Rework e2e tests (#36634)

- Replace the e2e tests initialization with a simple bash script,
removing the previous Go harness.
- `make test-e2e` is the single entry point. It always starts a fully
isolated ephemeral Gitea instance with its own temp directory, SQLite
database, and config — no interference with the developer's running
instance.
- A separate `gitea-e2e` binary is built via `EXECUTABLE_E2E` using
`TEST_TAGS` (auto-includes sqlite with `CGO_ENABLED=1`), keeping the
developer's regular `gitea` binary untouched.
- No more split into database-specific e2e tests. Test timeouts are
strict, can be relaxed later if needed.
- Simplified and streamlined the playwright config and test files.
- Remove all output generation of playwright and all references to
visual testing.
- Tests run on Chrome locally, Chrome + Firefox on CI.
- Simplified CI workflow — visible separate steps for frontend, backend,
and test execution.
- All exported env vars use `GITEA_TEST_E2E_*` prefix.
- Use `GITEA_TEST_E2E_FLAGS` to pass flags to playwright, e.g.
`GITEA_TEST_E2E_FLAGS="--ui" make test-e2e` for UI mode or
`GITEA_TEST_E2E_FLAGS="--headed" make test-e2e` for headed mode.
- Use `GITEA_TEST_E2E_DEBUG=1 make test-e2e` to show Gitea server
output.

---------

Signed-off-by: silverwind <me@silverwind.io>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Makefile

@@ -53,9 +53,11 @@ endif
 ifeq ($(IS_WINDOWS),yes)
 	GOFLAGS := -v -buildmode=exe
 	EXECUTABLE ?= gitea.exe
+	EXECUTABLE_E2E ?= gitea-e2e.exe
 else
 	GOFLAGS := -v
 	EXECUTABLE ?= gitea
+	EXECUTABLE_E2E ?= gitea-e2e
 endif
 
 ifeq ($(shell sed --version 2>/dev/null | grep -q GNU && echo gnu),gnu)
@@ -115,7 +117,7 @@ LDFLAGS := $(LDFLAGS) -X "main.Version=$(GITEA_VERSION)" -X "main.Tags=$(TAGS)"
 
 LINUX_ARCHS ?= linux/amd64,linux/386,linux/arm-5,linux/arm-6,linux/arm64,linux/riscv64
 
-GO_TEST_PACKAGES ?= $(filter-out $(shell $(GO) list code.gitea.io/gitea/models/migrations/...) code.gitea.io/gitea/tests/integration/migration-test code.gitea.io/gitea/tests code.gitea.io/gitea/tests/integration code.gitea.io/gitea/tests/e2e,$(shell $(GO) list ./... | grep -v /vendor/))
+GO_TEST_PACKAGES ?= $(filter-out $(shell $(GO) list code.gitea.io/gitea/models/migrations/...) code.gitea.io/gitea/tests/integration/migration-test code.gitea.io/gitea/tests code.gitea.io/gitea/tests/integration,$(shell $(GO) list ./... | grep -v /vendor/))
 MIGRATE_TEST_PACKAGES ?= $(shell $(GO) list code.gitea.io/gitea/models/migrations/...)
 
 WEBPACK_SOURCES := $(shell find web_src/js web_src/css -type f)
@@ -153,10 +155,6 @@ GO_SOURCES := $(wildcard *.go)
 GO_SOURCES += $(shell find $(GO_DIRS) -type f -name "*.go")
 GO_SOURCES += $(GENERATED_GO_DEST)
 
-# Force installation of playwright dependencies by setting this flag
-ifdef DEPS_PLAYWRIGHT
-	PLAYWRIGHT_FLAGS += --with-deps
-endif
 
 SWAGGER_SPEC := templates/swagger/v1_json.tmpl
 SWAGGER_SPEC_INPUT := templates/swagger/v1_input.json
@@ -187,7 +185,7 @@ all: build
 .PHONY: help
 help: Makefile ## print Makefile help information.
 	@awk 'BEGIN {FS = ":.*##"; printf "\nUsage:\n  make \033[36m[TARGETS] default target: build\033[0m\n\n\033[35mTargets:\033[0m\n"} /^[0-9A-Za-z._-]+:.*?##/ { printf "  \033[36m%-45s\033[0m %s\n", $$1, $$2 }' Makefile #$(MAKEFILE_LIST)
-	@printf "  \033[36m%-46s\033[0m %s\n" "test-e2e[#TestSpecificName]" "test end to end using playwright"
+	@printf "  \033[36m%-46s\033[0m %s\n" "test-e2e" "test end to end using playwright"
 	@printf "  \033[36m%-46s\033[0m %s\n" "test[#TestSpecificName]" "run unit test"
 	@printf "  \033[36m%-46s\033[0m %s\n" "test-sqlite[#TestSpecificName]" "run integration test for sqlite"
 
@@ -204,9 +202,8 @@ clean-all: clean ## delete backend, frontend and integration files
 
 .PHONY: clean
 clean: ## delete backend and integration files
-	rm -rf $(EXECUTABLE) $(DIST) $(BINDATA_DEST_WILDCARD) \
+	rm -rf $(EXECUTABLE) $(EXECUTABLE_E2E) $(DIST) $(BINDATA_DEST_WILDCARD) \
 		integrations*.test \
-		e2e*.test \
 		tests/integration/gitea-integration-* \
 		tests/integration/indexers-* \
 		tests/sqlite.ini tests/mysql.ini tests/pgsql.ini tests/mssql.ini man/ \
@@ -535,47 +532,12 @@ test-mssql-migration: migrations.mssql.test migrations.individual.mssql.test
 
