tests: replace use of test-snapd-curl with simpleget where possible

Replace uses of test-snapd-curl with simpleget in an attempt to reduce
the number of external dependencies installed by the tests.

Signed-off-by: Maciej Borzecki <maciej.borzecki@canonical.com>

tests/core/snapd-refresh-vs-services-reboots/task.yaml

@@ -27,19 +27,17 @@ environment:
   SNAPD_2_49_2_ARMHF: https://storage.googleapis.com/snapd-spread-tests/snaps/snapd_2.49.2_11586.snap
 
 prepare: |
-  snap install test-snapd-curl --edge --devmode # devmode so it can save to any dir
-
   # save the version of snapd from the PR to refresh to later
   INITIAL_REV=$(snap list snapd | tail -n +2 | awk '{print $3}')
   cp "/var/lib/snapd/snaps/snapd_$INITIAL_REV.snap" snapd-pr.snap
 
   # download and install snapd 2.49.2
   if os.query is-pc-amd64; then
-    test-snapd-curl.curl -s -o snapd_2.49.2.snap "$SNAPD_2_49_2_X86"
+    "$TESTSTOOLS/simpleget" -o snapd_2.49.2.snap "$SNAPD_2_49_2_X86"
   elif os.query is-arm64; then
-    test-snapd-curl.curl -s -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARM64"
+    "$TESTSTOOLS/simpleget" -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARM64"
   elif os.query is-armhf; then
-    test-snapd-curl.curl -s -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARMHF"
+    "$TESTSTOOLS/simpleget" -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARMHF"
   else
     echo "architecture not supported for this variant"
     exit 0

tests/core/snapd-refresh-vs-services/task.yaml

@@ -42,8 +42,6 @@ environment:
   SNAPD_2_49_2_ARMHF: https://storage.googleapis.com/snapd-spread-tests/snaps/snapd_2.49.2_11586.snap
 
 prepare: |
-  # install http snap to download files
-  snap install test-snapd-curl --edge --devmode # devmode so it can save to any dir
   # save the current version of snapd for later
   INITIAL_REV=$(snap list snapd | tail -n +2 | awk '{print $3}')
   cp "/var/lib/snapd/snaps/snapd_$INITIAL_REV.snap" snapd-pr.snap
@@ -81,11 +79,11 @@ execute: |
   # introduced so we can install a snap service that will not have Requires= in
   # it
   if os.query is-pc-amd64; then
-    test-snapd-curl.curl -s -o snapd_2.49.1.snap "$SNAPD_2_49_1_X86"
+    "$TESTSTOOLS/simpleget" -o snapd_2.49.1.snap "$SNAPD_2_49_1_X86"
   elif os.query is-arm64; then
-    test-snapd-curl.curl -s -o snapd_2.49.1.snap "$SNAPD_2_49_1_ARM64"
+    "$TESTSTOOLS/simpleget" -o snapd_2.49.1.snap "$SNAPD_2_49_1_ARM64"
   elif os.query is-armhf; then
-    test-snapd-curl.curl -s -o snapd_2.49.1.snap "$SNAPD_2_49_1_ARMHF"
+    "$TESTSTOOLS/simpleget" -o snapd_2.49.1.snap "$SNAPD_2_49_1_ARMHF"
   fi
 
   snap install --dangerous snapd_2.49.1.snap
@@ -112,11 +110,11 @@ execute: |
   elif [ "${SNAPD_VERSION_UNDER_TEST}" = "2.49.2" ]; then
     # download and install snapd 2.49.2
     if os.query is-pc-amd64; then
-      test-snapd-curl.curl -s -o snapd_2.49.2.snap "$SNAPD_2_49_2_X86"
+      "$TESTSTOOLS/simpleget" -o snapd_2.49.2.snap "$SNAPD_2_49_2_X86"
     elif os.query is-arm64; then
-      test-snapd-curl.curl -s -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARM64"
+      "$TESTSTOOLS/simpleget" -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARM64"
     elif os.query is-armhf; then
-      test-snapd-curl.curl -s -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARMHF"
+      "$TESTSTOOLS/simpleget" -o snapd_2.49.2.snap "$SNAPD_2_49_2_ARMHF"
     fi
 
     echo "Refreshing snapd to 2.49.2"

tests/main/default-tracks/task.yaml

@@ -14,12 +14,9 @@ environment:
     A_SNAP: test-snapd-default-track
     A_TRACK: default
 
