Updating tests to pass `go vet`

Mostly lack of struct field names in literals and one sprintf format
specifier mismatch.

app_test.go

@@ -43,7 +43,7 @@ func ExampleAppSubcommand() {
 					Usage:       "sends a greeting in english",
 					Description: "greets someone in english",
 					Flags: []cli.Flag{
-						cli.StringFlag{"name", "Bob", "Name of the person to greet"},
+						cli.StringFlag{Name: "name", Value: "Bob", Usage: "Name of the person to greet"},
 					},
 					Action: func(c *cli.Context) {
 						fmt.Println("Hello,", c.String("name"))
@@ -255,11 +255,11 @@ func TestApp_ParseSliceFlags(t *testing.T) {
 	var expectedStringSlice = []string{"8.8.8.8", "8.8.4.4"}
 
 	if !IntsEquals(parsedIntSlice, expectedIntSlice) {
-		t.Errorf("%s does not match %s", parsedIntSlice, expectedIntSlice)
+		t.Errorf("%v does not match %v", parsedIntSlice, expectedIntSlice)
 	}
 
 	if !StrsEquals(parsedStringSlice, expectedStringSlice) {
-		t.Errorf("%s does not match %s", parsedStringSlice, expectedStringSlice)
+		t.Errorf("%v does not match %v", parsedStringSlice, expectedStringSlice)
 	}
 }
 

cli_test.go

@@ -1,8 +1,9 @@
 package cli_test
 
 import (
-	"github.com/codegangsta/cli"
 	"os"
+
+	"github.com/codegangsta/cli"
 )
 
 func Example() {
@@ -47,7 +48,7 @@ func ExampleSubcommand() {
 					Usage:       "sends a greeting in english",
 					Description: "greets someone in english",
 					Flags: []cli.Flag{
-						cli.StringFlag{"name", "Bob", "Name of the person to greet"},
+						cli.StringFlag{Name: "name", Value: "Bob", Usage: "Name of the person to greet"},
 					},
 					Action: func(c *cli.Context) {
 						println("Hello, ", c.String("name"))
@@ -57,7 +58,7 @@ func ExampleSubcommand() {
 					ShortName: "sp",
 					Usage:     "sends a greeting in spanish",
 					Flags: []cli.Flag{
-						cli.StringFlag{"surname", "Jones", "Surname of the person to greet"},
+						cli.StringFlag{Name: "surname", Value: "Jones", Usage: "Surname of the person to greet"},
 					},
 					Action: func(c *cli.Context) {
 						println("Hola, ", c.String("surname"))
@@ -67,7 +68,7 @@ func ExampleSubcommand() {
 					ShortName: "fr",
 					Usage:     "sends a greeting in french",
 					Flags: []cli.Flag{
-						cli.StringFlag{"nickname", "Stevie", "Nickname of the person to greet"},
+						cli.StringFlag{Name: "nickname", Value: "Stevie", Usage: "Nickname of the person to greet"},
 					},
 					Action: func(c *cli.Context) {
 						println("Bonjour, ", c.String("nickname"))