add groups example in circleci

.circleci/config.yml

@@ -128,7 +128,7 @@ jobs:
       - attach_workspace:
           at: /home/circleci/project/
       - run:
-          name: test helloworld
+          name: test helloworld example
           command: |
             export LEO=/home/circleci/project/project/bin/leo
             ./project/.circleci/test-helloworld.sh
@@ -141,7 +141,7 @@ jobs:
       - attach_workspace:
           at: /home/circleci/project/
       - run:
-          name: test bubblesort
+          name: test bubblesort example
           command: |
             export LEO=/home/circleci/project/project/bin/leo
             ./project/.circleci/test-bubblesort.sh
@@ -154,10 +154,23 @@ jobs:
       - attach_workspace:
           at: /home/circleci/project/
       - run:
-          name: test core
+          name: test core example
           command: |
             export LEO=/home/circleci/project/project/bin/leo
             ./project/.circleci/test-core.sh
+
+  test-groups:
+    docker:
+      - image: cimg/rust:1.62
+    resource_class: xlarge
+    steps:
+      - attach_workspace:
+          at: /home/circleci/project/
+      - run:
+          name: test groups example
+          command: |
+            export LEO=/home/circleci/project/project/bin/leo
+            ./project/.circleci/test-groups.sh
 workflows:
   version: 2
   main-workflow:
@@ -180,3 +193,6 @@ workflows:
       - test-core:
           requires:
             - leo-executable
+      - test-groups:
+          requires:
+            - leo-executable

.circleci/test-groups.sh

@@ -0,0 +1,5 @@
+# Build and run the groups Leo program.
+cd ./project/examples/groups
+
+# Run `leo run`.
+$LEO run