google.golang.org/genproto/googleapis/api v0.0.0-20251029180050-ab9386a59fda

# Google APIs LaunchStage Enum Verification

This sample verifies the enum values, reflection behavior, and descriptor properties of `google.golang.org/genproto/googleapis/api.LaunchStage` in `google.golang.org/genproto/googleapis/api` at version `v0.0.0-20251029180050-ab9386a59fda`.

## Observed Behavior

1. **Enum Value Mapping**:
   - `LaunchStage_LAUNCH_STAGE_UNSPECIFIED` = 0
   - `LaunchStage_EARLY_ACCESS` = 1
   - `LaunchStage_ALPHA` = 2
   - `LaunchStage_BETA` = 3
   - `LaunchStage_GA` = 4
   - `LaunchStage_DEPRECATED` = 5
   - `LaunchStage_UNIMPLEMENTED` = 6
   - `LaunchStage_PRELAUNCH` = 7

2. **String and Protoreflect Integration**:
   - `LaunchStage.String()` returns canonical string representations matching the protobuf enum value names without the `LaunchStage_` prefix.
   - `LaunchStage.Number()` returns a `protoreflect.EnumNumber` equal to the underlying integer value.
   - `LaunchStage.Enum()` returns a typed pointer referencing the current `LaunchStage` value.

3. **Descriptor Inspection**:
   - `LaunchStage.Descriptor()` returns the protobuf enum descriptor with name `LaunchStage` containing all 8 defined value descriptors.

Clean-room public code sample — generation instructions

Write a brand-new, minimal, self-contained code sample in this clean-room directory.
Do not copy, paraphrase, or reference any existing project source. Work only from this spec.

A csx.json manifest scaffold already exists. Do not recreate it from memory. Preserve its case.goal, packages and symbols; fill its empty case.contract with exact assertions and correct its environment, commands and verifierAdapter for the files you generate.

Goal: verify pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda
Kind: HOW

Use EXACTLY these public packages and versions:
  - pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda

Rules:
  - One focused purpose; the smallest project that proves the goal.
  - Include a contract test (test/contract.*) that runs OFFLINE and exits 0 exactly when the goal behavior works.
  - Pin every dependency with a lockfile so resolution is reproducible.
  - No secrets, credentials, or tokens. No real URLs (only example.com or localhost). No absolute paths.
  - No personal names, emails, company names, or project identifiers of any kind.
  - No binaries and no generated output (node_modules, dist, target, venv, .git, .env).
  - Keep it under 200 files and 256KB packed.

{"case":{"caseId":"case:sha256:164d7fea06785fca459db8f4f08a439ba5d64083935b2826054fda560ae4f047","contract":["LaunchStage enum constants map to defined numeric values from UNSPECIFIED (0) through PRELAUNCH (7)","LaunchStage.String() returns canonical string representations matching enum names","LaunchStage.Number() returns protoreflect.EnumNumber matching the underlying int32 value","LaunchStage.Enum() returns a typed pointer referencing the current LaunchStage value","LaunchStage.Descriptor() provides valid protoreflect.EnumDescriptor with name 'LaunchStage' containing 8 defined values","GetLaunchStageName and IsGA helper functions correctly evaluate LaunchStage values"],"goal":"verify pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda","kind":"HOW","packages":["pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda"],"schemaVersion":1},"contractCommand":["go","run","./test"],"environment":{"arch":"x64","distro":"ubuntu","ecosystem":"golang","libc":"glibc","libcVersion":"2.39","os":"linux","osVersionBucket":"24","packageManager":"go","schemaVersion":1},"license":"MIT-0","packages":["pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda"],"schemaVersion":1,"subject":"pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda","verifierAdapter":"golang@1"}

module sample

go 1.24.0

require (
	google.golang.org/genproto/googleapis/api v0.0.0-20251029180050-ab9386a59fda
	google.golang.org/protobuf v1.36.10
)

github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
google.golang.org/genproto/googleapis/api v0.0.0-20251029180050-ab9386a59fda h1:+2XxjfsAu6vqFxwGBRcHiMaDCuZiqXGDUDVWVtrFAnE=
google.golang.org/genproto/googleapis/api v0.0.0-20251029180050-ab9386a59fda/go.mod h1:fDMmzKV90WSg1NbozdqrE64fkuTv6mlq2zxo9ad+3yo=
google.golang.org/protobuf v1.36.10 h1:AYd7cD/uASjIL6Q9LiTjz8JLcrh/88q5UObnmY3aOOE=
google.golang.org/protobuf v1.36.10/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=

package sample

import (
	"google.golang.org/genproto/googleapis/api"
)

// GetLaunchStageName returns the canonical string name of a LaunchStage.
func GetLaunchStageName(stage api.LaunchStage) string {
	return stage.String()
}

