Add integration test to validate scripting feature

Author: ctrueden

bin/test.sh

@@ -25,6 +25,25 @@ else
 fi
 jpypeCode=$?
 
+echo
+echo "-------------------------------------------"
+echo "| Running integration tests (JPype only)  |"
+echo "-------------------------------------------"
+itCode=0
+for t in it/*.py
+do
+  python "$t"
+  code=$?
+  printf -- "--> %s " "$t"
+  if [ "$code" -eq 0 ]
+  then
+    echo "[OK]"
+  else
+    echo "[FAILED]"
+    itCode=$code
+  fi
+done
+
 echo
 echo "-------------------------------------------"
 echo "|  Testing Jep mode (Python inside Java)  |"
@@ -68,5 +87,6 @@ jepCode=$?
 rm -f jep_test.py
 
 test "$jpypeCode" -ne 0 && exit "$jpypeCode"
+test "$itCode" -ne 0 && exit "$itCode"
 test "$jepCode" -ne 0 && exit "$jepCode"
 exit 0

it/scripting.py

@@ -0,0 +1,59 @@
+"""
+Test the enable_python_scripting function, and subsequent use of
+the SciJava Python script language (org.scijava:scripting-python).
+
+As a side effect, this script also tests Maven dependency resolution.
+"""
+
+import sys
+import scyjava
+
+scyjava.config.endpoints.extend([
+    "org.scijava:scijava-common:2.94.2",
+    "org.scijava:scripting-python:MANAGED"
+])
+
+# Create minimal SciJava context with a ScriptService.
+Context = scyjava.jimport("org.scijava.Context")
+ScriptService = scyjava.jimport("org.scijava.script.ScriptService")
+# HACK: Avoid "[ERROR] Cannot create plugin" spam.
+WidgetService = scyjava.jimport("org.scijava.widget.WidgetService")
+ctx = Context(ScriptService, WidgetService)
+
+# Enable the Python script language.
+scyjava.enable_python_scripting(ctx)
+
+# Assert that the Python script language is available.
+ss = ctx.service("org.scijava.script.ScriptService")
+lang = ss.getLanguageByName("Python")
+assert lang is not None and "Python" in lang.getNames()
+
+# Construct a script.
+script = """
+#@ String name
+#@ int age
+#@output String statement
+statement = f"Hello, {name}! In one year you will be {age + 1} years old."
+"A wild return value appears!"
+"""
+StringReader = scyjava.jimport("java.io.StringReader")
+ScriptInfo = scyjava.jimport("org.scijava.script.ScriptInfo")
+info = ScriptInfo(ctx, "script.py", StringReader(script))
+info.setLanguage(lang)
+
+# Run the script.
+future = ss.run(info, True, "name", "Chuckles", "age", 13)
+try:
+    module = future.get()
+    outputs = module.getOutputs()
+    statement = outputs["statement"]
+    return_value = module.getReturnValue()
+except Exception as e:
+    sys.stderr.write("-- SCRIPT EXECUTION FAILED --\n")
+    trace = scyjava.jstacktrace(e)
+    if trace:
+        sys.stderr.write(f"{trace}\n")
+    raise e
+
+assert statement == "Hello, Chuckles! In one year you will be 14 years old."
+assert return_value == "A wild return value appears!"