Languages

All six adapters implement the same providers and the same interface. Every suite runs the providers’ signature test vectors and the same mocked-provider cases, 414 tests in total, and each language has a live eSewa and Fonepay sandbox check.

Language	Runtime	Dependencies	Tests	Source
TypeScript	Node 22.18+, Bun, Deno, Workers, Next.js edge	Zero dependencies	49	scripts/ts/src/
Python	Python 3.10+	Stdlib (cryptography for connectIPS)	33	scripts/python/nepal_payments/
Java	JDK 17+ (Spring Boot, Quarkus)	No dependencies	111	scripts/java/src/main/java/np/payments/
Kotlin	JDK 17+ (Ktor, Spring), suspend API	kotlin-stdlib only	84	scripts/kotlin/src/main/kotlin/np/payments/
PHP	PHP 8.1+ (Laravel, Symfony)	ext-curl and ext-openssl, no Composer deps	69	scripts/php/src/
Go	Go 1.22+	Stdlib only	68	scripts/go/payments/

Run the tests

From skills/nepal-payments/scripts:

(cd ts && npm ci && npm test && npm run typecheck)
(cd python && python -m unittest discover -s tests)   # connectIPS tests need `pip install cryptography`
(cd java && ./gradlew test)
(cd kotlin && ./gradlew test)
(cd php && composer install && vendor/bin/phpunit)
(cd go && go test -race ./...)

No local PHP? Run each PHP command in Docker: docker run --rm -v "$PWD":/app -w /app composer:2 <command>.

Live sandbox checks

node test/sandbox.ts       # TypeScript (add KHALTI_SECRET_KEY=... for Khalti)
./gradlew sandbox          # Java, Kotlin
php tests/sandbox.php      # PHP
go run ./cmd/sandbox       # Go

TypeScript also has an end-to-end demo against the eSewa and Fonepay sandboxes: cd ts && node examples/server.ts, then open http://localhost:3000.

Other languages

For C#, Ruby, Rust or a Dart server, port from the TypeScript adapter of each provider. Write the provider’s test vectors as tests first (each provider page has them), port until they pass, then run the sandbox checks in Testing and go-live.