-prepare: |
-    snap install test-snapd-curl --edge
-
 execute: |
     # first, precondition check that the snap has a default track
-    snap run test-snapd-curl.curl -H "Snap-Device-Series: 16" "https://api.snapcraft.io/v2/snaps/info/$A_SNAP" > info
+    "$TESTSTOOLS/simpleget" -H "Snap-Device-Series: 16" "https://api.snapcraft.io/v2/snaps/info/$A_SNAP" > info
     test "$( gojq -r '."default-track"' < info )" == "$A_TRACK"
 
     # TODO: check the output of 'snap info' for the default-track-having snap
@@ -33,7 +30,6 @@ execute: |
     "$TESTSTOOLS"/snapd-state check-state ".data.snaps.\"$A_SNAP\".channel" = "$A_TRACK/candidate"
 
     snap remove --purge "$A_SNAP"
-    snap remove --purge test-snapd-curl
 
     # now try a multi-install
     snap install "$A_SNAP" "test-snapd-tools"

tests/nested/manual/cloud-init-never-used-not-vuln/task.yaml

@@ -35,18 +35,16 @@ prepare: |
     # thus this test would no longer be testing that old vulnerable devices 
     # become safe after refreshing to the fix
     if [ "$NESTED_BUILD_SNAPD_FROM_CURRENT" = "false" ]; then
-        snap install test-snapd-curl --edge --devmode # devmode so it can save to any dir
-
         if os.query is-xenial; then
             # uc16 uses core snap
-            test-snapd-curl.curl -s -o core_2.45.snap "$SNAPD_2_45_CORE_SNAP"
+            "$TESTSTOOLS/simpleget" -o core_2.45.snap "$SNAPD_2_45_CORE_SNAP"
             # The core snap is unpacked and repacked to prevent it is auto-refreshed when
             # it is installed with --dangerous as it has a different hash
             unsquashfs -d core-snap core_2.45.snap
             snap pack core-snap/ "$(tests.nested get extra-snaps-path)"
         else 
             # uc18 uses snapd snap
-            test-snapd-curl.curl -s -o snapd_2.45.snap "$SNAPD_2_45_SNAPD_SNAP"
+            "$TESTSTOOLS/simpleget" -o snapd_2.45.snap "$SNAPD_2_45_SNAPD_SNAP"
             # The snapd snap is unpacked and repacked to prevent it from being
             # auto-refreshed when it is installed
             unsquashfs -d snapd-snap snapd_2.45.snap

tests/nested/manual/cloud-init-nocloud-not-vuln/task.yaml

@@ -41,18 +41,16 @@ prepare: |
     # thus this test would no longer be testing that old vulnerable devices 
     # become safe after refreshing to the fix
     if [ "$NESTED_BUILD_SNAPD_FROM_CURRENT" = "false" ]; then
-        snap install test-snapd-curl --edge --devmode # devmode so it can save to any dir
-
         if os.query is-xenial; then
             # uc16 uses core snap
-            test-snapd-curl.curl -s -o core_2.45.snap "$SNAPD_2_45_CORE_SNAP"
+            "$TESTSTOOLS/simpleget" -o core_2.45.snap "$SNAPD_2_45_CORE_SNAP"
             # The core snap is unpacked and repacked to prevent it is auto-refreshed when
             # it is installed with --dangerous as it has a different hash
             unsquashfs -d core-snap core_2.45.snap
             snap pack core-snap/ "$(tests.nested get extra-snaps-path)"
         else 
             # uc18 uses snapd snap
-            test-snapd-curl.curl -s -o snapd_2.45.snap "$SNAPD_2_45_SNAPD_SNAP"
+            "$TESTSTOOLS/simpleget" -o snapd_2.45.snap "$SNAPD_2_45_SNAPD_SNAP"
             # repack to prevent automatic refresh
             unsquashfs -d snapd-snap snapd_2.45.snap
             snap pack snapd-snap/ "$(tests.nested get extra-snaps-path)"