#48 with parser

Author: yegor256

README.md

@@ -60,11 +60,9 @@ and `@ClasspathSource` from [Jucs](https://github.com/objectionary/jucs)):
 
 ```java
 import org.eolang.jucs.ClasspathSource;
-import org.eolang.xax.XaxStory;
 import org.hamcrest.MatcherAssert;
 import org.hamcrest.Matchers;
 import org.junit.jupiter.params.ParameterizedTest;
-import org.junit.jupiter.api.Test;
 
 final class MyTest {
     @ParameterizedTest

pom.xml

@@ -97,11 +97,6 @@ SOFTWARE.
       <artifactId>xsline</artifactId>
       <version>0.22.1</version>
     </dependency>
-    <dependency>
-      <groupId>org.cactoos</groupId>
-      <artifactId>cactoos</artifactId>
-      <version>0.56.1</version>
-    </dependency>
     <dependency>
       <groupId>org.junit.jupiter</groupId>
       <artifactId>junit-jupiter-api</artifactId>
@@ -120,12 +115,23 @@ SOFTWARE.
       <version>12.5</version>
       <scope>runtime</scope>
     </dependency>
+    <dependency>
+      <groupId>org.cactoos</groupId>
+      <artifactId>cactoos</artifactId>
+      <version>0.56.1</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.eolang</groupId>
       <artifactId>jucs</artifactId>
       <version>0.2.0</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>org.eolang</groupId>
+      <artifactId>eo-parser</artifactId>
+      <version>0.46.0</version>
+    </dependency>
   </dependencies>
   <profiles>
     <profile>

src/main/java/org/eolang/xax/StoryMatcher.java

@@ -39,6 +39,7 @@
 import java.util.Collection;
 import java.util.LinkedList;
 import java.util.Map;
+import java.util.function.Function;
 import org.hamcrest.BaseMatcher;
 import org.hamcrest.Description;
 import org.junit.jupiter.api.Assumptions;
@@ -54,7 +55,12 @@ public final class StoryMatcher extends BaseMatcher<String> {
     /**
      * The train to start with.
      */
-    private final Train<Shift> train = new TrDefault<>();
+    private final Train<Shift> train;
+
+    /**
+     * The parser to use, when {@code input} is provided in the YAML.
+     */
+    private final Function<String, XML> parser;
 
     /**
      * The header of the match.
@@ -66,16 +72,36 @@ public final class StoryMatcher extends BaseMatcher<String> {
      */
     private String summary;
 
+    /**
+     * Ctor.
+     */
+    public StoryMatcher() {
+        this(
+            input -> {
+                throw new UnsupportedOperationException(
+                    "Parser is not provided, while YAML doesn't have the 'document' property"
+                );
+            }
+        );
+    }
+
+    /**
+     * Ctor.
+     * @param prsr The parser to use
+     */
+    public StoryMatcher(final Function<String, XML> prsr) {
+        this.parser = prsr;
+        this.train = new TrDefault<>();
+    }
+
     @Override
     @SuppressWarnings("unchecked")
     public boolean matches(final Object story) {
         final Map<String, Object> yaml = new Yaml().load(
             String.class.cast(story)
         );
         Assumptions.assumeTrue(yaml.get("skip") == null);
-        final XML before = new XMLDocument(
-            yaml.get("document").toString()
-        );
+        final XML before = this.before(yaml);
         final XML after = this.xsline(yaml).pass(before);
         Object asserts = yaml.get("asserts");
         if (asserts == null) {
@@ -143,6 +169,22 @@ public void describeMismatch(final Object log, final Description desc) {
         desc.appendText("\n").appendText(this.summary);
     }
 
+    /**
+     * Build input XML document.
+     * @param yaml The YAML
+     * @return The XML
+     */
+    private XML before(final Map<String, Object> yaml) {
+        final Object doc = yaml.get("document");
+        final XML xml;
+        if (doc == null) {
+            xml = this.parser.apply(yaml.get("input").toString());
+        } else {
+            xml = new XMLDocument(doc.toString());
+        }
+        return xml;
+    }
+
     /**
      * Build a transformation line.
      * @param yaml The YAML

src/main/java/org/eolang/xax/XaxStory.java

@@ -23,10 +23,13 @@
  */
 package org.eolang.xax;
 
+import java.io.IOException;
+import org.cactoos.io.InputOf;
 import org.cactoos.io.ResourceOf;
 import org.cactoos.text.TextOf;
 import org.cactoos.text.UncheckedText;
 import org.eolang.jucs.ClasspathSource;
+import org.eolang.parser.EoSyntax;
 import org.hamcrest.MatcherAssert;
 import org.hamcrest.Matchers;
 import org.junit.jupiter.api.Test;
@@ -60,7 +63,15 @@ void validatesSimpleScenario(final String yaml) {
         MatcherAssert.assertThat(
             "passes with no exceptions",
             yaml,
-            new StoryMatcher()
+            new StoryMatcher(
+                eo -> {
+                    try {
+                        return new EoSyntax(new InputOf(eo)).parsed();
+                    } catch (final IOException ex) {
+                        throw new IllegalArgumentException(ex);
+                    }
+                }
+            )
         );
     }
 

src/test/java/org/eolang/xax/StoryMatcherTest.java

@@ -22,7 +22,7 @@
 ---
 sheets:
   - /org/eolang/xax/simple.xsl
-document:
+document: |
   <doc>
     <a>
       <foo>hello</foo>

src/test/resources/org/eolang/xax/broken/bad-simple.yaml

@@ -0,0 +1,29 @@
+# The MIT License (MIT)
+#
+# Copyright (c) 2022-2024 Yegor Bugayenko
+#
+# Permission is hereby granted, free of charge, to any person obtaining a copy
+# of this software and associated documentation files (the "Software"), to deal
+# in the Software without restriction, including without limitation the rights
+# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+# copies of the Software, and to permit persons to whom the Software is
+# furnished to do so, subject to the following conditions:
+#
+# The above copyright notice and this permission notice shall be included
+# in all copies or substantial portions of the Software.
+#
+# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE
+# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+# SOFTWARE.
+---
+input: |
+  # No comments.
+  [] > foo
+    QQ.io.stdout > @
+      "Hello, world!"
+asserts:
+  - /program/objects/o