ui: reintroduce end-to-end UI tests with cypress

A recent commit [1] removed the stale, unused end-to-end tests. In their
place, add newly-written tests that can run headlessly in TeamCity (via
Docker) as a quick-failing health check and as a more exhaustive suite.

[1] 3d171b2 (ui: remove unused end-to-end UI tests, 2022-07-25)

Release note: None

WORKSPACE

@@ -8,6 +8,7 @@ workspace(
         "@npm_protos": ["pkg/ui/workspaces/db-console/src/js/node_modules"],
         "@npm_cluster_ui": ["pkg/ui/workspaces/cluster_ui/node_modules"],
         "@npm_db_console": ["pkg/ui/workspaces/db-console/node_modules"],
+        "@npm_e2e_tests": ["pkg/ui/workspaces/e2e-tests/node_modules"],
     },
 )
 
@@ -263,6 +264,21 @@ yarn_install(
     symlink_node_modules = True,
 )
 
+yarn_install(
+    name = "npm_e2e_tests",
+    args = [
+        "--offline",
+    ],
+    data = [
+      "//pkg/ui:.yarnrc",
+      "@yarn_cache//:.seed",
+    ],
+    package_json = "//pkg/ui/workspaces/e2e-tests:package.json",
+    strict_visibility = False,
+    yarn_lock = "//pkg/ui/workspaces/e2e-tests:yarn.lock",
+    symlink_node_modules = True,
+)
+
 yarn_install(
     name = "npm_protos",
     args = [

build/teamcity/cockroach/ci/tests/ui_e2e_test_all.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+source "$(dirname "${0}")/teamcity-support.sh"
+source "./ui_e2e_test_impl.sh"
+
+tc_prepare
+
+tc_start_block "Build Docker image"
+build_docker_image
+tc_end_block "Build Docker image"
+
+# TeamCity doesn't restore permissions for files retrieved from artifact
+# dependencies, so ensure the cockroach binary is executable before running it
+# in a Docker container.
+chmod a+x upstream_artifacts/cockroach
+
+tc_start_block "Run all Cypress tests"
+run_tests
+tc_end_block "Run all Cypress tests"

build/teamcity/cockroach/ci/tests/ui_e2e_test_health.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+source "$(dirname "${0}")/teamcity-support.sh"
+source "./ui_e2e_test_impl.sh"
+
+tc_prepare
+
+tc_start_block "Build Docker image"
+build_docker_image
+tc_end_block "Build Docker image"
+
+# TeamCity doesn't restore permissions for files retrieved from artifact
+# dependencies, so ensure the cockroach binary is executable before running it
+# in a Docker container.
+chmod a+x upstream_artifacts/cockroach
+
+tc_start_block "Run Cypress health checks"
+run_tests health
+tc_end_block "Run Cypress health checks"

build/teamcity/cockroach/ci/tests/ui_e2e_test_impl.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+function build_docker_image() {
+  # Buffer noisy output and only print it on failure.
+  DOCKER_BUILDKIT=1 run docker build \
+    -f ./pkg/ui/workspaces/e2e-tests/Dockerfile \
+    -t cockroachdb/cockroach-cypress \
+    --progress=plain \
+    $PWD &> artifacts/docker-build.log || (cat artifacts/docker-build.log && false)
+  rm artifacts/docker-build.log
+}
+
+function run_tests() {
+  SPEC_ARG=""
+  if [ "health" = "${$1:='EMPTY'}" ]; then
+    SPEC_ARG="--spec 'cypress/e2e/health-check/**'"
+  fi
+
+  run docker run \
+    --rm \
+    -v $PWD/upstream_artifacts:/upstream_artifacts \
+    -v $PWD/artifacts:/artifacts \
+    cockroachdb/cockroach-cypress \
+    --reporter teamcity \
+    $SPEC_ARG
+}

pkg/cmd/dev/ui.go

@@ -17,6 +17,7 @@ import (
 	"os/signal"
 	"path"
 	"path/filepath"
+	"strings"
 
