hoxsl/test/apply/ref.xspec

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<?xml version="1.0" encoding="utf-8"?>
<!--
Tests dynamic function reference
Copyright (C) 2014 LoVullo Associates, Inc.
This file is part of hoxsl.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
-->
<description xmlns="http://www.jenitennison.com/xslt/xspec"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:x="http://www.jenitennison.com/xslt/xspec"
xmlns:f="http://www.lovullo.com/hoxsl/apply"
xmlns:foo="http://www.lovullo.com/_junk"
stylesheet="ref-test.xsl">
<variable name="foo-uri"
select="namespace-uri-for-prefix(
'foo', root(.)/element() )" />
<variable name="test-arity"
select="5" />
<variable name="test-fn"
select="f:make-ref( QName( $foo-uri, 'foo:bar' ),
$test-arity )" />
<variable name="args">
<foo:args>
<foo:a />
<foo:b />
<foo:c />
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<foo:d />
</foo:args>
</variable>
<scenario label="f:make-ref constructor">
<scenario label="when called with a function QName and arity">
<variable name="qname"
select="QName( $foo-uri, 'reftest' )" />
<variable name="arity"
select="2" />
<call function="f:make-ref">
<param name="name" select="$qname" />
<param name="arity" select="$arity" />
</call>
<expect label="produces a dynamic function reference"
test="f:is-ref( $x:result )" />
<expect label="produces provided reference arity"
test="f:arity( $x:result ) = $arity" />
<expect label="produces reference to expected QName"
test="f:QName( $x:result ) = $qname" />
<!-- this isn't breaking encapsulation: we know that a sequence
is returned and we must know how to delimit the references
within it -->
<expect label="produces length equal to length of returned
sequence"
test="f:length( $x:result ) = count( $x:result )" />
</scenario>
<scenario label="produces a valid dynamic function reference">
<variable name="arg">
<foo:bar />
</variable>
<call function="f:apply">
<param name="fnref"
select="f:make-ref( QName( $foo-uri, 'fn1' ),
1 )" />
<param name="arg1" select="$arg" />
</call>
<expect label="that can be applied using f:apply"
test="$x:result[ 1 ] = foo:applied[ @n = 1 ]
and $x:result[ 2 ] is $arg" />
</scenario>
</scenario>
<scenario label="f:is-ref predicate">
<scenario label="given a valid dynamic function reference">
<call function="f:is-ref">
<param name="fnref"
select="f:make-ref( QName( $foo-uri, 'foo' ), 0 )" />
</call>
<expect label="returns true()"
select="true()" />
</scenario>
<scenario label="given a valid dynamic function reference adjacent
to other data">
<call function="f:is-ref">
<param name="fnref"
select="f:make-ref( QName( $foo-uri, 'foo' ), 0 ),
'adjacent data'" />
</call>
<expect label="returns true()"
select="true()" />
</scenario>
<scenario label="given an invalid dynamic function reference">
<call function="f:is-ref">
<param name="fnref">
<foo:bar />
</param>
</call>
<expect label="returns false()"
select="false()" />
</scenario>
<scenario label="given a dynamic function reference without arity">
<call function="f:is-ref">
<param name="fnref">
<f:ref>
<foo:bar />
</f:ref>
</param>
</call>
<expect label="returns false()"
select="false()" />
</scenario>
<scenario label="given a dynamic function reference without
integral arity">
<call function="f:is-ref">
<param name="fnref">
<f:ref arity="moo">
<foo:bar />
</f:ref>
</param>
</call>
<expect label="returns false()"
select="false()" />
</scenario>
<scenario label="given a dynamic function reference without target
node">
<call function="f:is-ref">
<param name="fnref">
<f:ref arity="0" />
</param>
</call>
<expect label="returns false()"
select="false()" />
</scenario>
<scenario label="given an empty sequence">
<call function="f:is-ref">
<param name="fnref" select="()" />
</call>
<expect label="returns false()"
select="false()" />
</scenario>
<scenario label="given a non-element">
<call function="f:is-ref">
<param name="fnref" select="5" />
</call>
<expect label="returns false()"
select="false()" />
</scenario>
</scenario>
<scenario label="f:QName accessor">
<variable name="foo-qname"
select="QName( $foo-uri, 'foo' )" />
<scenario label="given a valid dynamic function reference with no
argments">
<call function="f:QName">
<param name="fnref"
select="f:make-ref( $foo-qname, 0 )" />
</call>
<expect label="returns QName"
test="$x:result instance of xs:QName" />
<expect label="returns QName of target dynamic function"
select="$foo-qname" />
</scenario>
<scenario label="given a valid dynamic function reference with
argments">
<call function="f:QName">
<param name="fnref"
select="f:set-args( f:make-ref( $foo-qname, 0 ),
(1, 2) )" />
</call>
<expect label="returns QName"
test="$x:result instance of xs:QName" />
<expect label="returns QName of target dynamic function"
select="$foo-qname" />
</scenario>
<scenario label="given a dynamic function reference with no target
node">
<call function="f:QName">
<param name="fnref">
<f:ref arity="5" />
</param>
</call>
<expect label="returns empty sequence"
select="()" />
</scenario>
<scenario label="given a valid dynamic function reference with
adjacent data">
<call function="f:QName">
<param name="fnref"
select="f:make-ref( $foo-qname, 0 ),
'adjacent data'" />
</call>
<expect label="returns QName"
test="$x:result instance of xs:QName" />
<expect label="returns QName of target dynamic function"
select="$foo-qname" />
</scenario>
</scenario>
<scenario label="f:arity">
<variable name="test-arity"
select="5" />
<scenario label="given a proper function reference">
<!-- test our format directly; do not rely on the
apply-gen code -->
<call function="f:arity">
<param name="fnref" select="$test-fn" />
</call>
<expect label="provides function arity"
select="$test-arity" />
</scenario>
<scenario label="given a proper function reference with adjacent
