add test cases

pkg/cover/cover.go

@@ -155,7 +155,7 @@ func Execute(args, newGopath, target, mode, center string) {
 
 				//only focus package neither standard Go library nor dependency library
 				if depPkg, ok := pkgs[dep]; ok {
-					if findInternal(dep) {
+					if hasInternalPath(dep) {
 						//scan exist cache cover to tc.CacheCover
 						if cache, ok := seenCache[dep]; ok {
 							log.Printf("cache cover exist: %s", cache.Package.ImportPath)
@@ -296,10 +296,10 @@ func isDirExist(path string) bool {
 }
 
 // Refer: https://github.com/golang/go/blob/master/src/cmd/go/internal/load/pkg.go#L1334:6
-// findInternal looks for the final "internal" path element in the given import path.
-// If there isn't one, findInternal returns ok=false.
-// Otherwise, findInternal returns ok=true and the index of the "internal".
-func findInternal(path string) bool {
+// hasInternalPath looks for the final "internal" path element in the given import path.
+// If there isn't one, hasInternalPath returns ok=false.
+// Otherwise, hasInternalPath returns ok=true and the index of the "internal".
+func hasInternalPath(path string) bool {
 	// Three cases, depending on internal at start/end of string or not.
 	// The order matters: we must return the index of the final element,
 	// because the final one produces the most restrictive requirement

pkg/cover/cover_test.go

@@ -18,7 +18,6 @@ package cover
 
 import (
 	"fmt"
-	log "github.com/sirupsen/logrus"
 	"os"
 	"os/exec"
 	"path/filepath"
@@ -26,6 +25,8 @@ import (
 	"strings"
 	"testing"
 
+	log "github.com/sirupsen/logrus"
+
 	"github.com/stretchr/testify/assert"
 )
 
@@ -225,3 +226,81 @@ func TestDeclareCoverVars(t *testing.T) {
 	}
 
 }
+
+func TestGetInternalParent(t *testing.T) {
+	var tcs = []struct {
+		ImportPath     string
+		expectedParent string
+	}{
+		{
+			ImportPath:     "a/internal/b",
+			expectedParent: "a",
+		},
+		{
+			ImportPath:     "internal/b",
+			expectedParent: "",
+		},
+		{
+			ImportPath:     "a/b/internal/b",
+			expectedParent: "a/b",
+		},
+		{
+			ImportPath:     "a/b/internal",
+			expectedParent: "a/b",
+		},
+		{
+			ImportPath:     "a/b/internal/c",
+			expectedParent: "a/b",
+		},
+		{
+			ImportPath:     "a/b/c",
+			expectedParent: "",
+		},
+		{
+			ImportPath:     "",
+			expectedParent: "",
+		},
+	}
+
+	for _, tc := range tcs {
+		actual := getInternalParent(tc.ImportPath)
+		if actual != tc.expectedParent {
+			t.Errorf("getInternalParent failed for importPath %s, expected %s, got %s", tc.ImportPath, tc.expectedParent, actual)
+		}
+	}
+}
+
+func TestFindInternal(t *testing.T) {
+	var tcs = []struct {
+		ImportPath     string
+		expectedParent bool
+	}{
+		{
+			ImportPath:     "a/internal/b",
+			expectedParent: true,
+		},
+		{
+			ImportPath:     "internal/b",
+			expectedParent: true,
+		},
+		{
+			ImportPath:     "a/b/internal",
+			expectedParent: true,
+		},
+		{
+			ImportPath:     "a/b/c",
+			expectedParent: false,
+		},
+		{
+			ImportPath:     "internal",
+			expectedParent: true,
+		},
+	}
+
+	for _, tc := range tcs {
+		actual := hasInternalPath(tc.ImportPath)
+		if actual != tc.expectedParent {
+			t.Errorf("hasInternalPath check failed for importPath %s", tc.ImportPath)
+		}
+	}
+}

pkg/cover/store_test.go

@@ -44,7 +44,7 @@ func TestLocalStore(t *testing.T) {
 	localStore.Add(tc4)
 	addrs := localStore.Get(tc1.Name)
 	if len(addrs) != 2 {
-		t.Error("unexpect result")
+		t.Error("unexpected result")
 	}
 
 	for _, addr := range addrs {