context("querySelector-xml2") test_that("querySelector returns a single node or NULL", { library(xml2) doc <- read_xml('<a><b id="#test"/><c class="ex"/><c class="xmp"/></a>') p <- function(x) { if (is.null(x)) x else as.character(x) } expect_that(p(querySelector(doc, "a")), equals(p(xml_find_first(doc, "//a")))) expect_that(p(querySelector(doc, "*", prefix = "")), equals(p(xml_find_first(doc, "*")))) expect_that(p(querySelector(doc, "d")), equals(NULL)) expect_that(p(querySelector(doc, "c")), equals(p(xml_find_first(doc, "//c")))) }) test_that("querySelectorAll returns expected nodes", { library(xml2) doc <- read_xml('<a><b id="#test"/><c class="ex"/><c class="xmp"/></a>') p <- function(x) { lapply(x, function(node) as.character(node)) } expect_that(p(querySelectorAll(doc, "a")), equals(p(xml_find_all(doc, "//a")))) expect_that(p(querySelectorAll(doc, "*", prefix = "")), equals(p(xml_find_all(doc, "*")))) expect_that(p(querySelectorAll(doc, "c")), equals(p(xml_find_all(doc, "//c")))) }) test_that("querySelectorAll returns empty list for no match", { library(xml2) doc <- read_xml('<a><b id="#test"/><c class="ex"/><c class="xmp"/></a>') p <- function(x) { lapply(x, function(node) as.character(node)) } expect_that(p(querySelectorAll(doc, "d")), equals(p(xml_find_all(doc, "//d")))) }) test_that("querySelector handles namespaces", { library(xml2) doc <- read_xml('<svg xmlns="http://www.w3.org/2000/svg"><circle cx="10" cy="10" r="10"/><circle cx="20" cy="20" r="20"/><circle cx="30" cy="30" r="30"/></svg>') p <- function(x) { if (is.null(x)) x else as.character(x) } expect_that(querySelector(doc, "circle"), equals(NULL)) expect_that(querySelector(doc, "circle", ns = c(svg = "http://www.w3.org/2000/svg")), equals(NULL)) expect_that(p(querySelector(doc, "svg|circle", ns = c(svg = "http://www.w3.org/2000/svg"))), equals(p(xml_find_all(doc, "//svg:circle", ns = c(svg = "http://www.w3.org/2000/svg"))[[1]]))) # now with querySelectorNS expect_that(querySelectorNS(doc, "circle", c(svg = "http://www.w3.org/2000/svg")), equals(NULL)) expect_that(p(querySelectorNS(doc, "svg|circle", c(svg = "http://www.w3.org/2000/svg"))), equals(p(xml_find_all(doc, "//svg:circle", ns = c(svg = "http://www.w3.org/2000/svg"))[[1]]))) }) test_that("querySelectorAll handles namespaces", { library(xml2) doc <- read_xml('<svg xmlns="http://www.w3.org/2000/svg"><circle cx="10" cy="10" r="10"/><circle cx="20" cy="20" r="20"/><circle cx="30" cy="30" r="30"/></svg>') p <- function(x) { lapply(x, function(node) as.character(node)) } expect_that(p(querySelectorAll(doc, "circle")), equals(p(xml_find_all(doc, "//circle")))) expect_that(p(querySelectorAll(doc, "circle", ns = c(svg = "http://www.w3.org/2000/svg"))), equals(p(xml_find_all(doc, "//circle", ns = c(svg = "http://www.w3.org/2000/svg"))))) expect_that(p(querySelectorAll(doc, "svg|circle", ns = c(svg = "http://www.w3.org/2000/svg"))), equals(p(xml_find_all(doc, "//svg:circle", ns = c(svg = "http://www.w3.org/2000/svg"))))) # now with querySelectorAllNS expect_that(p(querySelectorAllNS(doc, "circle", c(svg = "http://www.w3.org/2000/svg"))), equals(p(xml_find_all(doc, "//circle", ns = c(svg = "http://www.w3.org/2000/svg"))))) expect_that(p(querySelectorAllNS(doc, "svg|circle", c(svg = "http://www.w3.org/2000/svg"))), equals(p(xml_find_all(doc, "//svg:circle", ns = c(svg = "http://www.w3.org/2000/svg"))))) }) test_that("querySelector methods handle invalid arguments", { library(xml2) doc <- read_xml('<a><b id="#test"/><c class="ex"/><c class="xmp"/></a>') expect_error(querySelector(doc), "A valid selector (character vector) must be provided.", fixed = TRUE) expect_error(querySelectorAll(doc), "A valid selector (character vector) must be provided.", fixed = TRUE) expect_error(querySelectorNS(doc), "A valid selector (character vector) must be provided.", fixed = TRUE) expect_error(querySelectorAllNS(doc), "A valid selector (character vector) must be provided.", fixed = TRUE) expect_error(querySelectorNS(doc, "a"), "A namespace must be provided.", fixed = TRUE) expect_error(querySelectorNS(doc, "a", NULL), "A namespace must be provided.", fixed = TRUE) expect_error(querySelectorNS(doc, "a", character(0)), "A namespace must be provided.", fixed = TRUE) expect_error(querySelectorAllNS(doc, "a"), "A namespace must be provided.", fixed = TRUE) expect_error(querySelectorAllNS(doc, "a", NULL), "A namespace must be provided.", fixed = TRUE) expect_error(querySelectorAllNS(doc, "a", character(0)), "A namespace must be provided.", fixed = TRUE) })
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