Fix: Go Test Not Working — Tests Not Running, Failing Unexpectedly, or Coverage Not Collected
How to fix Go testing issues — test function naming, table-driven tests, t.Run subtests, httptest, testify assertions, and common go test flag errors.
Tag: go
18 articles
RSSFix: Go Generics Type Constraint Error — Does Not Implement or Cannot Use as Type
How to fix Go generics errors — type constraints, interface vs constraint, comparable, union types, type inference failures, and common generic function pitfalls.
Fix: Go Deadlock — all goroutines are asleep, deadlock!
How to fix Go channel deadlocks — unbuffered vs buffered channels, missing goroutines, select statements, closing channels, sync primitives, and detecting deadlocks with go race detector.
Fix: Go Error Handling Not Working — errors.Is, errors.As, and Wrapping
How to fix Go error handling — errors.Is vs ==, errors.As for type extraction, fmt.Errorf %w for wrapping, sentinel errors, custom error types, and stack traces.
Fix: Go Panic Not Recovered — panic/recover Patterns and Common Pitfalls
How to handle Go panics correctly — recover() placement, goroutine panics, HTTP middleware recovery, defer ordering, distinguishing panics from errors, and when not to use recover.
Fix: Go Goroutine Leak — Goroutines That Never Exit
How to find and fix goroutine leaks in Go — detecting leaks with pprof and goleak, blocked channel patterns, context cancellation, and goroutine lifecycle management.
Fix: Go Interface Nil Panic — Non-Nil Interface Holding a Nil Pointer
How to fix the Go interface nil trap — understanding non-nil interfaces with nil pointers, detecting the issue, error interface patterns, and designing APIs to avoid the pitfall.
Fix: Go Concurrent Map Read and Write Panic — fatal error: concurrent map
How to fix Go's concurrent map read and write panic — using sync.RWMutex, sync.Map, atomic operations, and structuring code to avoid shared state.
Fix: Go context deadline exceeded / context canceled
How to fix Go context.DeadlineExceeded and context.Canceled errors — setting timeouts correctly, propagating context through call chains, handling cancellation, and debugging which operation timed out.
Fix: Go panic: runtime error: invalid memory address or nil pointer dereference
How to fix Go nil pointer dereference panics — checking for nil before use, nil interface traps, nil map writes, receiver methods on nil, and defensive nil handling patterns.
Fix: Go cannot find package / no required module provides package
How to fix 'cannot find package' and 'no required module provides package' errors in Go by syncing dependencies, fixing import paths, configuring private repos, and resolving workspace issues.
Fix: Go fatal error: all goroutines are asleep - deadlock!
How to fix Go fatal error all goroutines are asleep deadlock caused by unbuffered channels, missing goroutines, WaitGroup misuse, and channel direction errors.
Fix: Go panic: runtime error: index out of range
How to fix Go panic runtime error index out of range caused by empty slices, off-by-one errors, nil slices, concurrent access, and missing bounds checks.
Fix: Go cannot use X (type Y) as type Z in argument
How to fix Go 'cannot use as type' error caused by type mismatches, interface satisfaction, pointer vs value receivers, type conversions, and generic constraints.
Fix: Go undefined: variable (or function)
How to fix Go undefined error caused by undeclared variables, wrong package scope, unexported names, missing imports, build tags, and file organization issues.
Fix: Go Module Not Found – cannot find module providing package
How to fix the Go error 'cannot find module providing package' caused by missing go.mod, wrong module path, private repos, or GOPATH issues.
Fix: Go declared and not used / imported and not used (compile error)
How to fix 'declared and not used' and 'imported and not used' compile errors in Go. Covers blank identifiers, goimports, gopls, build tags, conditional compilation, and common edge cases.
Fix: no required module provides package / cannot find package in Go
How to fix 'no required module provides package', 'cannot find package', and 'module not found' errors in Go. Covers go mod init, go mod tidy, go get, GOPATH vs Go modules, GO111MODULE, GOPROXY, GOPRIVATE, replace directives, vendor directory, go.work workspaces, and major version suffixes.