 	"github.com/spf13/cobra"
 )
@@ -39,6 +40,7 @@ func makeUICmd(d *dev) *cobra.Command {
 	uiCmd.AddCommand(makeUILintCmd(d))
 	uiCmd.AddCommand(makeUITestCmd(d))
 	uiCmd.AddCommand(makeUIWatchCmd(d))
+	uiCmd.AddCommand(makeUIE2eCmd(d))
 
 	return uiCmd
 }
@@ -49,6 +51,8 @@ type UIDirectories struct {
 	clusterUI string
 	// dbConsole is the absolute path to ./pkg/ui/workspaces/db-console.
 	dbConsole string
+	// e2eTests is the absolute path to ./pkg/ui/workspaces/e2e-tests.
+	e2eTests string
 	// eslintPlugin is the absolute path to ./pkg/ui/workspaces/eslint-plugin-crdb.
 	eslintPlugin string
 }
@@ -63,6 +67,7 @@ func getUIDirs(d *dev) (*UIDirectories, error) {
 	return &UIDirectories{
 		clusterUI:    path.Join(workspace, "./pkg/ui/workspaces/cluster-ui"),
 		dbConsole:    path.Join(workspace, "./pkg/ui/workspaces/db-console"),
+		e2eTests:			path.Join(workspace, "./pkg/ui/workspaces/e2e-tests"),
 		eslintPlugin: path.Join(workspace, "./pkg/ui/workspaces/eslint-plugin-crdb"),
 	}, nil
 }
@@ -552,6 +557,73 @@ Replaces 'make ui-test' and 'make ui-test-watch'.`,
 	return testCmd
 }
 
+func makeUIE2eCmd(d *dev) *cobra.Command {
+	e2eTestCmd := &cobra.Command{
+		Use: "e2e -- [args passed to Cypress ...]",
+		Short: "run e2e (Cypress) tests",
+		Long: strings.TrimSpace(`
+Run end-to-end tests with Cypress, spinning up a real local cluster and
+launching test in a real browser. Extra flags are passed directly to the
+'cypress' binary".
+`),
+		Args: cobra.ArbitraryArgs,
+		RunE: func(cmd *cobra.Command, commandLine []string) error {
+			ctx := cmd.Context()
+			uiDirs, err := getUIDirs(d)
+			if err != nil {
+				return err
+			}
+
+			workspace, err := d.getWorkspace(ctx)
+			if err != nil { 
+				return err
+			}
+
+			// Ensure e2e-tests dependencies are installed
+			installArgv := buildBazelYarnArgv("--cwd", uiDirs.e2eTests, "install")
+			logCommand("bazel", installArgv...)
+			err = d.exec.CommandContextInheritingStdStreams(ctx, "bazel", installArgv...)
+			if err != nil {
+				return fmt.Errorf("unable to install NPM dependencies: %w", err)
+			}
+
+			// Build cockroach (relying on Bazel to short-circuit repeated builds)
+			buildCockroachArgv := []string { 
+				"build",
+				"//pkg/cmd/cockroach:cockroach",
+				"--config=with_ui",
+			}
+			logCommand("bazel", buildCockroachArgv...)
+			err = d.exec.CommandContextInheritingStdStreams(ctx, "bazel", buildCockroachArgv...)
+			if err != nil {
+				return fmt.Errorf("unable to build cockroach with UI: %w", err)
+			}
+
+			// Run Cypress tests, passing any extra args through to 'cypress'
+			startCrdbMovrSh := path.Join(uiDirs.e2eTests, "build/start-crdb-movr.sh")
+			runCypressArgv := append(
+				[]string { "bazel" },
+				buildBazelYarnArgv("--cwd", uiDirs.e2eTests, "cy:run")...
+			)
+			runCypressArgv = append(runCypressArgv, cmd.Flags().Args()...)
+
+			logCommand(startCrdbMovrSh, runCypressArgv...)
+			env := append(
+				os.Environ(),
+				fmt.Sprintf("COCKROACH=%s", path.Join(workspace, "cockroach")),
+			)
+			err = d.exec.CommandContextWithEnv(ctx, env, startCrdbMovrSh, runCypressArgv...)
+			if err != nil {
+				return fmt.Errorf("error while running Cypress tests: %w", err)
+			}
+
+			return nil
+		},
+	}
+
+	return e2eTestCmd
+}
+
 // buildBazelYarnArgv returns the provided argv formatted so it can be run with
 // the bazel-provided version of yarn via `d.exec.CommandContextWithEnv`, e.g.:
 //

pkg/ui/BUILD.bazel

@@ -49,6 +49,7 @@ test_suite(
     tests = [
         "//pkg/ui/workspaces/cluster-ui:lint",
         "//pkg/ui/workspaces/db-console:lint",
+        "//pkg/ui/workspaces/e2e-tests:lint",
     ],
 )
 

pkg/ui/not-yarn-workspace.sh

@@ -7,6 +7,7 @@ set -euo pipefail
   yarn --cwd workspaces/db-console/src/js install
   yarn --cwd workspaces/cluster-ui install
   yarn --cwd workspaces/db-console install
+  yarn --cwd workspaces/e2e-tests install
 )
 
 cat << "EOF"

