringFormatOp_RequireEveryPlaceholder_NoArgumentNames.LogEvidenceRatio(str, format, args),
LogEvidenceEps);
Assert.Equal(
expectedLogEvidence,
StringFormatOp_RequireEveryPlaceholder.LogEvidenceRatio(str, format, args, argNames),
LogEvidenceEps);
Assert.Equal(
expectedLogEvidenceWithMissingPlaceholders,
StringFormatOp_AllowMissingPlaceholders_NoArgumentNames.LogEvidenceRatio(str, format, args),
LogEvidenceEps);
Assert.Equal(
expectedLogEvidenceWithMissingPlaceholders,
StringFormatOp_AllowMissingPlaceholders.LogEvidenceRatio(str, format, args, argNames),
LogEvidenceEps);
}
/// <summary>
/// A helper function for evidence messages when the output of the factor is not observed.
/// </summary>
/// <param name="str">The message to <c>str</c>.</param>.
private static void TestEvidence(StringDistribution str)
{
Assert.Equal(0, StringFormatOp_RequireEveryPlaceholder_NoArgumentNames.LogEvidenceRatio(str));
Assert.Equal(0, StringFormatOp_RequireEveryPlaceholder.LogEvidenceRatio(str));
Assert.Equal(0, StringFormatOp_AllowMissingPlaceholders_NoArgumentNames.LogEvidenceRatio(str));
Assert.Equal(0, StringFormatOp_AllowMissingPlaceholders.LogEvidenceRatio(str));
}