Adding upstream version 110.0.1.upstream/110.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

5 files changed, 969 insertions, 0 deletions

diff --git a/devtools/shared/webconsole/test/xpcshell/.eslintrc.js b/devtools/shared/webconsole/test/xpcshell/.eslintrc.js
new file mode 100644
index 0000000000..8611c174f5
--- /dev/null
+++ b/devtools/shared/webconsole/test/xpcshell/.eslintrc.js
@@ -0,0 +1,6 @@
+"use strict";
+
+module.exports = {
+  // Extend from the common devtools xpcshell eslintrc config.
+  extends: "../../../../.eslintrc.xpcshell.js",
+};
diff --git a/devtools/shared/webconsole/test/xpcshell/head.js b/devtools/shared/webconsole/test/xpcshell/head.js
new file mode 100644
index 0000000000..e65552771e
--- /dev/null
+++ b/devtools/shared/webconsole/test/xpcshell/head.js
@@ -0,0 +1,10 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/* exported require */
+
+"use strict";
+
+var { require } = ChromeUtils.importESModule(
+  "resource://devtools/shared/loader/Loader.sys.mjs"
+);
diff --git a/devtools/shared/webconsole/test/xpcshell/test_analyze_input_string.js b/devtools/shared/webconsole/test/xpcshell/test_analyze_input_string.js
new file mode 100644
index 0000000000..3df015056f
--- /dev/null
+++ b/devtools/shared/webconsole/test/xpcshell/test_analyze_input_string.js
@@ -0,0 +1,225 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/publicdomain/zero/1.0/
+
+"use strict";
+const {
+  analyzeInputString,
+} = require("resource://devtools/shared/webconsole/analyze-input-string.js");
+
+add_task(() => {
+  const tests = [
+    {
+      desc: "simple property access",
+      input: `var a = {b: 1};a.b`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `var a = {b: 1};a`,
+        lastStatement: "a.b",
+        mainExpression: `a`,
+        matchProp: `b`,
+      },
+    },
+    {
+      desc: "deep property access",
+      input: `a.b.c`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `a.b`,
+        lastStatement: "a.b.c",
+        mainExpression: `a.b`,
+        matchProp: `c`,
+      },
+    },
+    {
+      desc: "element access",
+      input: `a["b`,
+      expected: {
+        isElementAccess: true,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `a`,
+        lastStatement: `a["b`,
+        mainExpression: `a`,
+        matchProp: `"b`,
+      },
+    },
+    {
+      desc: "element access without quotes",
+      input: `a[b`,
+      expected: {
+        isElementAccess: true,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `a`,
+        lastStatement: `a[b`,
+        mainExpression: `a`,
+        matchProp: `b`,
+      },
+    },
+    {
+      desc: "simple optional chaining access",
+      input: `a?.b`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `a`,
+        lastStatement: `a?.b`,
+        mainExpression: `a`,
+        matchProp: `b`,
+      },
+    },
+    {
+      desc: "deep optional chaining access",
+      input: `a?.b?.c`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `a?.b`,
+        lastStatement: `a?.b?.c`,
+        mainExpression: `a?.b`,
+        matchProp: `c`,
+      },
+    },
+    {
+      desc: "optional chaining element access",
+      input: `a?.["b`,
+      expected: {
+        isElementAccess: true,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `a`,
+        lastStatement: `a?.["b`,
+        mainExpression: `a`,
+        matchProp: `"b`,
+      },
+    },
+    {
+      desc: "optional chaining element access without quotes",
+      input: `a?.[b`,
+      expected: {
+        isElementAccess: true,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `a`,
