Run linter on submit

tools/testtool/commands/test_submission.go

@@ -121,8 +121,13 @@ func testSubmission(studentRepo, privateRepo, problem string) error {
 	copyDir(privateRepo, path.Join(problem, testdataDir), tmpRepo)
 
 	// Copy go.mod and go.sum from private repo to temp dir.
-	log.Printf("copying go.mod and go.sum")
+	log.Printf("copying go.mod, go.sum and .golangci.yml")
-	copyFiles(privateRepo, []string{"go.mod", "go.sum"}, tmpRepo)
+	copyFiles(privateRepo, []string{"go.mod", "go.sum", ".golangci.yml"}, tmpRepo)
+
+	log.Printf("running linter")
+	if err := runLinter(tmpRepo, problem); err != nil {
+		return err
+	}
 
 	// Run tests.
 	log.Printf("running tests")
@@ -185,6 +190,19 @@ func (e *TestFailedError) Unwrap() error {
 	return e.E
 }
 
+func runLinter(testDir, problem string) error {
+	cmd := exec.Command("golangci-lint", "run", "--modules-download-mode", "readonly", "--build-tags", "private", fmt.Sprintf("./%s/...", problem))
+	cmd.Dir = testDir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("linter failed: %w", err)
+	}
+
+	return nil
+}
+
 // runTests runs all tests in directory with race detector.
 func runTests(testDir, problem string) error {
 	binCache, err := ioutil.TempDir("/tmp", "bincache")

tools/testtool/testdata/submissions/correct/sum/private/.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

tools/testtool/testdata/submissions/incorrect/brokenstyle/description.md

@@ -0,0 +1 @@
+Student solution compiles but does not pass tests.

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/.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

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/brokenstyle/sum.go

@@ -0,0 +1,7 @@
+// +build !solution
+
+package brokenstyle
+
+func Sum(a, b int64) int64 {
+	return 0
+}

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/brokenstyle/sum_private_test.go

@@ -0,0 +1,45 @@
+// +build private
+
+package brokenstyle
+
+import (
+	"encoding/csv"
+	"os"
+	"strconv"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+)
+
+// Read tests from csv file.
+func readTestCases(filename string) ([]*testCase, error) {
+	f, err := os.Open(filename)
+	if err != nil {
+		return nil, err
+	}
+
+	records, err := csv.NewReader(f).ReadAll()
+	if err != nil {
+		return nil, err
+	}
+
+	var tests []*testCase
+	for _, r := range records {
+		a, _ := strconv.ParseInt(r[0], 10, 64)
+		b, _ := strconv.ParseInt(r[1], 10, 64)
+		sum, _ := strconv.ParseInt(r[2], 10, 64)
+		tests = append(tests, &testCase{a: a, b: b, sum: sum})
+	}
+
+	return tests, nil
+}
+
+func TestSumPrivate(t *testing.T) {
+	tests, err := readTestCases("./testdata/tests.csv")
+	require.Nil(t, err)
+
+	for _, tc := range tests {
+		s := Sum(tc.a, tc.b)
+		require.Equal(t, tc.sum, s, "%d + %d == %d != %d", tc.a, tc.b, s, tc.sum)
+	}
+}

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/brokenstyle/sum_solution.go

@@ -0,0 +1,7 @@
+// +build solution
+
+package brokenstyle
+
+func Sum(a, b int64) int64 {
+	return a + b
+}

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/brokenstyle/sum_test.go

@@ -0,0 +1,22 @@
+package brokenstyle
+
+import (
+	"math"
+	"testing"
+)
+
+type testCase struct {
+	a, b, sum int64
+}
+
+func TestSum(t *testing.T) {
+	for _, input := range []testCase{
+		{a: 2, b: 2, sum: 4},
+		{a: 2, b: -2, sum: 0},
+		{a: math.MaxInt64, b: 1, sum: math.MinInt64},
+	} {
+		if out := Sum(input.a, input.b); out != input.sum {
+			t.Errorf("%d + %d == %d != %d", input.a, input.b, out, input.sum)
+		}
+	}
+}

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/brokenstyle/testdata/tests.csv