data">
<!-- test our format directly; do not rely on the
apply-gen code -->
<call function="f:arity">
<param name="fnref" select="$test-fn,
'adjacent data'" />
</call>
<expect label="provides function arity"
select="$test-arity" />
</scenario>
<scenario label="given a partially applied function reference">
<call function="f:arity">
<param name="fnref"
select="f:apply( $test-fn, 1, 2 )" />
</call>
<expect label="provides arity of the target function minus the
number of bound parameters"
select="$test-arity - 2" />
</scenario>
<scenario label="given a multiply-partially-applied function reference">
<call function="f:arity">
<param name="fnref"
select="f:apply(
f:apply( $test-fn, 1, 2 ),
3 )" />
</call>
<expect label="provides arity of the target function minus the
number of bound parameters"
select="$test-arity - 3" />
</scenario>
</scenario>
<scenario label="f:set-args setter">
<scenario label="setting empty args on reference with no args">
<call function="f:set-args">
<param name="fnref" select="$test-fn" />
<param name="args" select="()" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="retains target arity"
test="f:arity( $x:result ) = f:arity( $test-fn )" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
</scenario>
<scenario label="setting args on reference with no args">
<call function="f:set-args">
<param name="fnref" select="$test-fn" />
<param name="args" select="(1, 2)" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<!-- the function is now partially applied -->
<expect label="reduces arity by number of arguments"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
</scenario>
<scenario label="clearing args on reference with args">
<call function="f:set-args">
<param name="fnref"
select="f:set-args( $test-fn, (1, 2) )" />
<param name="args"
select="()" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<!-- the function is no longer partially applied -->
<expect label="restores target function arity"
test="f:arity( $x:result ) = f:arity( $test-fn )" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
</scenario>
<scenario label="increasing reference argument count">
<call function="f:set-args">
<param name="fnref"
select="f:set-args( $test-fn, (1, 2) )" />
<param name="args"
select="(1, 2, 3)" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<!-- the function is no longer partially applied -->
<expect label="reduces arity by number of argments"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 3" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
</scenario>
<scenario label="decrasing reference argument count">
<call function="f:set-args">
<param name="fnref"
select="f:set-args( $test-fn, (1, 2) )" />
<param name="args"
select="1" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<!-- the function is no longer partially applied -->
<expect label="increases arity by difference in argument count"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 1" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
</scenario>
<scenario label="operating adjacent to other data">
<call function="f:set-args">
<param name="fnref" select="$test-fn,
$args/foo:a,
$args/foo:b" />
<param name="args" select="(1, 2)" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="reduces arity by number of arguments"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
<!-- notice that the length _does not_ reflect adjacent data -->
<expect label="produces length equal to length of constructed
sequence, sans adjacent data"
test="f:length( $x:result ) = count( $x:result ) - 2" />
<variable name="rlength" select="count( $x:result )" />
<expect label="retains adjacent data by reference"
test="$x:result[ $rlength - 1 ] is $args/foo:a
and $x:result[ $rlength ] is $args/foo:b" />
</scenario>
</scenario>
<scenario label="f:args accessor">
<scenario label="given a new dynamic function reference">
<call function="f:args">
<param name="fnref" select="$test-fn" />
</call>
<expect label="produces empty argument list"
select="()" />
</scenario>
<scenario label="after an initial f:set-args">
<call function="f:args">
<param name="fnref"
select="f:set-args( $test-fn, ($args/foo:a,
$args/foo:b) )" />
</call>
<expect label="returns sequence of arguments by reference"
test="$x:result[ 1 ] is $args/foo:a
and $x:result[ 2 ] is $args/foo:b" />
<expect label="returns no other items"
test="count( $x:result ) = 2" />
</scenario>
<scenario label="after a f:set-args on an existing argument list">
<call function="f:args">
<param name="fnref"
select="f:set-args(
f:set-args( $test-fn, ($args/foo:a,
$args/foo:b) ),
($args/foo:b,
$args/foo:c) )" />
</call>
<expect label="returns sequence of arguments by reference,
discarding previously set arguments"
test="$x:result[ 1 ] is $args/foo:b
and $x:result[ 2 ] is $args/foo:c" />
<expect label="returns no other items"
test="count( $x:result ) = 2" />
</scenario>
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<scenario label="operating on a reference preceding adjacent data">
<call function="f:args">
<param name="fnref"
select="f:set-args( $test-fn, ($args/foo:a,
$args/foo:b) ),
'adjacent data'" />
</call>
<expect label="returns sequence of arguments by reference"
test="$x:result[ 1 ] is $args/foo:a
and $x:result[ 2 ] is $args/foo:b" />
<expect label="returns no adjacent data"
test="count( $x:result ) = 2" />
</scenario>
</scenario>
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<scenario label="f:push-args mutator">
<scenario label="pushing arguments onto empty reference list">
<call function="f:push-args">
<param name="fnref"
select="$test-fn" />
<param name="args"
select="$args/foo:a,
$args/foo:b" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="reduces arity by number of arguments, relative to
