stdlib: dagger.#Output

Signed-off-by: Solomon Hykes <solomon@dagger.io>

tests/core.bats

@@ -9,7 +9,7 @@ setup() {
     unset DAGGER_WORKSPACE
 }
 
-@test "core: inputs" {
+@test "core: inputs & outputs" {
    # List available inputs
    run dagger -e test-core input list
    assert_success
@@ -22,9 +22,14 @@ setup() {
    assert_success
    assert_output --partial 'Hello, Bob!'
 
+   run dagger -e test-core output list
+   assert_success
+   assert_output --partial 'message  "Hello, Bob!"'
+
    # Unset text input
    dagger -e test-core input unset name
    run dagger -e test-core up
    assert_success
    assert_output --partial 'Hello, world!'
 }
+