Improve debugging experience for single integration test case

docs/devel/testing.md

@@ -146,7 +146,7 @@ To run all unit tests and generate an HTML coverage report, run the following:
 KUBE_COVER=y hack/test-go.sh
 ```
 
-At the end of the run, an the HTML report will be generated with the path
+At the end of the run, an HTML report will be generated with the path
 printed to stdout.
 
 To run tests and collect coverage in only one package, pass its relative path

hack/test-integration.sh

@@ -37,28 +37,34 @@ KUBE_TEST_API_VERSIONS=${KUBE_TEST_API_VERSIONS:-"v1,extensions/v1beta1;v1,autos
 KUBE_TIMEOUT="-timeout 600s"
 KUBE_INTEGRATION_TEST_MAX_CONCURRENCY=${KUBE_INTEGRATION_TEST_MAX_CONCURRENCY:-"-1"}
 LOG_LEVEL=${LOG_LEVEL:-2}
+KUBE_TEST_ARGS=${KUBE_TEST_ARGS:-}
 
 cleanup() {
+  kube::log::status "Cleaning up etcd"
   kube::etcd::cleanup
   kube::log::status "Integration test cleanup complete"
 }
 
 runTests() {
+  kube::log::status "Starting etcd instance"
   kube::etcd::start
-
   kube::log::status "Running integration test cases"
 
   # TODO: Re-enable race detection when we switch to a thread-safe etcd client
   # KUBE_RACE="-race"
-  KUBE_GOFLAGS="-tags 'integration no-docker' " \
+  KUBE_GOFLAGS="${KUBE_GOFLAGS:-} -tags 'integration no-docker'" \
     KUBE_RACE="" \
     KUBE_TIMEOUT="${KUBE_TIMEOUT}" \
     KUBE_TEST_API_VERSIONS="$1" \
     "${KUBE_ROOT}/hack/test-go.sh" test/integration
 
-  kube::log::status "Running integration test scenario with watch cache on"
-  KUBE_TEST_API_VERSIONS="$1" "${KUBE_OUTPUT_HOSTBIN}/integration" --v=${LOG_LEVEL} \
-    --max-concurrency="${KUBE_INTEGRATION_TEST_MAX_CONCURRENCY}" --watch-cache=true
+  # Run the watch cache tests
+  # KUBE_TEST_ARGS doesn't mean anything to the watch cache test.
+  if [[ -z "${KUBE_TEST_ARGS}" ]]; then
+    kube::log::status "Running integration test scenario with watch cache on"
+    KUBE_TEST_API_VERSIONS="$1" "${KUBE_OUTPUT_HOSTBIN}/integration" --v=${LOG_LEVEL} \
+      --max-concurrency="${KUBE_INTEGRATION_TEST_MAX_CONCURRENCY}" --watch-cache=true
+  fi
 
   cleanup
 }
@@ -73,12 +79,16 @@ checkEtcdOnPath() {
 
 checkEtcdOnPath
 
-
 "${KUBE_ROOT}/hack/build-go.sh" "$@" cmd/integration
 
 # Run cleanup to stop etcd on interrupt or other kill signal.
 trap cleanup EXIT
 
+# If a test case is specified, just run once with v1 API version and exit
+if [[ -n "${KUBE_TEST_ARGS}" ]]; then
+  runTests v1
+fi
+
 # Convert the CSV to an array of API versions to test
 IFS=';' read -a apiVersions <<< "${KUBE_TEST_API_VERSIONS}"
 for apiVersion in "${apiVersions[@]}"; do