Implemented black-box test cases

* the directories below "./test" contain test cases
** "transformation.xsl" and the expected result as "reference.xml"
** tests are performed by "check.sh"
*** returns diff on error
* this system enables simple verification of external function results
** way simpler than C++ unit tests would be in this scenario
* expanded cmake instructions to automatically execute the test cases
* old example transformation was removed

2 files changed, 35 insertions, 0 deletions

diff --git a/test/read_xml_file/reference.xml b/test/read_xml_file/reference.xml
new file mode 100644
index 0000000..d82dc9c
--- /dev/null
+++ b/test/read_xml_file/reference.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<test_case>
+<function_read_xml_file>
+<item>Hello 1</item>
+<item>Hello 2</item>
+<item>Hello 3</item>
+<item>Hello 4</item>
+</function_read_xml_file>
+</test_case>
diff --git a/test/read_xml_file/transformation.xsl b/test/read_xml_file/transformation.xsl
new file mode 100644
index 0000000..ba6fed1
--- /dev/null
+++ b/test/read_xml_file/transformation.xsl
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xsl:stylesheet
+	version="1.0"
+	xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
+	xmlns:InputXSLT="function.inputxslt.application"
+	exclude-result-prefixes="InputXSLT"
+>
+
+<xsl:output
+	method="xml"
+	omit-xml-declaration="no"
+	encoding="UTF-8"
+	indent="yes"
+/>
+
+<xsl:template match="/">
+<test_case>
+	<function_read_xml_file>
+		<xsl:for-each select="InputXSLT:read-xml-file('../common/test.txt')/tester/eintrag">
+			<item><xsl:value-of select="."/></item>
+		</xsl:for-each>
+	</function_read_xml_file>
+</test_case>
+</xsl:template>
+
+</xsl:stylesheet>