Add golangci-lint config

.golangci.yml

@@ -0,0 +1,77 @@
+# options for analysis running
+run:
+  # default concurrency is a available CPU number
+  concurrency: 8
+
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  deadline: 5m
+
+  # exit code when at least one issue was found, default is 1
+  issues-exit-code: 1
+
+  # include test files or not, default is true
+  tests: true
+
+
+# output configuration options
+output:
+  # colored-line-number|line-number|json|tab|checkstyle, default is "colored-line-number"
+  format: colored-line-number
+
+  # print lines of code with issue, default is true
+  print-issued-lines: true
+
+  # print linter name in the end of issue text, default is true
+  print-linter-name: true
+
+
+# all available settings of specific linters
+linters-settings:
+  govet:
+    # report about shadowed variables
+    check-shadowing: true
+  golint:
+    # minimal confidence for issues, default is 0.8
+    min-confidence: 0.8
+  gofmt:
+    # simplify code: gofmt with `-s` option, true by default
+    simplify: true
+  goimports:
+    # put imports beginning with prefix after 3rd-party packages;
+    # it's a comma-separated list of prefixes
+    local-prefixes: gitlab.com
+
+linters:
+  disable-all: true
+  enable:
+    - errcheck
+    - gofmt
+    - golint
+    - gosimple
+    - govet
+    - ineffassign
+    - scopelint
+    - staticcheck
+    - typecheck
+    - unconvert
+
+
+issues:
+  # List of regexps of issue texts to exclude, empty list by default.
+  # But independently from this option we use default exclude patterns,
+  # it can be disabled by `exclude-use-default: false`. To list all
+  # excluded by default patterns execute `golangci-lint run --help`
+  exclude:
+    - Using the variable on range scope .* in function literal
+
+  # Independently from option `exclude` we use default exclude patterns,
+  # it can be disabled by this option. To list all
+  # excluded by default patterns execute `golangci-lint run --help`.
+  # Default value for this option is true.
+  exclude-use-default: true
+
+  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
+  max-per-linter: 0
+
+  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
+  max-same-issues: 0

build.docker

@@ -3,3 +3,5 @@ FROM golang:1.13
 RUN apt-get update && apt-get install -y \
     rsync \
  && rm -rf /var/lib/apt/lists/*
+
+RUN curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh | sh -s -- -b $(go env GOPATH)/bin v1.23.6

tools/testtool/commands/test_submission_test.go

@@ -32,12 +32,12 @@ func Test_testSubmission_correct(t *testing.T) {
 	require.Nil(t, err)
 
 	for _, dir := range testDirs {
-		dir, err := filepath.Abs(dir)
+		absDir, err := filepath.Abs(dir)
 		require.Nil(t, err)
-		problem := path.Base(dir)
+		problem := path.Base(absDir)
 		t.Run(problem, func(t *testing.T) {
-			studentRepo := path.Join(dir, "student")
-			privateRepo := path.Join(dir, "private")
+			studentRepo := path.Join(absDir, "student")
+			privateRepo := path.Join(absDir, "private")
 
 			require.NoError(t, testSubmission(studentRepo, privateRepo, problem))
 		})
@@ -49,13 +49,13 @@ func Test_testSubmission_incorrect(t *testing.T) {
 	require.Nil(t, err)
 
 	for _, dir := range testDirs {
-		dir, err := filepath.Abs(dir)
+		absDir, err := filepath.Abs(dir)
 		require.Nil(t, err)
 
-		problem := path.Base(dir)
+		problem := path.Base(absDir)
 		t.Run(problem, func(t *testing.T) {
-			studentRepo := path.Join(dir, "student")
-			privateRepo := path.Join(dir, "private")
+			studentRepo := path.Join(absDir, "student")
+			privateRepo := path.Join(absDir, "private")
 
 			err := testSubmission(studentRepo, privateRepo, problem)
 			require.Error(t, err)