+        lastStatement: `a?.[b`,
+        mainExpression: `a`,
+        matchProp: `b`,
+      },
+    },
+    {
+      desc: "deep optional chaining element access with quotes",
+      input: `var a = {b: 1, c: ["."]};     a?.["b"]?.c?.["d[.`,
+      expected: {
+        isElementAccess: true,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `var a = {b: 1, c: ["."]};     a?.["b"]?.c`,
+        lastStatement: `a?.["b"]?.c?.["d[.`,
+        mainExpression: `a?.["b"]?.c`,
+        matchProp: `"d[.`,
+      },
+    },
+    {
+      desc: "literal arrays with newline",
+      input: `[1,2,3,\n4\n].`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `[1,2,3,\n4\n]`,
+        lastStatement: `[1,2,3,4].`,
+        mainExpression: `[1,2,3,4]`,
+        matchProp: ``,
+      },
+    },
+    {
+      desc: "number literal with newline",
+      input: `1\n.`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `1\n`,
+        lastStatement: `1\n.`,
+        mainExpression: `1`,
+        matchProp: ``,
+      },
+    },
+    {
+      desc: "string literal",
+      input: `"abc".`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `"abc"`,
+        lastStatement: `"abc".`,
+        mainExpression: `"abc"`,
+        matchProp: ``,
+      },
+    },
+    {
+      desc: "string literal containing backslash",
+      input: `"\\n".`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `"\\n"`,
+        lastStatement: `"\\n".`,
+        mainExpression: `"\\n"`,
+        matchProp: ``,
+      },
+    },
+    {
+      desc: "single quote string literal containing backslash",
+      input: `'\\r'.`,
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `'\\r'`,
+        lastStatement: `'\\r'.`,
+        mainExpression: `'\\r'`,
+        matchProp: ``,
+      },
+    },
+    {
+      desc: "template string literal containing backslash",
+      input: "`\\\\`.",
+      expected: {
+        isElementAccess: false,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: "`\\\\`",
+        lastStatement: "`\\\\`.",
+        mainExpression: "`\\\\`",
+        matchProp: ``,
+      },
+    },
+    {
+      desc: "unterminated double quote string literal",
+      input: `"\n`,
+      expected: {
+        err: "unterminated string literal",
+      },
+    },
+    {
+      desc: "unterminated single quote string literal",
+      input: `'\n`,
+      expected: {
+        err: "unterminated string literal",
+      },
+    },
+    {
+      desc: "optional chaining operator with spaces",
+      input: `test  ?.    ["propA"]  ?.   [0]  ?.   ["propB"]  ?.  ['to`,
+      expected: {
+        isElementAccess: true,
+        isPropertyAccess: true,
+        expressionBeforePropertyAccess: `test  ?.    ["propA"]  ?.   [0]  ?.   ["propB"]  `,
+        lastStatement: `test  ?.    ["propA"]  ?.   [0]  ?.   ["propB"]  ?.  ['to`,
+        mainExpression: `test  ?.    ["propA"]  ?.   [0]  ?.   ["propB"]`,
+        matchProp: `'to`,
+      },
+    },
+  ];
+
+  for (const { input, desc, expected } of tests) {
+    const result = analyzeInputString(input);
+    for (const [key, value] of Object.entries(expected)) {
+      Assert.equal(value, result[key], `${desc} | ${key} has expected value`);
+    }
+  }
+});
diff --git a/devtools/shared/webconsole/test/xpcshell/test_js_property_provider.js b/devtools/shared/webconsole/test/xpcshell/test_js_property_provider.js
new file mode 100644
index 0000000000..984bbd5747
--- /dev/null
+++ b/devtools/shared/webconsole/test/xpcshell/test_js_property_provider.js
@@ -0,0 +1,719 @@
+// Any copyright is dedicated to the Public Domain.
