[#135] Make all error status receivers pointers

Signed-off-by: Alejandro Lopez <a.lopez@yadro.com>

client/errors_test.go

@@ -10,59 +10,40 @@ import (
 )
 
 func TestErrors(t *testing.T) {
-	for _, tc := range []struct {
+	errs := []struct {
 		check func(error) bool
-		errs  []error
+		err   error
 	}{
 		{
 			check: client.IsErrContainerNotFound,
-			errs: []error{
-				apistatus.ContainerNotFound{},
-				new(apistatus.ContainerNotFound),
-			},
+			err:   new(apistatus.ContainerNotFound),
 		},
 		{
 			check: client.IsErrEACLNotFound,
-			errs: []error{
-				apistatus.EACLNotFound{},
-				new(apistatus.EACLNotFound),
-			},
+			err:   new(apistatus.EACLNotFound),
 		},
 		{
 			check: client.IsErrObjectNotFound,
-			errs: []error{
-				apistatus.ObjectNotFound{},
-				new(apistatus.ObjectNotFound),
-			},
+			err:   new(apistatus.ObjectNotFound),
 		},
 		{
 			check: client.IsErrObjectAlreadyRemoved,
-			errs: []error{
-				apistatus.ObjectAlreadyRemoved{},
-				new(apistatus.ObjectAlreadyRemoved),
-			},
+			err:   new(apistatus.ObjectAlreadyRemoved),
 		},
 		{
 			check: client.IsErrSessionExpired,
-			errs: []error{
-				apistatus.SessionTokenExpired{},
-				new(apistatus.SessionTokenExpired),
-			},
+			err:   new(apistatus.SessionTokenExpired),
 		}, {
 			check: client.IsErrSessionNotFound,
-			errs: []error{
-				apistatus.SessionTokenNotFound{},
-				new(apistatus.SessionTokenNotFound),
-			},
+			err:   new(apistatus.SessionTokenNotFound),
 		},
-	} {
-		require.NotEmpty(t, tc.errs)
+	}
 
-		for i := range tc.errs {
-			require.True(t, tc.check(tc.errs[i]), tc.errs[i])
-			require.True(t, tc.check(fmt.Errorf("top-level context: :%w",
-				fmt.Errorf("inner context: %w", tc.errs[i])),
-			), tc.errs[i])
+	for i := range errs {
+		for j := range errs {
+			nestedErr := fmt.Errorf("top-level context: :%w", fmt.Errorf("inner context: %w", errs[j].err))
+			require.Equal(t, i == j, errs[i].check(errs[j].err))
+			require.Equal(t, i == j, errs[i].check(nestedErr))
 		}
 	}
 }