walk: refactor test to table test

walk/walk_test.go

@@ -1,27 +1,35 @@
 package walk
 
 import (
+	"reflect"
 	"testing"
 )
 
 func TestWalk(t *testing.T) {
-	t.Run("walk function test", func(t *testing.T) {
-		expected := "Chris"
-		var got []string
-
-		x := struct {
+	cases := []struct {
 		Name          string
-		}{expected}
+		Input         interface{}
+		ExpectedCalls []string
+	}{
+		{
+			"struct with one string field",
+			struct {
+				Name string
+			}{"Chris"},
+			[]string{"Chris"},
+		},
+	}
 
-		Walk(x, func(input string) {
+	for _, test := range cases {
+		t.Run(test.Name, func(t *testing.T) {
+			var got []string
+			Walk(test.Input, func(input string) {
 				got = append(got, input)
 			})
 
-		if len(got) != 1 {
-			t.Errorf("wrong number of function calls, got %d want %d", len(got), 1)
-		}
-		if got[0] != expected {
-			t.Errorf("got %q want %q", got[0], expected)
+			if !reflect.DeepEqual(got, test.ExpectedCalls) {
+				t.Errorf("got %v want %v", got, test.ExpectedCalls)
 			}
 		})
 	}
+}