fmt — validation proof
Go’s own fmt test suite, converted to C# by go2cs, built against the converted standard
library, run under the Go-semantics test host, and compared verdict for verdict against a clean
go test -json baseline of the same sources. This page is generated by the converter from that
comparison — it is the evidence behind the fmt row in
Validated Test Packages.
Validated 2026-08-25 · converter a338d351d
63 matched · 0 disclosed — Go 1.23.12, windows/amd64, converted package
src/core/fmt.
Both runtimes skip 1 of the matched tests identically.
Verdicts
| Test | go test |
go2cs |
|---|---|---|
TestAppend |
pass | pass |
TestAppendf |
pass | pass |
TestAppendln |
pass | pass |
TestBadVerbRecursion |
pass | pass |
TestBlank |
pass | pass |
TestBlankln |
pass | pass |
TestComplexFormatting |
pass | pass |
TestCountMallocs |
skip | skip |
TestEOF |
pass | pass |
TestEOFAllTypes |
pass | pass |
TestEOFAtEndOfInput |
pass | pass |
TestEmptyMap |
pass | pass |
TestErrorf |
pass | pass |
TestFlagParser |
pass | pass |
TestFmtInterface |
pass | pass |
TestFormatString |
pass | pass |
TestFormatterFlags |
pass | pass |
TestFormatterPrintln |
pass | pass |
TestHexByte |
pass | pass |
TestHexBytes |
pass | pass |
TestInf |
pass | pass |
TestIsSpace |
pass | pass |
TestLineByLineFscanf |
pass | pass |
TestMapPrinter |
pass | pass |
TestMultiLine |
pass | pass |
TestNaN |
pass | pass |
TestNilDoesNotBecomeTyped |
pass | pass |
TestPanics |
pass | pass |
TestParsenum |
pass | pass |
TestReorder |
pass | pass |
TestScan |
pass | pass |
TestScan/DataErrReader |
pass | pass |
TestScan/OneByteReader |
pass | pass |
TestScan/ReaderOnly |
pass | pass |
TestScan/StringReader |
pass | pass |
TestScanEmpty |
pass | pass |
TestScanInts |
pass | pass |
TestScanMultiple |
pass | pass |
TestScanNewlinesAreSpaces |
pass | pass |
TestScanNotPointer |
pass | pass |
TestScanOverflow |
pass | pass |
TestScanStateCount |
pass | pass |
TestScanf |
pass | pass |
TestScanfMulti |
pass | pass |
TestScanfMulti/DataErrReader |
pass | pass |
TestScanfMulti/OneByteReader |
pass | pass |
TestScanfMulti/ReaderOnly |
pass | pass |
TestScanfMulti/StringReader |
pass | pass |
TestScanfNewlineMatchFormat |
pass | pass |
TestScanln |
pass | pass |
TestScanln/DataErrReader |
pass | pass |
TestScanln/OneByteReader |
pass | pass |
TestScanln/ReaderOnly |
pass | pass |
TestScanln/StringReader |
pass | pass |
TestScanlnNewlinesTerminate |
pass | pass |
TestScanlnNoNewline |
pass | pass |
TestScanlnWithMiddleNewline |
pass | pass |
TestSlicePrinter |
pass | pass |
TestSprintf |
pass | pass |
TestStringer |
pass | pass |
TestStructPrinter |
pass | pass |
TestUnreadRuneWithBufio |
pass | pass |
TestWidthAndPrecision |
pass | pass |
Excluded declarations
Declarations filtered from both sides of the comparison, and therefore not claimed above:
Benchmark, Fuzz and Example declarations the converted host does not execute, plus any
test requiring a capability the managed runtime does not provide — a testing member the host
has not implemented, or a platform behavior it provably cannot reproduce. Each is named with
the capability it needs.
- BenchmarkFprintInt (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkFprintIntNoAlloc (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkFprintfBytes (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkManyArgs (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkScanInts (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkScanRecursiveInt (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkScanRecursiveIntReaderWrapper (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfBoolean (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfBytes (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfComplex (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfEmpty (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfFloat (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfHexBytes (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfHexString (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfInt (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfIntInt (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfPadding (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfPrefixedInt (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfQuoteString (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfSlowParsingPath (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfString (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfStringer (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfStructure (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfTruncateBytes (benchmark): benchmark execution is deferred to Phase 4D
- BenchmarkSprintfTruncateString (benchmark): benchmark execution is deferred to Phase 4D
- ExampleErrorf (example): example execution is deferred to Phase 4D
- ExampleFprint (example): example execution is deferred to Phase 4D
- ExampleFprintf (example): example execution is deferred to Phase 4D
- ExampleFprintln (example): example execution is deferred to Phase 4D
- ExampleFscanf (example): example execution is deferred to Phase 4D
- ExampleFscanln (example): example execution is deferred to Phase 4D
- ExampleGoStringer (example): example execution is deferred to Phase 4D
- ExamplePrint (example): example execution is deferred to Phase 4D
- ExamplePrintf (example): example execution is deferred to Phase 4D
- ExamplePrintln (example): example execution is deferred to Phase 4D
- ExampleSprint (example): example execution is deferred to Phase 4D
- ExampleSprintf (example): example execution is deferred to Phase 4D
- ExampleSprintln (example): example execution is deferred to Phase 4D
- ExampleSscanf (example): example execution is deferred to Phase 4D
- ExampleStringer (example): example execution is deferred to Phase 4D
- Example_formats (example): example execution is deferred to Phase 4D
- Example_printers (example): example execution is deferred to Phase 4D