Re-organise and extend path loading logic to make it easier to run integration tests using Delve/GoLand

Signed-off-by: James Munnelly <jmunnelly@apple.com>

internal/BUILD.bazel

@@ -16,6 +16,7 @@ filegroup(
         "//internal/apis/config/webhook:all-srcs",
         "//internal/apis/meta:all-srcs",
         "//internal/ingress:all-srcs",
+        "//internal/test/paths:all-srcs",
         "//internal/vault:all-srcs",
     ],
     tags = ["automanaged"],

internal/apis/acme/install/BUILD.bazel

@@ -45,8 +45,8 @@ go_test(
     embed = [":go_default_library"],
     deps = [
         "//internal/apis/acme/fuzzer:go_default_library",
+        "//internal/test/paths:go_default_library",
         "//pkg/api:go_default_library",
-        "//pkg/api/testing:go_default_library",
         "@com_github_munnerz_crd_schema_fuzz//:go_default_library",
         "@io_k8s_apimachinery//pkg/api/apitesting/roundtrip:go_default_library",
     ],

internal/apis/acme/install/pruning_test.go

@@ -22,8 +22,8 @@ import (
 	crdfuzz "github.com/munnerz/crd-schema-fuzz"
 
 	acmefuzzer "github.com/jetstack/cert-manager/internal/apis/acme/fuzzer"
+	apitesting "github.com/jetstack/cert-manager/internal/test/paths"
 	"github.com/jetstack/cert-manager/pkg/api"
-	apitesting "github.com/jetstack/cert-manager/pkg/api/testing"
 )
 
 func TestPruneTypes(t *testing.T) {

internal/apis/certmanager/install/BUILD.bazel

@@ -47,8 +47,8 @@ go_test(
     embed = [":go_default_library"],
     deps = [
         "//internal/apis/certmanager/fuzzer:go_default_library",
+        "//internal/test/paths:go_default_library",
         "//pkg/api:go_default_library",
-        "//pkg/api/testing:go_default_library",
         "@com_github_munnerz_crd_schema_fuzz//:go_default_library",
         "@io_k8s_apimachinery//pkg/api/apitesting/roundtrip:go_default_library",
     ],

internal/apis/certmanager/install/pruning_test.go

@@ -22,8 +22,8 @@ import (
 	crdfuzz "github.com/munnerz/crd-schema-fuzz"
 
 	cmfuzzer "github.com/jetstack/cert-manager/internal/apis/certmanager/fuzzer"
+	apitesting "github.com/jetstack/cert-manager/internal/test/paths"
 	"github.com/jetstack/cert-manager/pkg/api"
-	apitesting "github.com/jetstack/cert-manager/pkg/api/testing"
 )
 
 func TestPruneTypes(t *testing.T) {

internal/test/paths/BUILD.bazel

@@ -2,12 +2,15 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 
 go_library(
     name = "go_default_library",
-    srcs = ["bazel.go"],
+    srcs = [
+        "bazel.go",
+        "paths.go",
+    ],
     data = [
         "//deploy/crds:crds.yaml",
     ],
-    importpath = "github.com/jetstack/cert-manager/pkg/api/testing",
-    visibility = ["//visibility:public"],
+    importpath = "github.com/jetstack/cert-manager/internal/test/paths",
+    visibility = ["//:__subpackages__"],
 )
 
 filegroup(

internal/test/paths/bazel.go

@@ -14,7 +14,7 @@ See the License for the specific language governing permissions and
 limitations under the License.
 */
 
-package testing
+package paths
 
 import (
 	"fmt"
@@ -42,10 +42,7 @@ func PathForCRD(t *testing.T, name string) string {
 
 func CRDDirectory(t *testing.T) string {
 	runfiles := os.Getenv("RUNFILES_DIR")
-	// BAZEL_BIN_DIR allows the developer to set a path to the bazel bin directory.
-	// This allows for the tests to be ran outside of Bazel, for example with Delve
-	// the Bazel bin directory still needs to be generated using Bazel.
-	bazelDir := os.Getenv("BAZEL_BIN_DIR")
+	bazelDir := BazelBinDir
 	if runfiles == "" && bazelDir == "" {
 		t.Fatalf("integration tests can only run within 'bazel test' environment or have BAZEL_BIN_DIR set")
 	}

