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https://issues.apache.org/jira/browse/DAFFODIL-752?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Josh Adams reassigned DAFFODIL-752:
-----------------------------------
Assignee: Josh Adams
> Assertion failure message should show value that led to failure.
> ----------------------------------------------------------------
>
> Key: DAFFODIL-752
> URL: https://issues.apache.org/jira/browse/DAFFODIL-752
> Project: Daffodil
> Issue Type: Improvement
> Components: Back End
> Affects Versions: s10
> Reporter: Michael Beckerle
> Assignee: Josh Adams
> Priority: Major
> Fix For: s11-M1, s11
>
> Time Spent: 20m
>
> We need to show the infoset element as part of the assertion failure message,
> specifically for an assertion on an element of simple type.
> (For an assert on a complex type element, or a sequence or choice, it's
> trickier. There I think we could show the infoset object, but as in many
> places where we need to show this, we need to be able to elide unnecessary
> substructure or parent structure. Otherwise these will get big and unweildy.
> - separate JIRA issue should we decide to go there.)
> -------------------------------------
> From: Garriss Jr., James P. [jgarr...@mitre.org]
> Sent: Friday, June 07, 2013 10:23 AM
> To: Mike Beckerle; Stephen Lawrence
> Subject: [daffodil 0.10] Error message improvement suggestion
> I have this simple input:
>
> MIME-Version: dog
>
> Obviously invalid. I���m describing it with this schema:
>
> <xsd:element name="MimeVersion"
> dfdl:initiator="MIME-Version:%SP;" dfdl:terminator="%NL;" dfdl:length="3"
> dfdl:lengthKind="explicit">
> <xsd:annotation>
> <xsd:appinfo
> source="http://www.ogf.org/dfdl/dfdl-1.0/";>
> <dfdl:assert test="{
> dfdl:checkConstraints(.) }" message="MIME-Version must have a value of
> '1.0'."/>
> </xsd:appinfo>
> </xsd:annotation>
> <xsd:simpleType>
> <xsd:restriction base="xsd:string">
> <xsd:enumeration value="1.0"/>
> </xsd:restriction>
> </xsd:simpleType>
> </xsd:element>
>
> The error message I get is:
>
> [error] Parse Error: Assertion failed. MIME-Version must have a value of
> '1.0'.
> Schema context: element.MimeVersion Location line 13 column 135 in
> file:/C:/���/MimeVersion.xsd
> Data location was preceding byte 19
> UTF-8 text starting at byte 16 is: (g
> )
> Data (hex) starting at byte 16 is: (0x670D0A)
>
> Getting my assertion message back is helpful, as it tells me what the right
> value should be. But I think this error could be improved by also telling me
> what value was found. Perhaps the message could look at bit more like this:
>
> [parsing error] While processing the MimeVersion element, the value ���dog���
> was found.
> This fails the assertion: MIME-Version must have a value of '1.0'.
> Schema: Location line 13 column 135 in file:/C:/���/MimeVersion.xsd
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