getting fortran tests working

tests/unit/Makefile.am

@@ -22,10 +22,10 @@ libncdf_tests_la_SOURCES = ncdf_tests.F90
 libbasic_tests_la_SOURCES = basic_tests.F90
 
 # Tests will run from a bash script.
-#TESTS = run_tests.sh
+TESTS = run_tests.sh
 
 # Distribute the test script.
-EXTRA_DIST = CMakeLists.txt #run_tests.sh
+EXTRA_DIST = CMakeLists.txt run_tests.sh
 
 # Clean up files produced during testing.
 CLEANFILES = *.nc *.log

tests/unit/run_tests.sh

@@ -0,0 +1,27 @@
+#!/bin/sh
+# This is a test script for PIO for tests/unit directory.
+# Ed Hartnett 3/25/19
+
+# Stop execution of script if error is returned.
+set -e
+
+# Stop loop if ctrl-c is pressed.
+trap exit INT TERM
+
+printf 'running PIO tests...\n'
+
+PIO_TESTS='pio_unit_test_driver'
+
+success1=true
+for TEST in $PIO_TESTS
+do
+    success1=false
+    echo "running ${TEST}"
+    mpiexec -n 4 ./${TEST} && success1=true || break
+done
+
+# Did we succeed?
+if test x$success1 = xtrue; then
+    exit 0
+fi
+exit 1