pkg/analysis/messagefmt: add tests

.gitignore

@@ -12,4 +12,4 @@
 *.out
 
 # Dependency directories (remove the comment below to include it)
-# vendor/
+vendor/

pkg/analysis/messagefmt/analyzer.go

@@ -36,8 +36,8 @@ var Analyzer = &analysis.Analyzer{
 
 func isException(word string) bool {
 	var exceptions = map[string]struct{}{
-		"xDS":  struct{}{},
-		"gRPC": struct{}{},
+		"xDS":  {},
+		"gRPC": {},
 	}
 
 	_, ok := exceptions[word]
@@ -66,7 +66,7 @@ func funcForCallExpr(pass *analysis.Pass, call *ast.CallExpr) (*types.Func, bool
 func isFromPkg(fun *types.Func, pkg string) bool {
 	// Calls to builtin types might not have a package.
 	if fun.Pkg() != nil {
-		return fun.Pkg().Path() == pkg
+		return strings.Contains(fun.Pkg().Path(), pkg)
 	}
 
 	return false
@@ -128,7 +128,7 @@ func checkInitialLower(pass *analysis.Pass, lit *ast.BasicLit) {
 
 	// If the first word is all uppercase, it's an
 	// initialism, so don't flag it.
-	if first == strings.ToUpper(first) {
+	if first == strings.ToUpper(first) && len(first) > 1 {
 		return
 	}
 

pkg/analysis/messagefmt/analyzer_test.go

@@ -0,0 +1,52 @@
+package messagefmt
+
+import (
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+
+	"golang.org/x/tools/go/analysis/analysistest"
+)
+
+func TestAnalyzer(t *testing.T) {
+	testdata := analysistest.TestData()
+
+	testCases := []struct {
+		desc string
+		pkg  string
+	}{
+		{
+			desc: "logrus",
+			pkg:  "a",
+		},
+		{
+			desc: "kingpin",
+			pkg:  "b",
+		},
+	}
+
+	for _, test := range testCases {
+		test := test
+		t.Run(test.desc, func(t *testing.T) {
+			t.Parallel()
+
+			dir := filepath.Join(testdata, "src", test.pkg)
+
+			if _, err := os.Stat(filepath.Join(dir, "go.mod")); err == nil {
+				cmd := exec.Command("go", "mod", "vendor")
+				cmd.Dir = dir
+
+				t.Cleanup(func() {
+					_ = os.RemoveAll(filepath.Join(testdata, "src", test.pkg, "vendor"))
+				})
+
+				if output, err := cmd.CombinedOutput(); err != nil {
+					t.Fatal(err, string(output))
+				}
+			}
+
+			analysistest.RunWithSuggestedFixes(t, testdata, Analyzer, test.pkg)
+		})
+	}
+}

pkg/analysis/messagefmt/testdata/src/a/go.mod

@@ -0,0 +1,5 @@
+module github.com/projectcontour/lint/pkg/analysis/messagefmt/testdata/src/a
+
+go 1.16
+
+require github.com/sirupsen/logrus v1.8.0

pkg/analysis/messagefmt/testdata/src/a/go.sum

@@ -0,0 +1,12 @@
+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/magefile/mage v1.10.0 h1:3HiXzCUY12kh9bIuyXShaVe529fJfyqoVM42o/uom2g=
+github.com/magefile/mage v1.10.0/go.mod h1:z5UZb/iS3GoOSn0JgWuiw7dxlurVYTu+/jHXqQg881A=
+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/sirupsen/logrus v1.8.0 h1:nfhvjKcUMhBMVqbKHJlk5RPrrfYr/NMo3692g0dwfWU=
+github.com/sirupsen/logrus v1.8.0/go.mod h1:4GuYW9TZmE769R5STWrRakJc4UqQ3+QQ95fyz7ENv1A=
+github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
+github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
+golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=