target function"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
<expect label="sets arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:a
and f:args( $x:result )[ 2 ] is $args/foo:b" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
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</scenario>
<scenario label="pushing arguments onto populated reference
list">
<call function="f:push-args">
<param name="fnref"
select="f:set-args( $test-fn,
($args/foo:a,
$args/foo:b) )" />
<param name="args"
select="$args/foo:c,
$args/foo:d" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="reduces arity by number of arguments, relative to
previous arity"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 4" />
<expect label="retains previous arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:a
and f:args( $x:result )[ 2 ] is $args/foo:b" />
<expect label="pushes new arguments by reference"
test="f:args( $x:result )[ 3 ] is $args/foo:c
and f:args( $x:result )[ 4 ] is $args/foo:d" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
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</scenario>
<scenario label="pushing empty argument list onto populated
reference list">
<call function="f:push-args">
<param name="fnref"
select="f:set-args( $test-fn,
($args/foo:a,
$args/foo:b) )" />
<param name="args" select="()" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="retains previous reference arity"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
<expect label="retains previous arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:a
and f:args( $x:result )[ 2 ] is $args/foo:b" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
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</scenario>
<scenario label="pushing arguments onto reference adjacent to
other data">
<call function="f:push-args">
<param name="fnref"
select="$test-fn,
$args/foo:a,
$args/foo:b" />
<param name="args"
select="$args/foo:c" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="reduces arity by number of arguments, relative to
target function"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 1" />
<expect label="sets arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:c" />
<variable name="rlength" select="count( $x:result )" />
<expect label="produces length equal to length of constructed
sequence, sans adjacent data"
test="f:length( $x:result ) = $rlength - 2" />
<expect label="retains adjacent data by reference"
test="$x:result[ $rlength - 1 ] is $args/foo:a
and $x:result[ $rlength ] is $args/foo:b" />
</scenario>
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</scenario>
<scenario label="f:unshift-args mutator">
<scenario label="unshifting arguments onto empty reference list">
<call function="f:unshift-args">
<param name="fnref"
select="$test-fn" />
<param name="args"
select="$args/foo:a,
$args/foo:b" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="reduces arity by number of arguments, relative to
target function"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
<expect label="sets arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:a
and f:args( $x:result )[ 2 ] is $args/foo:b" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
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</scenario>
<scenario label="unshifting arguments onto populated reference
list">
<call function="f:unshift-args">
<param name="fnref"
select="f:set-args( $test-fn,
($args/foo:a,
$args/foo:b) )" />
<param name="args"
select="$args/foo:c,
$args/foo:d" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="reduces arity by number of arguments, relative to
previous arity"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 4" />
<expect label="retains previous arguments by reference"
test="f:args( $x:result )[ 3 ] is $args/foo:a
and f:args( $x:result )[ 4 ] is $args/foo:b" />
<expect label="unshifts new arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:c
and f:args( $x:result )[ 2 ] is $args/foo:d" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
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</scenario>
<scenario label="unshifting empty argument list onto populated
reference list">
<call function="f:unshift-args">
<param name="fnref"
select="f:set-args( $test-fn,
($args/foo:a,
$args/foo:b) )" />
<param name="args" select="()" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="retains previous reference arity"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
<expect label="retains previous arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:a
and f:args( $x:result )[ 2 ] is $args/foo:b" />
<expect label="produces length equal to length of constructed
sequence"
test="f:length( $x:result ) = count( $x:result )" />
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</scenario>
<scenario label="unshifting arguments onto reference adjacent to
other data">
<call function="f:unshift-args">
<param name="fnref"
select="$test-fn,
$args/foo:a,
$args/foo:b" />
<param name="args"
select="$args/foo:c" />
</call>
<expect label="retains target QName"
test="f:QName( $x:result ) = f:QName( $test-fn )" />
<expect label="reduces arity by number of arguments, relative to
target function"
test="f:arity( $x:result ) = f:arity( $test-fn ) - 1" />
<expect label="sets arguments by reference"
test="f:args( $x:result )[ 1 ] is $args/foo:c" />
<variable name="rlength" select="count( $x:result )" />
<expect label="produces length equal to length of constructed
sequence, sans adjacent data"
test="f:length( $x:result ) = $rlength - 2" />
<expect label="retains adjacent data by reference"
test="$x:result[ $rlength - 1 ] is $args/foo:a
and $x:result[ $rlength ] is $args/foo:b" />
</scenario>
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</scenario>
</description>