pkg/ui/workspaces/e2e-tests/.eslintrc.json

@@ -0,0 +1,17 @@
+{
+  "root": true,
+  "extends": "@cockroachlabs/eslint-config",
+  "settings": {
+    "react": {
+      "pragma": "React",
+      "version": "17.0"
+    }
+  },
+  "rules": {
+    "@typescript-eslint/no-inferrable-types": "off",
+    "@typescript-eslint/ban-types": "off",
+    "@typescript-eslint/no-unused-vars": "off",
+    "@typescript-eslint/explicit-module-boundary-types": "off",
+    "@typescript-eslint/no-explicit-any": "off"
+  }
+}

pkg/ui/workspaces/e2e-tests/.gitignore

@@ -0,0 +1,2 @@
+videos
+screenshots

pkg/ui/workspaces/e2e-tests/BUILD.bazel

@@ -0,0 +1,26 @@
+load("@npm_e2e_tests//eslint:index.bzl", "eslint_test")
+
+eslint_test(
+    name = "lint",
+    data = [
+        ".eslintrc.json",
+        "prettier.config.js",
+        "cypress",
+        "cypress.config.ts",
+        "//pkg/ui/workspaces/eslint-plugin-crdb",
+        "@npm_e2e_tests//@cockroachlabs/eslint-config",
+        "@npm_e2e_tests//@typescript-eslint/eslint-plugin",
+        "@npm_e2e_tests//@typescript-eslint/parser",
+        "@npm_e2e_tests//eslint-plugin-prettier",
+        "@npm_e2e_tests//eslint-plugin-react",
+        "@npm_e2e_tests//eslint-plugin-react-hooks",
+        "@npm_e2e_tests//prettier",
+    ],
+    templated_args = [
+        "--ext .ts",
+        "-c",
+        "$$(rlocation $(rootpath .eslintrc.json))",
+        "$$(rlocation $(rootpath cypress))",
+        "$$(rlocation $(rootpath cypress.config.ts))",
+    ],
+)

pkg/ui/workspaces/e2e-tests/Dockerfile

@@ -0,0 +1,51 @@
+# WARNING:
+# This Dockerfile must be built from the root of cockroachdb.git with a prebuilt
+# cockroach binary at ./upstream_artifactsl/cockroach. Running it from other
+# directories or without a prebuilt cockroach binary will cause errors.
+#
+# Build (from the root of cockroach.git):
+# $ DOCKER_BUILDKIT=1 docker build \
+#     -f ./pkg/ui/workspaces/e2e-tests/Dockerfile \
+#     -t cockroachdb/cockroach-ci-ui \
+#     $PWD
+#
+# Run Locally (from the root of cockroach.git):
+# $ docker run \
+#     --rm \
+#     -it \
+#     -v $PWD:/upstream_artifacts \
+#     -v $PWD/pkg/ui/workspaces/e2e-tests/cypress:/cypress
+#     cockroachdb/cockroach-ci-ui
+#
+# Run in TeamCity (from the root of cockroach.git):
+# $ docker run \
+#     --rm \
+#     -it \
+#     -v $PWD/upstream_artifacts:/upstream_artifacts \
+#     -v $PWD/artifacts:/artifacts \
+#     cockroachdb/cockroach-ci-ui
+
+FROM cypress/browsers:node16.14.2-slim-chrome100-ff99-edge
+
+# Install CRDB prerequisites
+RUN apt install libresolv-wrapper
+
+# Add the tests and install NPM dependencies
+WORKDIR /cypress
+COPY --chown=node ./pkg/ui/yarn-vendor ./yarn-vendor/
+COPY --chown=node ./pkg/ui/workspaces/e2e-tests ./
+ADD ./pkg/ui/.yarnrc ./
+RUN yarn install
+
+ENV IS_DOCKER=1
+
+# Use the compiled CRDB binary from a previous TC job via Artifact Dependency:
+# TODO(barag): include a TC link here
+# bazel-bin/pkg/cmd/cockroach/cockroach_/cockroach=>upstream_artifacts
+ENV COCKROACH=/upstream_artifacts/cockroach
+
+VOLUME /artifacts
+
+# Execute 'yarn test' by default, allowing extra arguments to be appended during
+# 'docker run'.
+ENTRYPOINT ["/usr/local/bin/yarn", "test"]

pkg/ui/workspaces/e2e-tests/Dockerfile.dockerignore

@@ -0,0 +1,6 @@
+**/*
+!upstream_artifacts
+!pkg/ui/.yarnrc
+!pkg/ui/yarn-vendor
+!pkg/ui/workspaces/e2e-tests
+pkg/ui/workspaces/e2e-tests/node_modules