library(testthat)
library(gluedown)
library(stringr)
library(rvest)
library(glue)

test_that("md_link can create a valid <href> tag (ex. 493)", {
  # https://github.github.com/gfm/#example-493
  lines <- md_link("link", "/url", "title")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_text(trim = TRUE) %>%
    expect_equal("link")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_attr("href") %>%
    expect_equal("/url")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_attr("title") %>%
    expect_equal("title")
})

test_that("md_link can create <href> tags with a named vector", {
  # no way to use title too
  lines <- md_link(link = "/url")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_text(trim = TRUE) %>%
    expect_equal("link")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_attr("href") %>%
    expect_equal("/url")
  # lines %>%
  #   md_convert() %>%
  #   read_html() %>%
  #   html_node("a") %>%
  #   html_attr("title") %>%
  #   expect_equal("title")
})

test_that("md_link can create <href> tags with a named vector", {
  lines <- md_link(link = "/url")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_text(trim = TRUE) %>%
    expect_equal("link")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_attr("href") %>%
    expect_equal("/url")
})

test_that("md_link can create a valid <href> without title (ex. 494)", {
  # https://github.github.com/gfm/#example-494
  lines <- md_link("link", "/url")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_text(trim = TRUE) %>%
    expect_equal("link")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_attr("href") %>%
    expect_equal("/url")
  lines %>%
    md_convert() %>%
    read_html() %>%
    html_node("a") %>%
    html_attr("title") %>%
    expect_missing()
})

test_that("md_reference can create an <href> tag (ex. 535)", {
  # https://github.github.com/gfm/#example-535
  lines <- md_reference("bar" = "/url \"title\"")
  md_paragraph("[foo][bar]", lines) %>%
    md_convert() %>%
    read_html() %>%
    html_node("p") %>%
    html_node("a") %>%
    html_text(trim = TRUE) %>%
    expect_equal("foo")
  md_paragraph("[foo][bar]", lines) %>%
    md_convert() %>%
    read_html() %>%
    html_node("p") %>%
    html_node("a") %>%
    html_attr("href") %>%
    expect_equal("/url")
  md_paragraph("[foo][bar]", lines) %>%
    md_convert() %>%
    read_html() %>%
    html_node("p") %>%
    html_node("a") %>%
    html_attr("title") %>%
    expect_equal("title")
})

test_that("md_label and md_reference can create an <href> tag (ex. 535)", {
  # https://github.github.com/gfm/#example-535
  md_paragraph(
    md_label(bar = "foo"),
    md_reference(bar = "/url")
  ) %>%
    md_convert() %>%
    read_html() %>%
    html_node("p") %>%
    html_node("a") %>%
    html_text(trim = TRUE) %>%
    expect_equal("foo")
  md_paragraph(
    md_label(bar = "foo"),
    md_reference(bar = "/url")
  ) %>%
    md_convert() %>%
    read_html() %>%
    html_node("p") %>%
    html_node("a") %>%
    html_attr("href") %>%
    expect_equal("/url")
})

test_that("md_label and md_reference can create an <href> tag (ex. 535)", {
  # https://github.github.com/gfm/#example-535
  md_paragraph(
    md_label("foo", "bar"),
    md_reference("bar", "/url")
  ) %>%
    md_convert() %>%
    read_html() %>%
    html_node("p") %>%
    html_node("a") %>%
    html_text(trim = TRUE) %>%
    expect_equal("foo")
  md_paragraph(
    md_label("foo", "bar"),
    md_reference("bar", "/url")
  ) %>%
    md_convert() %>%
    read_html() %>%
    html_node("p") %>%
    html_node("a") %>%
    html_attr("href") %>%
    expect_equal("/url")
})