// IsGA returns true if the launch stage is GA.
func IsGA(stage api.LaunchStage) bool {
	return stage == api.LaunchStage_GA
}

// IsEarlyAccess returns true if the launch stage is EARLY_ACCESS.
func IsEarlyAccess(stage api.LaunchStage) bool {
	return stage == api.LaunchStage_EARLY_ACCESS
}

{
  "schemaVersion": 1,
  "goal": "verify pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda",
  "kind": "HOW",
  "packages": [
    "pkg:golang/google.golang.org/genproto/googleapis/api@v0.0.0-20251029180050-ab9386a59fda"
  ]
}

package main

import (
	"fmt"
	"os"

	"google.golang.org/genproto/googleapis/api"
	"google.golang.org/protobuf/reflect/protoreflect"
	"sample"
)

func main() {
	// Assertion 1: LaunchStage enum constants map to defined numeric values from UNSPECIFIED (0) through PRELAUNCH (7)
	testCases := []struct {
		stage    api.LaunchStage
		expected int32
		strName  string
	}{
		{api.LaunchStage_LAUNCH_STAGE_UNSPECIFIED, 0, "LAUNCH_STAGE_UNSPECIFIED"},
		{api.LaunchStage_EARLY_ACCESS, 1, "EARLY_ACCESS"},
		{api.LaunchStage_ALPHA, 2, "ALPHA"},
		{api.LaunchStage_BETA, 3, "BETA"},
		{api.LaunchStage_GA, 4, "GA"},
		{api.LaunchStage_DEPRECATED, 5, "DEPRECATED"},
		{api.LaunchStage_UNIMPLEMENTED, 6, "UNIMPLEMENTED"},
		{api.LaunchStage_PRELAUNCH, 7, "PRELAUNCH"},
	}

	for _, tc := range testCases {
		if int32(tc.stage) != tc.expected {
			fmt.Fprintf(os.Stderr, "expected int32 value %d for %s, got %d\n", tc.expected, tc.strName, int32(tc.stage))
			os.Exit(1)
		}

		// Assertion 2: LaunchStage.String() returns canonical string representations matching enum names
		if tc.stage.String() != tc.strName {
			fmt.Fprintf(os.Stderr, "expected String() %q for stage %d, got %q\n", tc.strName, tc.expected, tc.stage.String())
			os.Exit(1)
		}

		// Assertion 3: LaunchStage.Number() returns protoreflect.EnumNumber matching the underlying int32 value
		if tc.stage.Number() != protoreflect.EnumNumber(tc.expected) {
			fmt.Fprintf(os.Stderr, "expected Number() %d for %s, got %d\n", tc.expected, tc.strName, tc.stage.Number())
			os.Exit(1)
		}

		// Assertion 4: LaunchStage.Enum() returns a typed pointer referencing the current LaunchStage value
		enumPtr := tc.stage.Enum()
		if enumPtr == nil || *enumPtr != tc.stage {
			fmt.Fprintf(os.Stderr, "expected Enum() pointer to hold %v, got %v\n", tc.stage, enumPtr)
			os.Exit(1)
		}
	}

	// Assertion 5: LaunchStage.Descriptor() provides valid protoreflect.EnumDescriptor with name 'LaunchStage' containing 8 defined values
	desc := api.LaunchStage_GA.Descriptor()
	if desc == nil {
		fmt.Fprintf(os.Stderr, "expected non-nil EnumDescriptor from LaunchStage.Descriptor()\n")
		os.Exit(1)
	}
	if desc.Name() != "LaunchStage" {
		fmt.Fprintf(os.Stderr, "expected EnumDescriptor name 'LaunchStage', got %q\n", desc.Name())
		os.Exit(1)
	}
	values := desc.Values()
	if values.Len() != 8 {
		fmt.Fprintf(os.Stderr, "expected 8 enum values in descriptor, got %d\n", values.Len())
		os.Exit(1)
	}

	// Assertion 6: GetLaunchStageName and IsGA helper functions correctly evaluate LaunchStage values
	if name := sample.GetLaunchStageName(api.LaunchStage_GA); name != "GA" {
		fmt.Fprintf(os.Stderr, "expected 'GA', got %q\n", name)
		os.Exit(1)
	}
	if !sample.IsGA(api.LaunchStage_GA) {
		fmt.Fprintf(os.Stderr, "expected IsGA to be true for LaunchStage_GA\n")
		os.Exit(1)
	}
	if sample.IsGA(api.LaunchStage_BETA) {
		fmt.Fprintf(os.Stderr, "expected IsGA to be false for LaunchStage_BETA\n")
		os.Exit(1)
	}

	fmt.Println("All LaunchStage contract assertions passed.")
}