+// http://creativecommons.org/publicdomain/zero/1.0/
+
+"use strict";
+const {
+  FallibleJSPropertyProvider: JSPropertyProvider,
+} = require("resource://devtools/shared/webconsole/js-property-provider.js");
+
+const { addDebuggerToGlobal } = ChromeUtils.importESModule(
+  "resource://gre/modules/jsdebugger.sys.mjs"
+);
+addDebuggerToGlobal(globalThis);
+
+function run_test() {
+  Services.prefs.setBoolPref(
+    "security.allow_parent_unrestricted_js_loads",
+    true
+  );
+  registerCleanupFunction(() => {
+    Services.prefs.clearUserPref("security.allow_parent_unrestricted_js_loads");
+  });
+
+  const testArray = `var testArray = [
+    {propA: "A"},
+    {
+      propB: "B",
+      propC: [
+        "D"
+      ]
+    },
+    [
+      {propE: "E"}
+    ]
+  ]`;
+
+  const testObject = 'var testObject = {"propA": [{"propB": "B"}]}';
+  const testHyphenated = 'var testHyphenated = {"prop-A": "res-A"}';
+  const testLet = "let foobar = {a: ''}; const blargh = {a: 1};";
+
+  const testGenerators = `
+  // Test with generator using a named function.
+  function* genFunc() {
+    for (let i = 0; i < 10; i++) {
+      yield i;
+    }
+  }
+  let gen1 = genFunc();
+  gen1.next();
+
+  // Test with generator using an anonymous function.
+  let gen2 = (function* () {
+    for (let i = 0; i < 10; i++) {
+      yield i;
+    }
+  })();`;
+
+  const testGetters = `
+    var testGetters = {
+      get x() {
+        return Object.create(null, Object.getOwnPropertyDescriptors({
+          hello: "",
+          world: "",
+        }));
+      },
+      get y() {
+        return Object.create(null, Object.getOwnPropertyDescriptors({
+          get y() {
+            return "plop";
+          },
+        }));
+      }
+    };
+  `;
+
+  const sandbox = Cu.Sandbox("http://example.com");
+  const dbg = new Debugger();
+  const dbgObject = dbg.addDebuggee(sandbox);
+  const dbgEnv = dbgObject.asEnvironment();
+  Cu.evalInSandbox(
+    `
+    const hello = Object.create(null, Object.getOwnPropertyDescriptors({world: 1}));
+    String.prototype.hello = hello;
+    Number.prototype.hello = hello;
+    Array.prototype.hello = hello;
+  `,
+    sandbox
+  );
+  Cu.evalInSandbox(testArray, sandbox);
+  Cu.evalInSandbox(testObject, sandbox);
+  Cu.evalInSandbox(testHyphenated, sandbox);
+  Cu.evalInSandbox(testLet, sandbox);
+  Cu.evalInSandbox(testGenerators, sandbox);
+  Cu.evalInSandbox(testGetters, sandbox);
+
+  info("Running tests with dbgObject");
+  runChecks(dbgObject, null, sandbox);
+
+  info("Running tests with dbgEnv");
+  runChecks(null, dbgEnv, sandbox);
+}
+
+function runChecks(dbgObject, environment, sandbox) {
+  const propertyProvider = (inputValue, options) =>
+    JSPropertyProvider({
+      dbgObject,
+      environment,
+      inputValue,
+      ...options,
+    });
+
+  info("Test that suggestions are given for 'this'");
+  let results = propertyProvider("t");
+  test_has_result(results, "this");
+
+  if (dbgObject != null) {
+    info("Test that suggestions are given for 'this.'");
+    results = propertyProvider("this.");
+    test_has_result(results, "testObject");
+
+    info("Test that suggestions are given for '(this).'");
+    results = propertyProvider("(this).");
+    test_has_result(results, "testObject");
+
+    info("Test that suggestions are given for deep 'this' properties access");
+    results = propertyProvider("(this).testObject.propA.");
+    test_has_result(results, "shift");
+
+    results = propertyProvider("(this).testObject.propA[");
+    test_has_result(results, `"shift"`);
+
+    results = propertyProvider("(this)['testObject']['propA'][");
+    test_has_result(results, `"shift"`);
+
+    results = propertyProvider("(this).testObject['propA'].");
+    test_has_result(results, "shift");
+
+    info("Test that no suggestions are given for 'this.this'");
+    results = propertyProvider("this.this");
