chore(integration): use offline install (#9599)

### Description

This PR does 3 things:
- Switch to use `--offline` when performing `npm install` to ensure we
are only using internal packages in our fixtures. We only do it for
`npm` as it lacks a `workspace` protocol.
- Add a `util` package that we were referencing in our nested workspace
fixture
- Add `--no-install` flag for tests that don't need to install deps.
Currently only used for our framework inference test where the presence
of `next` in a `package.json` is all we need. We never actually need
`next`.

### Testing Instructions

Passes in CI

turborepo-tests/helpers/install_deps.sh

@@ -11,7 +11,7 @@ elif [[ $1 != "" ]]; then
 fi
 
 if [ "$PACKAGE_MANAGER" == "npm" ]; then
-  npm install > /dev/null 2>&1
+  npm install --offline > /dev/null 2>&1
   if [[ "$OSTYPE" == "msys" ]]; then
     dos2unix --quiet "package-lock.json"
   fi

turborepo-tests/helpers/setup_integration_test.sh

@@ -2,14 +2,30 @@
 
 set -eo pipefail
 
-FIXTURE_NAME="${1-basic_monorepo}"
+INSTALL_DEPS=true
+ARGS=()
+
+while [[ $# -gt 0 ]]; do
+  case "$1" in
+    --no-install)
+      INSTALL_DEPS=false
+      shift # past the option
+      ;;
+    *)
+      ARGS+=("$1")
+      shift
+  esac
+done
+
+
+FIXTURE_NAME="${ARGS[0]-basic_monorepo}"
 
 # Default to version of npm installed with Node 18.20.2
 # If CI is failing, check that this version is the same as
 # the CI runner's version of npm
 PACKAGE_MANAGER="[email protected]"
-if [[ $2 != "" ]]; then
-  PACKAGE_MANAGER="$2"
+if [[ "${ARGS[1]}" != "" ]]; then
+  PACKAGE_MANAGER="${ARGS[1]}"
 fi
 
 THIS_DIR=$(dirname "${BASH_SOURCE[0]}")
@@ -28,7 +44,9 @@ fi
 "${TURBOREPO_TESTS_DIR}/helpers/copy_fixture.sh" "${TARGET_DIR}" "${FIXTURE_NAME}" "${TURBOREPO_TESTS_DIR}/integration/fixtures"
 "${TURBOREPO_TESTS_DIR}/helpers/setup_git.sh" "${TARGET_DIR}"
 "${TURBOREPO_TESTS_DIR}/helpers/setup_package_manager.sh" "${TARGET_DIR}" "$PACKAGE_MANAGER"
-"${TURBOREPO_TESTS_DIR}/helpers/install_deps.sh" "$PACKAGE_MANAGER"
+if $INSTALL_DEPS; then
+  "${TURBOREPO_TESTS_DIR}/helpers/install_deps.sh" "$PACKAGE_MANAGER"
+fi
 
 # Set TURBO env var, it is used by tests to run the binary
 if [[ "${OSTYPE}" == "msys" ]]; then

turborepo-tests/integration/fixtures/nested_packages/packages/util/package.json

@@ -0,0 +1,3 @@
+{
+  "name": "util"
+}

turborepo-tests/integration/tests/framework-inference.t

@@ -1,5 +1,5 @@
 Setup
-  $ . ${TESTDIR}/../../helpers/setup_integration_test.sh framework_inference
+  $ . ${TESTDIR}/../../helpers/setup_integration_test.sh framework_inference --no-install
 
 Prove that we start with no inferred variables
   $ ${TURBO} run build --dry=json | jq -r '.tasks[].environmentVariables.inferred'

turborepo-tests/integration/tests/run/unnamed-packages.t

@@ -4,8 +4,8 @@ Setup
 Run a build. In this test, the fixture is set up so that the nested package
 which does not have a name should be ignored. We should process it but filter.
   $ ${TURBO} build
-  \xe2\x80\xa2 Packages in scope: my-app (esc)
-  \xe2\x80\xa2 Running build in 1 packages (esc)
+  \xe2\x80\xa2 Packages in scope: my-app, util (esc)
+  \xe2\x80\xa2 Running build in 2 packages (esc)
   \xe2\x80\xa2 Remote caching disabled (esc)
   my-app:build: cache miss, executing [0-9a-f]+ (re)
   my-app:build: