package hnblogs

import (
	"testing"
)

func TestFetchBlogs(t *testing.T) {
	blogs, err := FetchBlogs()
	if err != nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	if len(blogs) == 0 {
		t.Fatalf("Expected to fetch some blogs, got %d", len(blogs))
	}
}

func TestGetBlogs(t *testing.T) {
	blogs, err := GetBlogs()
	if err != nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	if len(blogs) == 0 {
		t.Fatalf("Expected to fetch some blogs, got %d", len(blogs))
	}
}

func TestRandomBlog(t *testing.T) {
	blog, err := RandomBlog()
	if err != nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	if blog.URL == "" {
		t.Fatalf("Expected a valid blog, got an empty URL")
	}
}

func TestRandomBlogs(t *testing.T) {
	n := 5
	randomBlogs, err := RandomBlogs(n)
	if err != nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	if len(randomBlogs) != n {
		t.Fatalf("Expected %d random blogs, got %d", n, len(randomBlogs))
	}

	for _, blog := range randomBlogs {
		if blog.URL == "" {
			t.Fatalf("Expected a valid blog, got an empty URL")
		}
	}
}

func TestNthBlog(t *testing.T) {
	blogs, err := GetBlogs()
	if err != nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	blog, err := NthBlog(5)
	if err != nil {
		t.Fatalf("Expected no error, got %v", err)
	}

	if blog.URL != blogs[5].URL {
		t.Fatalf("Expected %s, got %s", blogs[5].URL, blog.URL)
	}

	_, err = NthBlog(len(blogs))
	if err == nil {
		t.Fatalf("Expected error for out-of-range index, got none")
	}
}