Allow the python interpreter to be specified when running tests

Author: dxmaxwell

Test/test_standalone.sh

@@ -1,39 +1,54 @@
 # Execute all tests that can run without any dependencies
+DIRNAME=`dirname "$0"`
+
+PYTHON="${PYTHON:-python}"
 
 export PYTHONPATH=".."
 
 FAILED=0
-python test_range_helper.py
+$PYTHON "$DIRNAME/test_range_helper.py"
+if [ $? -ne 0 ]
+then
+    FAILED=`expr $FAILED + 1`
+fi
+
+$PYTHON "$DIRNAME/test_scan_settings.py"
+if [ $? -ne 0 ]
+then
+    FAILED=`expr $FAILED + 1`
+fi
+
+$PYTHON "$DIRNAME/test_commands.py"
 if [ $? -ne 0 ]
 then
     FAILED=`expr $FAILED + 1`
 fi
 
-python test_scan_settings.py
+$PYTHON "$DIRNAME/test_table_scan.py"
 if [ $? -ne 0 ]
 then
     FAILED=`expr $FAILED + 1`
 fi
 
-python test_commands.py
+$PYTHON "$DIRNAME/test_data.py"
 if [ $? -ne 0 ]
 then
     FAILED=`expr $FAILED + 1`
 fi
 
-python test_table_scan.py
+$PYTHON -m doctest "$DIRNAME/test_ndim.txt"
 if [ $? -ne 0 ]
 then
     FAILED=`expr $FAILED + 1`
 fi
 
-python test_data.py
+$PYTHON -m doctest "$DIRNAME/test_alignment.py"
 if [ $? -ne 0 ]
 then
     FAILED=`expr $FAILED + 1`
 fi
 
-python -m doctest test_ndim.txt
+$PYTHON -m doctest "$DIRNAME/test_spreadsheet.py"
 if [ $? -ne 0 ]
 then
     FAILED=`expr $FAILED + 1`