diff --git a/.github/CONTRIBUTING.md b/.github/CONTRIBUTING.md index e55f6f6..ba8f91e 100644 --- a/.github/CONTRIBUTING.md +++ b/.github/CONTRIBUTING.md @@ -20,6 +20,12 @@ Please make sure you've added all necessary tests. make test ``` +### Run Linter + +```shell +make lint +``` + ## Development inside container Docker container contains all necessary tools for development. Just run bash in the dev container. diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml index 6b86320..8787ed4 100644 --- a/.github/workflows/ci.yml +++ b/.github/workflows/ci.yml @@ -31,6 +31,17 @@ jobs: uses: mxschmitt/action-tmate@v3 - run: make test + lint: + runs-on: ubuntu-latest + steps: + - uses: actions/checkout@v3 + - uses: actions/setup-go@v3 + with: + go-version: "1.19.0" # update together with Dockerfile.dev + - uses: golangci/golangci-lint-action@v3 + with: + version: "v1.49.0" # update together with Dockerfile.dev + check-tidy: name: go mod tidy runs-on: ubuntu-latest diff --git a/.golangci.yml b/.golangci.yml new file mode 100644 index 0000000..7984706 --- /dev/null +++ b/.golangci.yml @@ -0,0 +1,274 @@ +# Based on golden config https://gist.github.com/maratori/47a4d00457a92aa426dbd48a18776322 + +run: + # Timeout for analysis, e.g. 30s, 5m. + # Default: 1m + timeout: 3m + + +# This file contains only configs which differ from defaults. +# All possible options can be found here https://github.com/golangci/golangci-lint/blob/master/.golangci.reference.yml +linters-settings: + cyclop: + # The maximal code complexity to report. + # Default: 10 + max-complexity: 30 + # The maximal average package complexity. + # If it's higher than 0.0 (float) the check is enabled + # Default: 0.0 + package-average: 10.0 + + errcheck: + # Report about not checking of errors in type assertions: `a := b.(MyStruct)`. + # Such cases aren't reported by default. + # Default: false + check-type-assertions: true + + funlen: + # Checks the number of lines in a function. + # If lower than 0, disable the check. + # Default: 60 + lines: 100 + # Checks the number of statements in a function. + # If lower than 0, disable the check. + # Default: 40 + statements: 50 + + gocognit: + # Minimal code complexity to report + # Default: 30 (but we recommend 10-20) + min-complexity: 20 + + gocritic: + # Settings passed to gocritic. + # The settings key is the name of a supported gocritic checker. + # The list of supported checkers can be find in https://go-critic.github.io/overview. + settings: + captLocal: + # Whether to restrict checker to params only. + # Default: true + paramsOnly: false + underef: + # Whether to skip (*x).method() calls where x is a pointer receiver. + # Default: true + skipRecvDeref: false + + gomnd: + # List of function patterns to exclude from analysis. + # Values always ignored: `time.Date` + # Default: [] + ignored-functions: + - os.Chmod + - os.Mkdir + - os.MkdirAll + - os.OpenFile + - os.WriteFile + - prometheus.ExponentialBuckets + - prometheus.ExponentialBucketsRange + - prometheus.LinearBuckets + - strconv.FormatFloat + - strconv.FormatInt + - strconv.FormatUint + - strconv.ParseFloat + - strconv.ParseInt + - strconv.ParseUint + + gomodguard: + blocked: + # List of blocked modules. + # Default: [] + modules: + - github.com/golang/protobuf: + recommendations: + - google.golang.org/protobuf + reason: "see https://developers.google.com/protocol-buffers/docs/reference/go/faq#modules" + - github.com/satori/go.uuid: + recommendations: + - github.com/google/uuid + reason: "satori's package is not maintained" + - github.com/gofrs/uuid: + recommendations: + - github.com/google/uuid + reason: "see recommendation from dev-infra team: https://confluence.gtforge.com/x/gQI6Aw" + + govet: + # Enable all analyzers. + # Default: false + enable-all: true + # Disable analyzers by name. + # Run `go tool vet help` to see all analyzers. + # Default: [] + disable: + - fieldalignment # too strict + # Settings per analyzer. + settings: + shadow: + # Whether to be strict about shadowing; can be noisy. + # Default: false + strict: true + + nakedret: + # Make an issue if func has more lines of code than this setting, and it has naked returns. + # Default: 30 + max-func-lines: 0 + + nolintlint: + # Exclude following linters from requiring an explanation. + # Default: [] + allow-no-explanation: [ funlen, gocognit, lll ] + # Enable to require an explanation of nonzero length after each nolint directive. + # Default: false + require-explanation: true + # Enable to require nolint directives to mention the specific linter being suppressed. + # Default: false + require-specific: true + + rowserrcheck: + # database/sql is always checked + # Default: [] + packages: + - github.com/jmoiron/sqlx + + tenv: + # The option `all` will run against whole test files (`_test.go`) regardless of method/function signatures. + # Otherwise, only methods that take `*testing.T`, `*testing.B`, and `testing.TB` as arguments are checked. + # Default: false + all: true + + +linters: + disable-all: true + enable: + ## enabled by default + - errcheck # checking for unchecked errors, these