@@ -0,0 +1,3 @@
+a,b,sum
+0,0,0
+1,-1,0

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/go.mod

@@ -0,0 +1,9 @@
+module gitlab.com/slon/shad-go
+
+go 1.13
+
+require (
+	github.com/spf13/cobra v0.0.5
+	github.com/stretchr/testify v1.4.0
+	golang.org/x/tools v0.0.0-20200125223703-d33eef8e6825
+)

tools/testtool/testdata/submissions/incorrect/brokenstyle/private/go.sum

@@ -0,0 +1,53 @@
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
+github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
+github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/hashicorp/hcl v1.0.0/go.mod h1:E5yfLk+7swimpb2L/Alb/PJmXilQ/rhwaUYs4T20WEQ=
+github.com/inconshreveable/mousetrap v1.0.0 h1:Z8tu5sraLXCXIcARxBp/8cbvlwVa7Z1NHg9XEKhtSvM=
+github.com/inconshreveable/mousetrap v1.0.0/go.mod h1:PxqpIevigyE2G7u3NXJIT2ANytuPF1OarO4DADm73n8=
+github.com/magiconair/properties v1.8.0/go.mod h1:PppfXfuXeibc/6YijjN8zIbojt8czPbwD3XqdrwzmxQ=
+github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
+github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
+github.com/pelletier/go-toml v1.2.0/go.mod h1:5z9KED0ma1S8pY6P1sdut58dfprrGBbd/94hg7ilaic=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR/rfWxYHBV53g=
+github.com/spf13/afero v1.1.2/go.mod h1:j4pytiNVoe2o6bmDsKpLACNPDBIoEAkihy7loJ1B0CQ=
+github.com/spf13/cast v1.3.0/go.mod h1:Qx5cxh0v+4UWYiBimWS+eyWzqEqokIECu5etghLkUJE=
+github.com/spf13/cobra v0.0.5 h1:f0B+LkLX6DtmRH1isoNA9VTtNUK9K8xYd28JNNfOv/s=
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+github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
+github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
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+golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
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tools/testtool/testdata/submissions/incorrect/brokenstyle/student/brokenstyle/sum.go

@@ -0,0 +1,8 @@
+// +build !solution
+
+package brokenstyle
+
+func Sum(a, b int64) int64 {
+	a_plus_b := a + b
+	return a_plus_b
+}

tools/testtool/testdata/submissions/incorrect/brokenstyle/student/brokenstyle/sum_test.go

@@ -0,0 +1,23 @@
+package brokenstyle
+
+import (
+	"math"
+	"testing"
+)
+
+type testCase struct {
+	a, b, sum int64
+}
+
+func TestSum(t *testing.T) {
+	for _, input := range []testCase{
+		{a: 2, b: 2, sum: 4},
+		{a: 2, b: -2, sum: 0},
+		{a: math.MaxInt64, b: 1, sum: math.MinInt64},
+		{a: -1, b: -1, sum: -2},
+	} {
+		if out := Sum(input.a, input.b); out != input.sum {
+			t.Errorf("%d + %d == %d != %d", input.a, input.b, out, input.sum)
+		}
+	}
+}

tools/testtool/testdata/submissions/incorrect/brokenstyle/student/brokenstyle/testdata/tests.csv

@@ -0,0 +1,3 @@
+a,b,sum
+0,0,0
+1,-1,0

tools/testtool/testdata/submissions/incorrect/brokenstyle/student/go.mod

@@ -0,0 +1,9 @@
+module gitlab.com/slon/shad-go
+
+go 1.13
+
+require (
+	github.com/spf13/cobra v0.0.5
+	github.com/stretchr/testify v1.4.0
+	golang.org/x/tools v0.0.0-20200125223703-d33eef8e6825
+)

tools/testtool/testdata/submissions/incorrect/brokenstyle/student/go.sum

@@ -0,0 +1,53 @@
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
+github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE=
+github.com/coreos/go-etcd v2.0.0+incompatible/go.mod h1:Jez6KQU2B/sWsbdaef3ED8NzMklzPG4d5KIOhIy30Tk=
+github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
+github.com/cpuguy83/go-md2man v1.0.10/go.mod h1:SmD6nW6nTyfqj6ABTjUi3V3JVMnlJmwcJI5acqYI6dE=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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tools/testtool/testdata/submissions/incorrect/brokentest/private/.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

tools/testtool/testdata/submissions/incorrect/newdependency/private/.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