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Merge pull request #29 from nova-wallet/fix/decode-signed-int
Fix signed int decoding and encoding
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| import XCTest | ||
| import SubstrateSdk | ||
| import BigInt | ||
|
|
||
| class SignedIntNodeTests: XCTestCase { | ||
| let typeRegistry = try! RuntimeHelper.createTypeRegistryCatalog( | ||
| from: "default", | ||
| networkName: "westend", | ||
| runtimeMetadataName: "westend-metadata" | ||
| ) | ||
|
|
||
| func testSignedIntEncodingDecoding() { | ||
| let bitLengths = [8, 16, 32, 64, 128, 256] | ||
|
|
||
| bitLengths.forEach { bitLength in | ||
| let type = "I\(bitLength)" | ||
| performEncodingDecodingTest(for: .stringValue("0"), type: type) | ||
| performEncodingDecodingTest(for: .stringValue("1"), type: type) | ||
| performEncodingDecodingTest(for: .stringValue("-1"), type: type) | ||
| performEncodingDecodingTest(for: .stringValue("127"), type: type) | ||
| performEncodingDecodingTest(for: .stringValue("-127"), type: type) | ||
| performEncodingDecodingTest(for: .stringValue("53"), type: type) | ||
| performEncodingDecodingTest(for: .stringValue("-53"), type: type) | ||
|
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||
| let typeValue = BigUInt(1) << (bitLength - 2) | ||
| let positiveValue = String(typeValue) | ||
| let negativeValue = "-" + String(typeValue) | ||
|
|
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| performEncodingDecodingTest(for: .stringValue(positiveValue), type: type) | ||
| performEncodingDecodingTest(for: .stringValue(negativeValue), type: type) | ||
| } | ||
| } | ||
|
|
||
| // MARK: Private | ||
|
|
||
| private func performEncodingDecodingTest(for value: JSON, type: String) { | ||
| do { | ||
| let encodedValue = try performEncoding(value: value, type: type) | ||
| try performDecodingTest(data: encodedValue, type: type, expected: value) | ||
| } catch { | ||
| XCTFail("Unexpected error: \(error)") | ||
| } | ||
| } | ||
|
|
||
| private func performDecodingTest(data: Data, type: String, expected: JSON) throws { | ||
| let decoder = try DynamicScaleDecoder(data: data, registry: typeRegistry, version: 45) | ||
| let result = try decoder.read(type: type) | ||
| XCTAssertEqual(expected, result) | ||
| XCTAssertEqual(decoder.remained, 0) | ||
| } | ||
|
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||
| private func performEncoding(value: JSON, type: String) throws -> Data { | ||
| let encoder = DynamicScaleEncoder(registry: typeRegistry, version: 45) | ||
| try encoder.append(json: value, type: type) | ||
| return try encoder.encode() | ||
| } | ||
| } |