Add good bit of functionality, some tests

Signed-off-by: Vartan Benohanian <vartanbeno@gmail.com>

vote_test.go

@@ -0,0 +1,87 @@
+package geddit
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"reflect"
+	"testing"
+)
+
+func TestVoteServiceOp_Up(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/api/vote", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, http.MethodPost)
+
+		form := url.Values{}
+		form.Set("id", "t3_test")
+		form.Set("dir", fmt.Sprint(upvote))
+		form.Set("rank", "10")
+
+		_ = r.ParseForm()
+		if expect, actual := form, r.PostForm; !reflect.DeepEqual(expect, actual) {
+			t.Fatalf("got unexpected value\nexpect: %s\nactual: %s", Stringify(expect), Stringify(actual))
+		}
+
+		fmt.Fprint(w, `{}`)
+	})
+
+	_, err := client.Vote.Up(ctx, "t3_test")
+	if err != nil {
+		t.Fatalf("got unexpected error: %v", err)
+	}
+}
+
+func TestVoteServiceOp_Down(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/api/vote", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, http.MethodPost)
+
+		form := url.Values{}
+		form.Set("id", "t3_test")
+		form.Set("dir", fmt.Sprint(downvote))
+		form.Set("rank", "10")
+
+		_ = r.ParseForm()
+		if expect, actual := form, r.PostForm; !reflect.DeepEqual(expect, actual) {
+			t.Fatalf("got unexpected value\nexpect: %s\nactual: %s", Stringify(expect), Stringify(actual))
+		}
+
+		fmt.Fprint(w, `{}`)
+	})
+
+	_, err := client.Vote.Down(ctx, "t3_test")
+	if err != nil {
+		t.Fatalf("got unexpected error: %v", err)
+	}
+}
+
+func TestVoteServiceOp_Remove(t *testing.T) {
+	setup()
+	defer teardown()
+
+	mux.HandleFunc("/api/vote", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, http.MethodPost)
+
+		form := url.Values{}
+		form.Set("id", "t3_test")
+		form.Set("dir", fmt.Sprint(novote))
+		form.Set("rank", "10")
+
+		_ = r.ParseForm()
+		if expect, actual := form, r.PostForm; !reflect.DeepEqual(expect, actual) {
+			t.Fatalf("got unexpected value\nexpect: %s\nactual: %s", Stringify(expect), Stringify(actual))
+		}
+
+		fmt.Fprint(w, `{}`)
+	})
+
+	_, err := client.Vote.Remove(ctx, "t3_test")
+	if err != nil {
+		t.Fatalf("got unexpected error: %v", err)
+	}
+}