Add functional test for ironic-agent on Fedora

Added support for ramdisk-type elements in tests/test_functions.bash
Elements are distinguished by element-type file in a test element.
Note that ironic-agent ramdisk is built with disk-image-create.

Change-Id: I4759859e7f3c004c2d00e7318729602e6c3c4d95

elements/ironic-agent/test-elements/build-succeeds-fedora/element-deps

@@ -0,0 +1 @@
+fedora

elements/ironic-agent/test-elements/build-succeeds-fedora/element-type

@@ -0,0 +1 @@
+ramdisk

elements/ironic-agent/test-elements/build-succeeds-fedora/environment.d/10-fedora-pin-mirror.bash

@@ -0,0 +1,2 @@
+# Pin to this mirror because the roundrobin is fairly unreliable
+export DIB_DISTRIBUTION_MIRROR=http://dl.fedoraproject.org/pub/fedora/linux

tests/test_elements.bash

@@ -10,6 +10,10 @@ for test_element in $basedir/../elements/*/test-elements/*; do
     if [ -d "$test_element" ]; then
         # our element name is two dirs up
         element_name=$(basename $(dirname $(dirname $test_element)))
-        run_element_test "$(basename $test_element)" "$element_name"
+        element_type=disk
+        if [ -f "$test_element/element-type" ]; then
+            element_type=$(cat "$test_element/element-type")
+        fi
+        run_${element_type}_element_test "$(basename $test_element)" "$element_name"
     fi
 done

tests/test_functions.bash

@@ -45,7 +45,7 @@ function build_test_image() {
     docker rmi $base_dest/image
 }
 
-function run_element_test() {
+function run_disk_element_test() {
     test_element=$1
     element=$2
 
@@ -81,3 +81,26 @@ function run_element_test() {
     trap EXIT
     rm -rf $dest_dir /tmp/dib-test-should-fail
 }
+
+function run_ramdisk_element_test() {
+    test_element=$1
+    element=$2
+
+    dest_dir=$(mktemp -d)
+
+    if ELEMENTS_PATH=$DIB_ELEMENTS/$element/test-elements \
+        $DIB_CMD -o $dest_dir/image $element $test_element; then
+        # TODO(dtantsur): test also kernel presence once we sort out its naming
+        # problem (vmlinuz vs kernel)
+        if ! [ -f "$dest_dir/image.initramfs" ]; then
+            echo "Error: Build failed for element: $element, test-element: $test_element."
+            echo "No image $dest_dir/image.initramfs found!"
+            exit 1
+        else
+            echo "PASS: Element $element, test-element: $test_element"
+        fi
+    else
+        echo "Error: Build failed for element: $element, test-element: $test_element."
+        exit 1
+    fi
+}