+    test_has_no_results(results);
+  }
+
+  info("Test that suggestions are given for 'globalThis'");
+  results = propertyProvider("g");
+  test_has_result(results, "globalThis");
+
+  info("Test that suggestions are given for 'globalThis.'");
+  results = propertyProvider("globalThis.");
+  test_has_result(results, "testObject");
+
+  info("Test that suggestions are given for '(globalThis).'");
+  results = propertyProvider("(globalThis).");
+  test_has_result(results, "testObject");
+
+  info(
+    "Test that suggestions are given for deep 'globalThis' properties access"
+  );
+  results = propertyProvider("(globalThis).testObject.propA.");
+  test_has_result(results, "shift");
+
+  results = propertyProvider("(globalThis).testObject.propA[");
+  test_has_result(results, `"shift"`);
+
+  results = propertyProvider("(globalThis)['testObject']['propA'][");
+  test_has_result(results, `"shift"`);
+
+  results = propertyProvider("(globalThis).testObject['propA'].");
+  test_has_result(results, "shift");
+
+  info("Testing lexical scope issues (Bug 1207868)");
+  results = propertyProvider("foobar");
+  test_has_result(results, "foobar");
+
+  results = propertyProvider("foobar.");
+  test_has_result(results, "a");
+
+  results = propertyProvider("blargh");
+  test_has_result(results, "blargh");
+
+  results = propertyProvider("blargh.");
+  test_has_result(results, "a");
+
+  info("Test that suggestions are given for 'foo[n]' where n is an integer.");
+  results = propertyProvider("testArray[0].");
+  test_has_result(results, "propA");
+
+  info("Test that suggestions are given for multidimensional arrays.");
+  results = propertyProvider("testArray[2][0].");
+  test_has_result(results, "propE");
+
+  info("Test that suggestions are given for nested arrays.");
+  results = propertyProvider("testArray[1].propC[0].");
+  test_has_result(results, "indexOf");
+
+  info("Test that suggestions are given for literal arrays.");
+  results = propertyProvider("[1,2,3].");
+  test_has_result(results, "indexOf");
+
+  results = propertyProvider("[1,2,3].h");
+  test_has_result(results, "hello");
+
+  results = propertyProvider("[1,2,3].hello.w");
+  test_has_result(results, "world");
+
+  info("Test that suggestions are given for literal arrays with newlines.");
+  results = propertyProvider("[1,2,3,\n4\n].");
+  test_has_result(results, "indexOf");
+
+  info("Test that suggestions are given for literal strings.");
+  results = propertyProvider("'foo'.");
+  test_has_result(results, "charAt");
+  results = propertyProvider('"foo".');
+  test_has_result(results, "charAt");
+  results = propertyProvider("`foo`.");
+  test_has_result(results, "charAt");
+  results = propertyProvider("`foo doc`.");
+  test_has_result(results, "charAt");
+  results = propertyProvider('`foo " doc`.');
+  test_has_result(results, "charAt");
+  results = propertyProvider("`foo ' doc`.");
+  test_has_result(results, "charAt");
+  results = propertyProvider("'[1,2,3]'.");
+  test_has_result(results, "charAt");
+  results = propertyProvider("'foo'.h");
+  test_has_result(results, "hello");
+  results = propertyProvider("'foo'.hello.w");
+  test_has_result(results, "world");
+  results = propertyProvider(`"\\n".`);
+  test_has_result(results, "charAt");
+  results = propertyProvider(`'\\r'.`);
+  test_has_result(results, "charAt");
+  results = propertyProvider("`\\\\`.");
+  test_has_result(results, "charAt");
+
+  info("Test that suggestions are not given for syntax errors.");
+  results = propertyProvider("'foo\"");
+  Assert.equal(null, results);
+  results = propertyProvider("'foo d");
+  Assert.equal(null, results);
+  results = propertyProvider(`"foo d`);
+  Assert.equal(null, results);
+  results = propertyProvider("`foo d");
+  Assert.equal(null, results);
+  results = propertyProvider("[1,',2]");
+  Assert.equal(null, results);