unchecked errors can be critical bugs in some cases + - gosimple # specializes in simplifying a code + - govet # reports suspicious constructs, such as Printf calls whose arguments do not align with the format string + - ineffassign # detects when assignments to existing variables are not used + - staticcheck # is a go vet on steroids, applying a ton of static analysis checks + - typecheck # like the front-end of a Go compiler, parses and type-checks Go code + - unused # checks for unused constants, variables, functions and types + ## disabled by default + - asasalint # checks for pass []any as any in variadic func(...any) + - asciicheck # checks that your code does not contain non-ASCII identifiers + - bidichk # checks for dangerous unicode character sequences + - bodyclose # checks whether HTTP response body is closed successfully + #- contextcheck # checks the function whether use a non-inherited context # TODO: enable after golangci-lint uses https://github.com/sylvia7788/contextcheck/releases/tag/v1.0.7 + - cyclop # checks function and package cyclomatic complexity + - dupl # tool for code clone detection + - durationcheck # checks for two durations multiplied together + - errname # checks that sentinel errors are prefixed with the Err and error types are suffixed with the Error + - errorlint # finds code that will cause problems with the error wrapping scheme introduced in Go 1.13 + - execinquery # checks query string in Query function which reads your Go src files and warning it finds + - exhaustive # checks exhaustiveness of enum switch statements + - exportloopref # checks for pointers to enclosing loop variables + - forbidigo # forbids identifiers + - funlen # tool for detection of long functions + - gochecknoglobals # checks that no global variables exist + - gochecknoinits # checks that no init functions are present in Go code + - gocognit # computes and checks the cognitive complexity of functions + - goconst # finds repeated strings that could be replaced by a constant + - gocritic # provides diagnostics that check for bugs, performance and style issues + - gocyclo # computes and checks the cyclomatic complexity of functions + - godot # checks if comments end in a period + - goimports # in addition to fixing imports, goimports also formats your code in the same style as gofmt + - gomnd # detects magic numbers + - gomoddirectives # manages the use of 'replace', 'retract', and 'excludes' directives in go.mod + - gomodguard # allow and block lists linter for direct Go module dependencies. This is different from depguard where there are different block types for example version constraints and module recommendations + - goprintffuncname # checks that printf-like functions are named with f at the end + - gosec # inspects source code for security problems + - lll # reports long lines + - makezero # finds slice declarations with non-zero initial length + - nakedret # finds naked returns in functions greater than a specified function length + - nestif # reports deeply nested if statements + - nilerr # finds the code that returns nil even if it checks that the error is not nil + - nilnil # checks that there is no simultaneous return of nil error and an invalid value + - noctx # finds sending http request without context.Context + - nolintlint # reports ill-formed or insufficient nolint directives + - nonamedreturns # reports all named returns + - nosprintfhostport # checks for misuse of Sprintf to construct a host with port in a URL + - predeclared # finds code that shadows one of Go's predeclared identifiers + - promlinter # checks Prometheus metrics naming via promlint + - reassign # checks that package variables are not reassigned + - revive # fast, configurable, extensible, flexible, and beautiful linter for Go, drop-in replacement of golint + - rowserrcheck # checks whether Err of rows is checked successfully + - sqlclosecheck # checks that sql.Rows and sql.Stmt are closed + - stylecheck # is a replacement for golint + - tenv # detects using os.Setenv instead of t.Setenv since Go1.17 + - testpackage # makes you use a separate _test package + - tparallel # detects inappropriate usage of t.Parallel() method in your Go test codes + - unconvert # removes unnecessary type conversions + - unparam # reports unused function parameters + - usestdlibvars # detects the possibility to use variables/constants from the Go standard library + - wastedassign # finds wasted assignment statements + - whitespace # detects leading and trailing whitespace + + ## you may want to enable + #- decorder # checks declaration order and count of types, constants, variables and functions + #- exhaustruct # checks if all structure fields are initialized + #- gci # controls golang package import order and makes it always deterministic + #- godox # detects FIXME, TODO and other comment keywords + #- goheader # checks is file header matches to pattern + #- interfacebloat # checks the number of methods inside an interface + #- ireturn # accept interfaces, return concrete types + #- prealloc # [premature optimization, but can