internal/test/paths/paths.go

@@ -0,0 +1,35 @@
+/*
+Copyright 2022 The cert-manager Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package paths
+
+import (
+	"path/filepath"
+	"runtime"
+)
+
+var (
+	_, b, _, _ = runtime.Caller(0)
+
+	// ModuleRootDir is the filesystem path to the root of the repository.
+	ModuleRootDir = filepath.Join(filepath.Dir(b), "../../..")
+
+	// BazelBinDir is the filesystem path to the bazel-bin directory within the
+	// root of the repository.
+	// This will not be accessible when running within the bazel sandbox, but
+	// is useful for reading bazel files when running commands with `go test`.
+	BazelBinDir = filepath.Join(ModuleRootDir, "bazel-bin")
+)

pkg/api/BUILD.bazel

@@ -38,7 +38,6 @@ filegroup(
     name = "all-srcs",
     srcs = [
         ":package-srcs",
-        "//pkg/api/testing:all-srcs",
         "//pkg/api/util:all-srcs",
     ],
     tags = ["automanaged"],

test/integration/framework/BUILD.bazel

@@ -11,8 +11,8 @@ go_library(
     deps = [
         "//cmd/webhook/app:go_default_library",
         "//cmd/webhook/app/testing:go_default_library",
+        "//internal/test/paths:go_default_library",
         "//pkg/api:go_default_library",
-        "//pkg/api/testing:go_default_library",
         "//pkg/client/clientset/versioned:go_default_library",
         "//pkg/client/informers/externalversions:go_default_library",
         "//pkg/controller:go_default_library",

test/integration/framework/apiserver.go

@@ -40,8 +40,8 @@ import (
 
 	"github.com/jetstack/cert-manager/cmd/webhook/app"
 	webhooktesting "github.com/jetstack/cert-manager/cmd/webhook/app/testing"
+	"github.com/jetstack/cert-manager/internal/test/paths"
 	"github.com/jetstack/cert-manager/pkg/api"
-	apitesting "github.com/jetstack/cert-manager/pkg/api/testing"
 	"github.com/jetstack/cert-manager/pkg/webhook/handlers"
 	"github.com/jetstack/cert-manager/test/internal/apiserver"
 )
@@ -75,7 +75,7 @@ func WithWebhookConversionHandler(handler handlers.ConversionHook) RunControlPla
 
 func RunControlPlane(t *testing.T, ctx context.Context, optionFunctions ...RunControlPlaneOption) (*rest.Config, StopFunc) {
 	options := &controlPlaneOptions{
-		crdsDir: pointer.StringPtr(apitesting.CRDDirectory(t)),
+		crdsDir: pointer.StringPtr(paths.CRDDirectory(t)),
 	}
 
 	for _, f := range optionFunctions {

test/internal/apiserver/BUILD.bazel

@@ -14,6 +14,7 @@ go_library(
     importpath = "github.com/jetstack/cert-manager/test/internal/apiserver",
     visibility = ["//test:__subpackages__"],
     deps = [
+        "//internal/test/paths:go_default_library",
         "//test/internal/util:go_default_library",
         "@io_k8s_sigs_controller_runtime//pkg/envtest:go_default_library",
     ],

test/internal/apiserver/envs.go

@@ -20,7 +20,9 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"path/filepath"
 
+	"github.com/jetstack/cert-manager/internal/test/paths"
 	"github.com/jetstack/cert-manager/test/internal/util"
 )
 
@@ -45,11 +47,21 @@ Either re-run this test or set the %s environment variable.`, bin, key))
 }
 
 func getPath(name string, path ...string) (string, error) {
+	// Check to see if we are running in a `bazel test` environment and if so,
+	// use the RUNFILES_DIR environment variable to find dependencies.
 	bazelPath := util.GetTestPath(path...)
 	p, err := exec.LookPath(bazelPath)
 	if err == nil {
 		return p, nil
 	}
 
+	// Check for a bazel-bin directory which may contain the test dependencies
+	nextBazelPath := filepath.Join(append([]string{paths.BazelBinDir}, path...)...)
+	p, err = exec.LookPath(nextBazelPath)
+	if err == nil {
+		return p, nil
+	}
+
+	// Otherwise check the users PATH
 	return exec.LookPath(name)
 }