feat(test): move spread test setup from task to suite

Signed-off-by: Claudio Matsuoka <claudio.matsuoka@canonical.com>

charmcraft/templates/init-machine/spread.yaml.j2

@@ -1,8 +1,9 @@
 project: {{ name }}-tests
 
 environment:
+  PROVIDER: lxd
   CHARMCRAFT_CHANNEL: latest/stable
-  JUJU_CHANNEL: latest/stable
+  JUJU_CHANNEL: 3/stable
   LXD_CHANNEL: latest/stable
 
   JUJU_BOOTSTRAP_OPTIONS: --model-default test-mode=true --model-default automatically-retry-hooks=false --model-default
@@ -17,7 +18,7 @@ environment:
   LANGUAGE: "en"
 
   PROJECT_PATH: /home/spread/proj
-  CRAFT_TEST_PATH: /home/spread/proj/tests/spread/lib
+  CRAFT_TEST_LIB_PATH: /home/spread/proj/tests/spread/lib
 
 backends:
   multipass:
@@ -85,9 +86,40 @@ backends:
 
 
 suites:
-  tests/spread/:
-    summary: Spread tests
+  tests/spread/general/:
+    summary: Charm functionality tests
 
+    systems:
+      - ubuntu-22.04
+      - ubuntu-20.04
+
+    environment:
+      CHARMCRAFT_CHANNEL/charmcraft_current: latest/stable
+      CHARMCRAFT_CHANNEL/charmcraft_next: latest/candidate
+
+    prepare: |
+      set -e
+      . "$CRAFT_TEST_LIB_PATH"/funcs.sh
+      apt update -y
+      apt install -y python3-pip
+      pip3 install tox
+
+      install_lxd
+      install_charmcraft
+      install_juju
+      bootstrap_juju
+
+      juju add-model testing
+
+    restore: |
+      set -e
+      . "$CRAFT_TEST_LIB_PATH"/funcs.sh
+      rm -f "$PROJECT_PATH"/*.charm
+      charmcraft clean -p "$PROJECT_PATH"
+
+      restore_juju
+      restore_charmcraft
+      restore_lxd
 
 exclude:
   - .git
@@ -109,7 +141,4 @@ restore: |
   mkdir -p "$PROJECT_PATH"
 
 
-kill-timeout: 15m
-
-workers: 1
-
+kill-timeout: 1h

charmcraft/templates/init-machine/tests/spread/general/integration/task.yaml.j2

@@ -0,0 +1,4 @@
+summary: Run the charm integration test
+
+execute: |
+  tox -e integration

charmcraft/templates/init-machine/tests/spread/lib/funcs.sh.j2

@@ -19,15 +19,43 @@ install_lxd() {
 }
 
 
+install_charmcraft() {
+    snap install charmcraft --classic --channel "$CHARMCRAFT_CHANNEL"
+    snap refresh charmcraft --classic --channel "$CHARMCRAFT_CHANNEL"
+}
+
+
+install_juju() {
+    snap install juju --classic --channel "$JUJU_CHANNEL"
+    snap refresh juju --classic --channel "$JUJU_CHANNEL"
+    mkdir -p "$HOME"/.local/share/juju
+    snap install juju-crashdump --classic
+}
+
+
 bootstrap_juju() {
     juju bootstrap --verbose "$PROVIDER" "$CONTROLLER_NAME" \
       $JUJU_BOOTSTRAP_OPTIONS $JUJU_EXTRA_BOOTSTRAP_OPTIONS \
       --bootstrap-constraints=$JUJU_BOOTSTRAP_CONSTRAINTS
 }
 
 
+restore_charmcraft() {
+    snap remove --purge charmcraft
+}
+
+
+restore_lxd() {
+    snap stop lxd
+    snap remove --purge lxd
+}
+
+
 restore_juju() {
-     juju controllers --refresh ||:
-     juju destroy-controller -v --no-prompt --show-log \
+    juju controllers --refresh ||:
+    juju destroy-controller -v --no-prompt --show-log \
        --destroy-storage --destroy-all-models "$CONTROLLER_NAME"
+    snap stop juju
+    snap remove --purge juju
+    snap remove --purge juju-crashdump
 }