Fix export cache issue

Resolve #1551 and #1020.
We are never returning the result of solved operations so Buildkit could not
cache the layer.
This commit implements a simple system to forward operations' result to the
main build to cache it.

Signed-off-by: Vasek - Tom C <tom.chauveau@epitech.eu>

tests/helpers.bash

@@ -13,6 +13,13 @@ common_setup() {
     DAGGER_TELEMETRY_DISABLE="1"
     export DAGGER_TELEMETRY_DISABLE
 
+    export DAGGER_LOG_LEVEL="debug"
+    if [ -n "$GITHUB_ACTIONS" ];
+    then
+        export DAGGER_CACHE_TO="type=gha,mode=max,scope=integration-tests-$BATS_TEST_NAME"
+        export DAGGER_CACHE_FROM="type=gha,scope=integration-tests-$BATS_TEST_NAME"
+    fi
+
     SOPS_AGE_KEY_FILE=~/.config/dagger/keys.txt
     export SOPS_AGE_KEY_FILE
 }

tests/package.json

@@ -1,7 +1,7 @@
 {
   "license": "Apache-2.0",
   "scripts": {
-    "test": "bats --jobs 4 --show-output-of-passing-tests --print-output-on-failure ."
+    "test": "bats --jobs 4 --print-output-on-failure --verbose-run ."
   },
   "devDependencies": {
     "bats": "https://github.com/bats-core/bats-core#master",

tests/plan.bats

@@ -144,7 +144,7 @@ setup() {
   cd "$TESTDIR/plan/client/filesystem/conflict"
 
   echo -n foo > test.txt
-  run "$DAGGER" "do" --log-level debug -p . test
+  run "$DAGGER" "do" -p . test
   assert_line --regexp "client\.filesystem\..+\.write.+dependency=client\.filesystem\..+\.read"
 
   rm -f test.txt
@@ -221,4 +221,4 @@ setup() {
    # Run with invalid platform
    run "$DAGGER" "do" -p./plan/platform/config_platform_failure_invalid_platform.cue verify
    assert_failure
-}
+}

tests/project.bats

@@ -25,6 +25,6 @@ setup() {
 	test -f ./cue.mod/pkg/.gitattributes
 	run cat ./cue.mod/pkg/.gitattributes
 	assert_output --partial "generated by dagger"
- 
+
 	test ! -f ./cue.mod/pkg/.gitignore
 }