 .PHONY: playwright
 playwright: deps-frontend
-	$(NODE_VARS) pnpm exec playwright install $(PLAYWRIGHT_FLAGS)
-
-.PHONY: test-e2e%
-test-e2e%: TEST_TYPE ?= e2e
-	# Clear display env variable. Otherwise, chromium tests can fail.
-	DISPLAY=
+	@# on GitHub Actions VMs, playwright's system deps are pre-installed
+	@$(NODE_VARS) pnpm exec playwright install $(if $(GITHUB_ACTIONS),,--with-deps) chromium $(if $(CI),firefox) $(PLAYWRIGHT_FLAGS)
 
 .PHONY: test-e2e
-test-e2e: test-e2e-sqlite
-
-.PHONY: test-e2e-sqlite
-test-e2e-sqlite: playwright e2e.sqlite.test generate-ini-sqlite
-	GITEA_TEST_CONF=tests/sqlite.ini ./e2e.sqlite.test
-
-.PHONY: test-e2e-sqlite\#%
-test-e2e-sqlite\#%: playwright e2e.sqlite.test generate-ini-sqlite
-	GITEA_TEST_CONF=tests/sqlite.ini ./e2e.sqlite.test -test.run TestE2e/$*
-
-.PHONY: test-e2e-mysql
-test-e2e-mysql: playwright e2e.mysql.test generate-ini-mysql
-	GITEA_TEST_CONF=tests/mysql.ini ./e2e.mysql.test
-
-.PHONY: test-e2e-mysql\#%
-test-e2e-mysql\#%: playwright e2e.mysql.test generate-ini-mysql
-	GITEA_TEST_CONF=tests/mysql.ini ./e2e.mysql.test -test.run TestE2e/$*
-
-.PHONY: test-e2e-pgsql
-test-e2e-pgsql: playwright e2e.pgsql.test generate-ini-pgsql
-	GITEA_TEST_CONF=tests/pgsql.ini ./e2e.pgsql.test
-
-.PHONY: test-e2e-pgsql\#%
-test-e2e-pgsql\#%: playwright e2e.pgsql.test generate-ini-pgsql
-	GITEA_TEST_CONF=tests/pgsql.ini ./e2e.pgsql.test -test.run TestE2e/$*
-
-.PHONY: test-e2e-mssql
-test-e2e-mssql: playwright e2e.mssql.test generate-ini-mssql
-	GITEA_TEST_CONF=tests/mssql.ini ./e2e.mssql.test
-
-.PHONY: test-e2e-mssql\#%
-test-e2e-mssql\#%: playwright e2e.mssql.test generate-ini-mssql
-	GITEA_TEST_CONF=tests/mssql.ini ./e2e.mssql.test -test.run TestE2e/$*
+test-e2e: playwright $(EXECUTABLE_E2E)
+	@EXECUTABLE=$(EXECUTABLE_E2E) ./tools/test-e2e.sh $(GITEA_TEST_E2E_FLAGS)
 
 .PHONY: bench-sqlite
 bench-sqlite: integrations.sqlite.test generate-ini-sqlite
@@ -671,18 +633,6 @@ migrations.individual.sqlite.test: $(GO_SOURCES) generate-ini-sqlite
 migrations.individual.sqlite.test\#%: $(GO_SOURCES) generate-ini-sqlite
 	GITEA_TEST_CONF=tests/sqlite.ini $(GO) test $(GOTESTFLAGS) -tags '$(TEST_TAGS)' code.gitea.io/gitea/models/migrations/$*
 
-e2e.mysql.test: $(GO_SOURCES)
-	$(GO) test $(GOTESTFLAGS) -c code.gitea.io/gitea/tests/e2e -o e2e.mysql.test
-
-e2e.pgsql.test: $(GO_SOURCES)
-	$(GO) test $(GOTESTFLAGS) -c code.gitea.io/gitea/tests/e2e -o e2e.pgsql.test
-
-e2e.mssql.test: $(GO_SOURCES)
-	$(GO) test $(GOTESTFLAGS) -c code.gitea.io/gitea/tests/e2e -o e2e.mssql.test
-
-e2e.sqlite.test: $(GO_SOURCES)
-	$(GO) test $(GOTESTFLAGS) -c code.gitea.io/gitea/tests/e2e -o e2e.sqlite.test -tags '$(TEST_TAGS)'
-
 .PHONY: check
 check: test
 
@@ -721,6 +671,9 @@ ifneq ($(and $(STATIC),$(findstring pam,$(TAGS))),)
 endif
 	CGO_ENABLED="$(CGO_ENABLED)" CGO_CFLAGS="$(CGO_CFLAGS)" $(GO) build $(GOFLAGS) $(EXTRA_GOFLAGS) -tags '$(TAGS)' -ldflags '-s -w $(EXTLDFLAGS) $(LDFLAGS)' -o $@
 
+$(EXECUTABLE_E2E): $(GO_SOURCES)
+	CGO_ENABLED=1 $(GO) build $(GOFLAGS) $(EXTRA_GOFLAGS) -tags '$(TEST_TAGS)' -ldflags '-s -w $(EXTLDFLAGS) $(LDFLAGS)' -o $@
+
 .PHONY: release
 release: frontend generate release-windows release-linux release-darwin release-freebsd release-copy release-compress vendor release-sources release-check