1 files changed, 126 insertions, 0 deletions
diff --git a/devtools/client/shared/source-map-loader/test/browser/browser_wasm-source-map.js b/devtools/client/shared/source-map-loader/test/browser/browser_wasm-source-map.js
new file mode 100644
index 0000000000..0f69d7b038
--- /dev/null
+++ b/devtools/client/shared/source-map-loader/test/browser/browser_wasm-source-map.js
@@ -0,0 +1,126 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test source mappings WASM sources.
+// This test is quite general and test various functions.
+
+const {
+  WasmRemap,
+} = require("resource://devtools/client/shared/source-map-loader/utils/wasmRemap.js");
+const {
+  SourceMapConsumer,
+} = require("resource://devtools/client/shared/vendor/source-map/source-map.js");
+
+SourceMapConsumer.initialize({
+  "lib/mappings.wasm":
+    "resource://devtools/client/shared/vendor/source-map/lib/mappings.wasm",
+});
+
+add_task(async function smokeTest() {
+  const testMap1 = {
+    version: 3,
+    file: "min.js",
+    names: [],
+    sources: ["one.js", "two.js"],
+    sourceRoot: "/the/root",
+    mappings: "CAAC,IAAM,SACU,GAAC",
+  };
+  const testMap1Entries = [
+    { offset: 1, line: 1, column: 1 },
+    { offset: 5, line: 1, column: 7 },
+    { offset: 14, line: 2, column: 17 },
+    { offset: 17, line: 2, column: 18 },
+  ];
+
+  const map1 = await new SourceMapConsumer(testMap1);
+
+  const remap1 = new WasmRemap(map1);
+
+  is(remap1.file, "min.js");
+  is(remap1.hasContentsOfAllSources(), false);
+  is(remap1.sources.length, 2);
+  is(remap1.sources[0], "/the/root/one.js");
+  is(remap1.sources[1], "/the/root/two.js");
+
+  const expectedEntries = testMap1Entries.slice(0);
+  remap1.eachMapping(function (entry) {
+    const expected = expectedEntries.shift();
+    is(entry.generatedLine, expected.offset);
+    is(entry.generatedColumn, 0);
+    is(entry.originalLine, expected.line);
+    is(entry.originalColumn, expected.column);
+    is(entry.name, null);
+  });
+
+  const pos1 = remap1.originalPositionFor({ line: 5, column: 0 });
+  is(pos1.line, 1);
+  is(pos1.column, 7);
+  is(pos1.source, "/the/root/one.js");
+
+  const pos2 = remap1.generatedPositionFor({
+    source: "/the/root/one.js",
+    line: 2,
+    column: 18,
+  });
+  is(pos2.line, 17);
+  is(pos2.column, 0);
+  is(pos2.lastColumn, undefined);
+
+  remap1.computeColumnSpans();
+  const pos3 = remap1.allGeneratedPositionsFor({
+    source: "/the/root/one.js",
+    line: 2,
+    column: 17,
+  });
+  is(pos3.length, 1);
+  is(pos3[0].line, 14);
+  is(pos3[0].column, 0);
+  is(pos3[0].lastColumn, 0);
+
+  map1.destroy();
+});
+
+add_task(async function contentPresents() {
+  const testMap2 = {
+    version: 3,
+    file: "none.js",
+    names: [],
+    sources: ["zero.js"],
+    mappings: "",
+    sourcesContent: ["//test"],
+  };
+
+  const map2 = await new SourceMapConsumer(testMap2);
+  const remap2 = new WasmRemap(map2);
+  is(remap2.file, "none.js");
+  ok(remap2.hasContentsOfAllSources());
+  is(remap2.sourceContentFor("zero.js"), "//test");
+
+  map2.destroy();
+});
+
+add_task(async function readAndTransposeWasmMap() {
+  const source = {
+    id: "wasm.js",
+    sourceMapBaseURL: "wasm:http://example.com/whatever/:min.js",
+    sourceMapURL: `${URL_ROOT}fixtures/wasm.js.map`,
+    isWasm: true,
+  };
+
+  const urls = await gSourceMapLoader.getOriginalURLs(source);
+  Assert.deepEqual(urls, [
+    {
+      id: "wasm.js/originalSource-63954a1c231200652c0d99c6a69cd178",
+      url: `${URL_ROOT}fixtures/one.js`,
+    },
+  ]);
+
+  const { line, column } = await gSourceMapLoader.getOriginalLocation({
+    sourceId: source.id,
+    line: 5,
+  });
+  is(line, 1);
+  is(column, 7);
+});