pkg/analysis/messagefmt/testdata/src/a/invalid.go

@@ -0,0 +1,18 @@
+package a
+
+import (
+	"github.com/sirupsen/logrus"
+)
+
+func invalid() {
+	logrus.Info("A walrus appears")    // want `message starts with uppercase: "A walrus appears"`
+	logrus.Debug("A walrus appears")   // want `message starts with uppercase: "A walrus appears"`
+	logrus.Error("A walrus appears")   // want `message starts with uppercase: "A walrus appears"`
+	logrus.Fatal("A walrus appears")   // want `message starts with uppercase: "A walrus appears"`
+	logrus.Panic("A walrus appears")   // want `message starts with uppercase: "A walrus appears"`
+	logrus.Print("A walrus appears")   // want `message starts with uppercase: "A walrus appears"`
+	logrus.Info("A walrus appears")    // want `message starts with uppercase: "A walrus appears"`
+	logrus.Trace("A walrus appears")   // want `message starts with uppercase: "A walrus appears"`
+	logrus.Warn("A walrus appears")    // want `message starts with uppercase: "A walrus appears"`
+	logrus.Warning("A walrus appears") // want `message starts with uppercase: "A walrus appears"`
+}

pkg/analysis/messagefmt/testdata/src/a/valid.go

@@ -0,0 +1,18 @@
+package a
+
+import (
+	"github.com/sirupsen/logrus"
+)
+
+func valid() {
+	logrus.Info("a walrus appears")
+	logrus.Debug("a walrus appears")
+	logrus.Error("a walrus appears")
+	logrus.Fatal("a walrus appears")
+	logrus.Panic("a walrus appears")
+	logrus.Print("a walrus appears")
+	logrus.Info("a walrus appears")
+	logrus.Trace("a walrus appears")
+	logrus.Warn("a walrus appears")
+	logrus.Warning("a walrus appears")
+}

pkg/analysis/messagefmt/testdata/src/b/go.mod

@@ -0,0 +1,9 @@
+module github.com/projectcontour/lint/pkg/analysis/messagefmt/testdata/src/b
+
+go 1.16
+
+require (
+	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
+	github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15 // indirect
+	gopkg.in/alecthomas/kingpin.v2 v2.2.6
+)

pkg/analysis/messagefmt/testdata/src/b/go.sum

@@ -0,0 +1,16 @@
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 h1:JYp7IbQjafoB+tBA3gMyHYHrpOtNuDiK/uB5uXxq5wM=
+github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15 h1:AUNCr9CiJuwrRYS3XieqF+Z9B9gNxo/eANAJCF2eiN4=
+github.com/alecthomas/units v0.0.0-20210208195552-ff826a37aa15/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
+github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+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/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
+github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6 h1:jMFz6MfLP0/4fUyZle81rXUoxOBFi19VUFKVDOQfozc=
+gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
+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=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=

pkg/analysis/messagefmt/testdata/src/b/invalid.go

@@ -0,0 +1,15 @@
+package b
+
+import (
+	"fmt"
+
+	"gopkg.in/alecthomas/kingpin.v2"
+)
+
+func invalid() {
+	verbose := kingpin.Flag("verbose", "verbose mode.").Short('v').Bool() // want `message starts with lowercase: "verbose mode."`
+
+	deleteCommand := kingpin.Command("delete", "delete an object.") // want `message starts with lowercase: "delete an object."`
+
+	fmt.Println(verbose, deleteCommand)
+}

pkg/analysis/messagefmt/testdata/src/b/valid.go

@@ -0,0 +1,15 @@
+package b
+
+import (
+	"fmt"
+
+	"gopkg.in/alecthomas/kingpin.v2"
+)
+
+func valid() {
+	verbose := kingpin.Flag("verbose", "Verbose mode.").Short('v').Bool()
+
+	deleteCommand := kingpin.Command("delete", "Delete an object.")
+
+	fmt.Println(verbose, deleteCommand)
+}