1 files changed, 150 insertions, 0 deletions
diff --git a/devtools/client/shared/test/browser_filter-editor-01.js b/devtools/client/shared/test/browser_filter-editor-01.js
new file mode 100644
index 0000000000..557a02857c
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+++ b/devtools/client/shared/test/browser_filter-editor-01.js
@@ -0,0 +1,150 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Tests that the Filter Editor Widget parses filter values correctly (setCssValue)
+
+const {
+  CSSFilterEditorWidget,
+} = require("resource://devtools/client/shared/widgets/FilterWidget.js");
+
+const TEST_URI = CHROME_URL_ROOT + "doc_filter-editor-01.html";
+const { getCSSLexer } = require("resource://devtools/shared/css/lexer.js");
+
+// Verify that the given string consists of a valid CSS URL token.
+// Return true on success, false on error.
+function verifyURL(string) {
+  const lexer = getCSSLexer(string);
+
+  const token = lexer.nextToken();
+  if (!token || token.tokenType !== "url") {
+    return false;
+  }
+
+  return lexer.nextToken() === null;
+}
+
+add_task(async function () {
+  const { doc } = await createHost("bottom", TEST_URI);
+
+  const container = doc.querySelector("#filter-container");
+  const widget = new CSSFilterEditorWidget(container, "none");
+
+  info("Test parsing of a valid CSS Filter value");
+  widget.setCssValue("blur(2px) contrast(200%)");
+  is(
+    widget.getCssValue(),
+    "blur(2px) contrast(200%)",
+    "setCssValue should work for computed values"
+  );
+
+  info("Test parsing of space-filled value");
+  widget.setCssValue("blur(   2px  )   contrast(  2  )");
+  is(
+    widget.getCssValue(),
+    "blur(2px) contrast(200%)",
+    "setCssValue should work for spaced values"
+  );
+
+  info("Test parsing of string-typed values");
+  widget.setCssValue(
+    "drop-shadow( 2px  1px 5px black) url( example.svg#filter )"
+  );
+
+  is(
+    widget.getCssValue(),
+    "drop-shadow(2px  1px 5px black) url(example.svg#filter)",
+    "setCssValue should work for string-typed values"
+  );
+
+  info("Test parsing of mixed-case function names");
+  widget.setCssValue("BLUR(2px) Contrast(200%) Drop-Shadow(2px 1px 5px Black)");
+  is(
+    widget.getCssValue(),
+    "BLUR(2px) Contrast(200%) Drop-Shadow(2px 1px 5px Black)",
+    "setCssValue should work for mixed-case function names"
+  );
+
+  info("Test parsing of invalid filter value");
+  widget.setCssValue("totallyinvalid");
+  is(
+    widget.getCssValue(),
+    "none",
+    "setCssValue should turn completely invalid value to 'none'"
+  );
+
+  info("Test parsing of invalid function argument");
+  widget.setCssValue("blur('hello')");
+  is(
+    widget.getCssValue(),
+    "blur(0px)",
+    "setCssValue should replace invalid function argument with default"
+  );
+
+  info("Test parsing of invalid function argument #2");
+  widget.setCssValue("drop-shadow(whatever)");
+  is(
+    widget.getCssValue(),
+    "drop-shadow()",
+    "setCssValue should replace invalid drop-shadow argument with empty string"
+  );
+
+  info("Test parsing of mixed invalid argument");
+  widget.setCssValue("contrast(5%) whatever invert('xxx')");
+  is(
+    widget.getCssValue(),
+    "contrast(5%) invert(0%)",
+    "setCssValue should handle multiple errors"
+  );
+
+  info("Test parsing of 'unset'");
+  widget.setCssValue("unset");
+  is(widget.getCssValue(), "unset", "setCssValue should handle 'unset'");
+  info("Test parsing of 'initial'");
+  widget.setCssValue("initial");
+  is(widget.getCssValue(), "initial", "setCssValue should handle 'initial'");
+  info("Test parsing of 'inherit'");
+  widget.setCssValue("inherit");
+  is(widget.getCssValue(), "inherit", "setCssValue should handle 'inherit'");
+
+  info("Test parsing of quoted URL");
+  widget.setCssValue("url('invalid ) when ) unquoted')");
+  is(
+    widget.getCssValue(),
+    "url('invalid ) when ) unquoted')",
+    "setCssValue should re-quote single-quoted URL contents"
+  );
+  widget.setCssValue('url("invalid ) when ) unquoted")');
+  is(
+    widget.getCssValue(),
+    'url("invalid ) when ) unquoted")',
+    "setCssValue should re-quote double-quoted URL contents"
+  );
+  widget.setCssValue("url(ordinary)");
+  is(
+    widget.getCssValue(),
+    "url(ordinary)",
+    "setCssValue should not quote ordinary unquoted URL contents"
+  );
+
+  const quotedurl =
+    "url(invalid\\ \\)\\ {\\\twhen\\ }\\ ;\\ \\\\unquoted\\'\\\")";
+  ok(verifyURL(quotedurl), "weird URL is valid");
+  widget.setCssValue(quotedurl);
+  is(
+    widget.getCssValue(),
+    quotedurl,
+    "setCssValue should re-quote weird unquoted URL contents"
+  );
+
+  const dataurl =
+    "url(data:image/svg+xml;utf8,<svg\\ " +
+    'xmlns=\\"http://www.w3.org/2000/svg\\"><filter\\ id=\\"blur\\">' +
+    '<feGaussianBlur\\ stdDeviation=\\"3\\"/></filter></svg>#blur)';
+  ok(verifyURL(dataurl), "data URL is valid");
+  widget.setCssValue(dataurl);
+  is(widget.getCssValue(), dataurl, "setCssValue should not mangle data urls");
+
+  widget.destroy();
+});