test: add e2e tests for shp buildrun gather

Signed-off-by: karthik balasubramanian <karthikbalasubramanian08@gmail.com>

Author: kaizakin

test/e2e/buildrun-gather.bats

@@ -0,0 +1,55 @@
+#!/usr/bin/env bats
+
+source test/e2e/helpers.sh
+
+setup() {
+  load 'bats/support/load'
+  load 'bats/assert/load'
+  load 'bats/file/load'
+}
+
+teardown() {
+  run kubectl delete builds.shipwright.io --all
+  run kubectl delete buildruns.shipwright.io --all
+  run kubectl delete buildstrategies.shipwright.io --all
+}
+
+@test "shp buildrun gather collects BuildRun diagnostics" {
+  build_name=$(random_name)
+  buildrun_name=$(random_name)
+  output_image=$(get_output_image build-e2e)
+
+  run shp build create ${build_name} \
+  --source-git-url=https://github.com/shipwright-io/sample-go \
+  --source-context-dir=source-build \
+  --output-image=${output_image}
+  assert_success
+
+  run shp buildrun create ${buildrun_name} --buildref-name=${build_name}
+  assert_success
+
+  # verify that logs exist
+  run shp buildrun logs --follow ${buildrun_name}
+  assert_success
+
+  # verify gathering of buildrun diagnostics
+  run shp buildrun gather ${buildrun_name} --output "${BATS_TEST_TMPDIR}"
+  assert_success
+  assert_output --partial "BuildRun diagnostics written to"
+
+  gather_dir="${BATS_TEST_TMPDIR}/buildrun-${buildrun_name}-gather"
+  assert_file_exist "${gather_dir}/buildrun.yaml"
+  assert_file_exist "${gather_dir}/taskrun.yaml"
+  assert_file_exist "${gather_dir}/pod.yaml"
+
+  # ensure log files exist in logs/ directory
+  run find "${gather_dir}/logs" -type f -name "*.log"
+  assert_success
+  refute_output ""
+
+  # shp buildrun gather --archive writes diagnostics as a .tar.gz archive
+  run shp buildrun gather ${buildrun_name} --output "${BATS_TEST_TMPDIR}/archive" --archive
+  assert_success
+  assert_file_exist "${BATS_TEST_TMPDIR}/archive/buildrun-${buildrun_name}-gather.tar.gz"
+  refute_file_exist "${BATS_TEST_TMPDIR}/archive/buildrun-${buildrun_name}-gather"
+}