be used in some cases] finds slice declarations that could potentially be preallocated + #- varnamelen # [great idea, but too many false positives] checks that the length of a variable's name matches its scope + #- wrapcheck # checks that errors returned from external packages are wrapped + + ## disabled + #- containedctx # detects struct contained context.Context field + #- depguard # [replaced by gomodguard] checks if package imports are in a list of acceptable packages + #- dogsled # checks assignments with too many blank identifiers (e.g. x, _, _, _, := f()) + #- errchkjson # [don't see profit + I'm against of omitting errors like in the first example https://github.com/breml/errchkjson] checks types passed to the json encoding functions. Reports unsupported types and optionally reports occasions, where the check for the returned error can be omitted + #- forcetypeassert # [replaced by errcheck] finds forced type assertions + #- goerr113 # [too strict] checks the errors handling expressions + #- gofmt # [replaced by goimports] checks whether code was gofmt-ed + #- gofumpt # [replaced by goimports, gofumports is not available yet] checks whether code was gofumpt-ed + #- grouper # analyzes expression groups + #- importas # enforces consistent import aliases + #- logrlint # [owner archived repository] checks logr arguments + #- maintidx # measures the maintainability index of each function + #- misspell # [useless] finds commonly misspelled English words in comments + #- nlreturn # [too strict and mostly code is not more readable] checks for a new line before return and branch statements to increase code clarity + #- paralleltest # [too many false positives] detects missing usage of t.Parallel() method in your Go test + #- tagliatelle # checks the struct tags + #- thelper # detects golang test helpers without t.Helper() call and checks the consistency of test helpers + #- wsl # [too strict and mostly code is not more readable] whitespace linter forces you to use empty lines + + ## deprecated + #- deadcode # [deprecated, replaced by unused] finds unused code + #- exhaustivestruct # [deprecated, replaced by exhaustruct] checks if all struct's fields are initialized + #- golint # [deprecated, replaced by revive] golint differs from gofmt. Gofmt reformats Go source code, whereas golint prints out style mistakes + #- ifshort # [deprecated] checks that your code uses short syntax for if-statements whenever possible + #- interfacer # [deprecated] suggests narrower interface types + #- maligned # [deprecated, replaced by govet fieldalignment] detects Go structs that would take less memory if their fields were sorted + #- nosnakecase # [deprecated, replaced by revive var-naming] detects snake case of variable naming and function name + #- scopelint # [deprecated, replaced by exportloopref] checks for unpinned variables in go programs + #- structcheck # [deprecated, replaced by unused] finds unused struct fields + #- varcheck # [deprecated, replaced by unused] finds unused global variables and constants + + +issues: + # Maximum count of issues with the same text. + # Set to 0 to disable. + # Default: 3 + max-same-issues: 50 + + exclude-rules: + # from golden config + - source: "^//\\s*go:generate\\s" + linters: [ lll ] + - source: "(noinspection|TODO)" + linters: [ godot ] + - source: "//noinspection" + linters: [ gocritic ] + - source: "^\\s+if _, ok := err\\.\\([^.]+\\.InternalError\\); ok {" + linters: [ errorlint ] + - path: "_test\\.go" + linters: + - bodyclose + - dupl + - funlen + - goconst + - gosec + - noctx + - wrapcheck diff --git a/Dockerfile.dev b/Dockerfile.dev index d5e1c34..a979e67 100644 --- a/Dockerfile.dev +++ b/Dockerfile.dev @@ -1,6 +1,9 @@ # update together with .github/workflows/ci.yml FROM golang:1.19.0 AS go +# update together with .github/workflows/ci.yml +FROM golangci/golangci-lint:v1.49.0 AS linter + FROM go AS dev ENV INSIDE_DEV_CONTAINER 1 WORKDIR /app diff --git a/Makefile b/Makefile index d703030..7fb2e1a 100644 --- a/Makefile +++ b/Makefile @@ -16,6 +16,11 @@ test-cover: ## run all tests with code coverage go test -race -p 8 -parallel 8 -timeout 1m -coverpkg ./... -coverprofile coverage.out ./... .PHONY: test-cover +lint: build-docker-dev ## run linter + @echo "+ $@" + $(RUN_IN_DOCKER) golangci-lint run +.PHONY: lint + bash: build-docker-dev ## run bash inside container for development ifndef INSIDE_DEV_CONTAINER @echo "+ $@" diff --git a/main.go b/main.go index 0f4310a..c8c0335 100644 --- a/main.go +++ b/main.go @@ -7,5 +7,5 @@ import ( ) func main() { - singlechecker.Main(testpackage.NewAnalyzer()) + singlechecker.Main(testableexamples.NewAnalyzer()) } diff --git a/pkg/testableexamples/testpackage.go b/pkg/testableexamples/testableexamples.go similarity index 93% rename from pkg/testableexamples/testpackage.go rename to pkg/testableexamples/testableexamples.go index 98c38b7..5578280 100644 --- a/pkg/testableexamples/testpackage.go +++ b/pkg/testableexamples/testableexamples.go @@ -1,4 +1,4 @@ -package testpackage +package testableexamples import ( "golang.org/x/tools/go/analysis"