1 files changed, 197 insertions, 0 deletions
diff --git a/toolkit/components/viewsource/test/browser/browser_viewsourceprefs.js b/toolkit/components/viewsource/test/browser/browser_viewsourceprefs.js
new file mode 100644
index 0000000000..35e932e8e4
--- /dev/null
+++ b/toolkit/components/viewsource/test/browser/browser_viewsourceprefs.js
@@ -0,0 +1,197 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/
+ */
+
+var plaintextURL = "data:text/plain,hello+world";
+var htmlURL = "about:mozilla";
+
+add_task(async function setup() {
+  registerCleanupFunction(function() {
+    SpecialPowers.clearUserPref("view_source.tab_size");
+    SpecialPowers.clearUserPref("view_source.wrap_long_lines");
+    SpecialPowers.clearUserPref("view_source.syntax_highlight");
+  });
+});
+
+add_task(async function() {
+  await exercisePrefs(plaintextURL, false);
+  await exercisePrefs(htmlURL, true);
+});
+
+async function removeChecked(browser, id) {
+  await SpecialPowers.spawn(browser, [id], async function(id) {
+    let item = content.document.getElementById(id);
+    if (item.getAttribute("checked") == "false") {
+      item.removeAttribute("checked");
+    }
+  });
+}
+
+async function hasAttribute(browser, id, attribute) {
+  return SpecialPowers.spawn(browser, [{ id, attribute }], async function(arg) {
+    let item = content.document.getElementById(arg.id);
+    return item.hasAttribute(arg.attribute);
+  });
+}
+
+var exercisePrefs = async function(source, highlightable) {
+  let tab = await openDocument(source);
+  let browser = tab.linkedBrowser;
+
+  const wrapMenuItem = "wrapLongLines";
+  const syntaxMenuItem = "highlightSyntax";
+
+  // Strip checked="false" attributes, since we're not interested in them.
+  await removeChecked(browser, wrapMenuItem);
+  await removeChecked(browser, syntaxMenuItem);
+
+  // Test the default states of these menu items.
+  is(
+    await hasAttribute(browser, wrapMenuItem, "checked"),
+    false,
+    "Wrap menu item not checked by default"
+  );
+  is(
+    await hasAttribute(browser, syntaxMenuItem, "checked"),
+    true,
+    "Syntax menu item checked by default"
+  );
+
+  await checkStyle(browser, "-moz-tab-size", 4);
+  await checkStyle(browser, "white-space", "pre");
+
+  // Next, test that the Wrap Long Lines menu item works.
+  let prefReady = waitForPrefChange("view_source.wrap_long_lines");
+  await simulateClick(browser, wrapMenuItem);
+  is(
+    await hasAttribute(browser, wrapMenuItem, "checked"),
+    true,
+    "Wrap menu item checked"
+  );
+  await prefReady;
+  is(
+    SpecialPowers.getBoolPref("view_source.wrap_long_lines"),
+    true,
+    "Wrap pref set"
+  );
+
+  await checkStyle(browser, "white-space", "pre-wrap");
+
+  prefReady = waitForPrefChange("view_source.wrap_long_lines");
+  await simulateClick(browser, wrapMenuItem);
+  is(
+    await hasAttribute(browser, wrapMenuItem, "checked"),
+    false,
+    "Wrap menu item unchecked"
+  );
+  await prefReady;
+  is(
+    SpecialPowers.getBoolPref("view_source.wrap_long_lines"),
+    false,
+    "Wrap pref set"
+  );
+  await checkStyle(browser, "white-space", "pre");
+
+  // Check that the Syntax Highlighting menu item works.
+  prefReady = waitForPrefChange("view_source.syntax_highlight");
+  await simulateClick(browser, syntaxMenuItem);
+  is(
+    await hasAttribute(browser, syntaxMenuItem, "checked"),
+    false,
+    "Syntax menu item unchecked"
+  );
+  await prefReady;
+  is(
+    SpecialPowers.getBoolPref("view_source.syntax_highlight"),
+    false,
+    "Syntax highlighting pref set"
+  );
+  await checkHighlight(browser, false);
+
+  prefReady = waitForPrefChange("view_source.syntax_highlight");
+  simulateClick(browser, syntaxMenuItem);
+  is(
+    await hasAttribute(browser, syntaxMenuItem, "checked"),
+    true,
+    "Syntax menu item checked"
+  );
+  await prefReady;
+  is(
+    SpecialPowers.getBoolPref("view_source.syntax_highlight"),
+    true,
+    "Syntax highlighting pref set"
+  );
+  await checkHighlight(browser, highlightable);
+  gBrowser.removeTab(tab);
+
+  // Open a new view-source window to check that the prefs are obeyed.
+  SpecialPowers.setIntPref("view_source.tab_size", 2);
+  SpecialPowers.setBoolPref("view_source.wrap_long_lines", true);
+  SpecialPowers.setBoolPref("view_source.syntax_highlight", false);
+
+  tab = await openDocument(source);
+  browser = tab.linkedBrowser;
+
+  // Strip checked="false" attributes, since we're not interested in them.
+  await removeChecked(browser, wrapMenuItem);
+  await removeChecked(browser, syntaxMenuItem);
+
+  is(
+    await hasAttribute(browser, wrapMenuItem, "checked"),
+    true,
+    "Wrap menu item checked"
+  );
+  is(
+    await hasAttribute(browser, syntaxMenuItem, "checked"),
+    false,
+    "Syntax menu item unchecked"
+  );
+  await checkStyle(browser, "-moz-tab-size", 2);
+  await checkStyle(browser, "white-space", "pre-wrap");
+  await checkHighlight(browser, false);
+
+  SpecialPowers.clearUserPref("view_source.tab_size");
+  SpecialPowers.clearUserPref("view_source.wrap_long_lines");
+  SpecialPowers.clearUserPref("view_source.syntax_highlight");
+
+  gBrowser.removeTab(tab);
+};
+
+// Simulate a menu item click, including toggling the checked state.
+// This saves us from opening the menu and trying to click on the item,
+// which doesn't work on Mac OS X.
+async function simulateClick(browser, id) {
+  return SpecialPowers.spawn(browser, [id], async function(id) {
+    let item = content.document.getElementById(id);
+    if (item.hasAttribute("checked")) {
+      item.removeAttribute("checked");
+    } else {
+      item.setAttribute("checked", "true");
+    }
+
+    item.click();
+  });
+}
+
+var checkStyle = async function(browser, styleProperty, expected) {
+  let value = await SpecialPowers.spawn(
+    browser,
+    [styleProperty],
+    async function(styleProperty) {
+      let style = content.getComputedStyle(content.document.body);
+      return style.getPropertyValue(styleProperty);
+    }
+  );
+  is(value, "" + expected, "Correct value of " + styleProperty);
+};
+
+var checkHighlight = async function(browser, expected) {
+  let highlighted = await SpecialPowers.spawn(browser, [], async function() {
+    let spans = content.document.getElementsByTagName("span");
+    return Array.prototype.some.call(spans, span => {
+      let style = content.getComputedStyle(span);
+      return style.getPropertyValue("color") !== "rgb(0, 0, 0)";
+    });
+  });
+  is(highlighted, expected, "Syntax highlighting " + (expected ? "on" : "off"));
+};