Binary Content Matching is odd - cross platform/arch

[YOU54F]

Smells

Cross CI provider and cross arch has shown a few inconsistencies in content-type matching, which is clearly demonstrable here. Haven't thought of a solution just yet, but this at least highlights and allows us to test more combinations than before

Encountered in #444 (comment)

If you have code that looks like this, there is a definite code-smell

pact-js-core/test/consumer.integration.spec.ts

Lines 23 to 34 in facfef8

	const isWin = process.platform === 'win32';
	const isLinux = process.platform === 'linux';
	const isDarwinArm64 = process.platform === 'darwin' && process.arch === 'arm64';
	const isDarwinX64 = process.platform === 'darwin' && process.arch === 'x64';
	const isLinuxArm64 = process.platform === 'linux' && process.arch === 'arm64';
	const isCirrusCi = process.env['CIRRUS_CI'] === 'true';
	const usesOctetStream =
	isLinuxArm64 ||
	isWin ||
	isDarwinArm64 ||
	(isCirrusCi && isLinux) ||
	(isCirrusCi && isDarwinX64);

The condition is used in these tests

pact-js-core/test/consumer.integration.spec.ts

Lines 77 to 87 in dac0e46

	it('generates a pact with success', () =>
	axios
	.request({
	baseURL: `http://${HOST}:${port}`,
	headers: {
	'content-type': usesOctetStream
	? 'application/octet-stream'
	: 'application/gzip',
	Accept: 'application/json',
	'x-special-header': 'header',
	},

pact-js-core/test/message.integration.spec.ts

Lines 94 to 109 in dac0e46

	// See https://github.com/pact-foundation/pact-reference/issues/171 for why we have an OS switch here
	// Windows: does not have magic mime matcher, uses content-type
	// OSX on CI: does not magic mime matcher, uses content-type
	// OSX: has magic mime matcher, sniffs content
	// Linux: has magic mime matcher, sniffs content
	describe('with binary data', () => {
	it('generates a pact with success', () => {
	const message = pact.newAsynchronousMessage('');
	message.expectsToReceive('a binary event');
	message.given('some state');
	message.givenWithParam('some state 2', 'state2 key', 'state2 val');
	message.withBinaryContents(
	bytes,
	usesOctetStream ? 'application/octet-stream' : 'application/gzip'
	);
	message.withMetadata('meta-key', 'meta-val');

See pact-foundation/pact-reference#171 for why we have an OS switch here
Windows: does not have magic mime matcher, uses content-type
OSX on CI: does not magic mime matcher, uses content-type
OSX: has magic mime matcher, sniffs content
Linux: has magic mime matcher, sniffs content

So based on our compat table of

OS	Amd64	Arm64
Linux (glibc)	✅	✅
Mac	✅	✅
Windows	✅	❌
Linux (alpine)	❌	❌

✅ = supported
❌ = not supported

We have a few different ways we can test to cover different arch combinations

• Locally
• Locally with GitHub Actions / Act
• GitHub Actions
• Locally with Cirrus CLI
• Cirrus CI

OS	Amd64	Arm64	Amd64 (GH)	Amd64 (GH Act)	Amd64 (Cirrus)	Arm64 (Cirrus CI)	Amd64 (Cirrus CLI)	Arm64 (Cirrus CLI)
Linux (glibc)	❓	❓	❓	❓	❓	❓	❓	❓
Mac	❓	❓	❓	❌	❓	❓	❓	❓
Windows	❓	❌	❓	❌	❓	❌	❓	❌
Linux (alpine)	❌	❌	❌	❌	❌	❌	❌	❌

❓ = needs test evidence
❌ = not supported, or untestable on platform

[damusix]

@YOU54F Running into a similar issue on Mac Arm64:

error @pact-foundation/[email protected]: The CPU architecture "arm64" is incompatible with this module.
error Found incompatible module.

[YOU54F]

hi this isnt the same issue, you are running an old version of pact-node which has never supported arm64

[YOU54F]

you can run pact-node with rosetta or vote on this issue #489 to bring native arm support to pact-node

or migrate to pact-js-core which supports arm64 on macos and linux

[YOU54F]

fyi this related issue is where rosetta was supported for pact-node on macos

#264

youll need a version bump to 10.x as described in the linked issue to get it working with rosetta
👍🏽

[damusix]

@YOU54F Thank you sir, let me look into this

[YOU54F]

So it appears installing shared-mime-info in arm64 containers will result in the same behaviour on Linux

Debian

apt install shared-mime-info

Alpine

apk add shared-mime-info

[YOU54F]

Fixed as part of pact-foundation/pact-reference#429

will be sorted in 0.4.21 release of the pact_ffi which can then be consumed in here

[YOU54F]

Fixed in

• Pact-JS-Core from v15.0.0
• Pact-Core from from v13.0.0

[mefellows]

Amazing work @YOU54F! 👏