+  results = propertyProvider("'[1,2].");
+  Assert.equal(null, results);
+  results = propertyProvider("'foo'..");
+  Assert.equal(null, results);
+
+  info("Test that suggestions are not given without a dot.");
+  results = propertyProvider("'foo'");
+  test_has_no_results(results);
+  results = propertyProvider("`foo`");
+  test_has_no_results(results);
+  results = propertyProvider("[1,2,3]");
+  test_has_no_results(results);
+  results = propertyProvider("[1,2,3].\n'foo'");
+  test_has_no_results(results);
+
+  info("Test that suggestions are not given for index that's out of bounds.");
+  results = propertyProvider("testArray[10].");
+  Assert.equal(null, results);
+
+  info("Test that invalid element access syntax does not return anything");
+  results = propertyProvider("testArray[][1].");
+  Assert.equal(null, results);
+
+  info("Test that deep element access works.");
+  results = propertyProvider("testObject['propA'][0].");
+  test_has_result(results, "propB");
+
+  results = propertyProvider("testArray[1]['propC'].");
+  test_has_result(results, "shift");
+
+  results = propertyProvider("testArray[1].propC[0][");
+  test_has_result(results, `"trim"`);
+
+  results = propertyProvider("testArray[1].propC[0].");
+  test_has_result(results, "trim");
+
+  info(
+    "Test that suggestions are displayed when variable is wrapped in parens"
+  );
+  results = propertyProvider("(testObject)['propA'][0].");
+  test_has_result(results, "propB");
+
+  results = propertyProvider("(testArray)[1]['propC'].");
+  test_has_result(results, "shift");
+
+  results = propertyProvider("(testArray)[1].propC[0][");
+  test_has_result(results, `"trim"`);
+
+  results = propertyProvider("(testArray)[1].propC[0].");
+  test_has_result(results, "trim");
+
+  info("Test that suggestions are given if there is an hyphen in the chain.");
+  results = propertyProvider("testHyphenated['prop-A'].");
+  test_has_result(results, "trim");
+
+  info("Test that we have suggestions for generators.");
+  const gen1Result = Cu.evalInSandbox("gen1.next().value", sandbox);
+  results = propertyProvider("gen1.");
+  test_has_result(results, "next");
+  info("Test that the generator next() was not executed");
+  const gen1NextResult = Cu.evalInSandbox("gen1.next().value", sandbox);
+  Assert.equal(gen1Result + 1, gen1NextResult);
+
+  info("Test with an anonymous generator.");
+  const gen2Result = Cu.evalInSandbox("gen2.next().value", sandbox);
+  results = propertyProvider("gen2.");
+  test_has_result(results, "next");
+  const gen2NextResult = Cu.evalInSandbox("gen2.next().value", sandbox);
+  Assert.equal(gen2Result + 1, gen2NextResult);
+
+  info(
+    "Test that getters are not executed if authorizedEvaluations is undefined"
+  );
+  results = propertyProvider("testGetters.x.");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  results = propertyProvider("testGetters.x[");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  results = propertyProvider("testGetters.x.hell");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  results = propertyProvider("testGetters.x['hell");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  info(
+    "Test that getters are not executed if authorizedEvaluations does not match"
+  );
+  results = propertyProvider("testGetters.x.", { authorizedEvaluations: [] });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  results = propertyProvider("testGetters.x.", {
+    authorizedEvaluations: [["testGetters"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  results = propertyProvider("testGetters.x.", {
+    authorizedEvaluations: [["testGtrs", "x"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  results = propertyProvider("testGetters.x.", {
+    authorizedEvaluations: [["x"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "x"],
+  });
+
+  info("Test that deep getter property access returns intermediate getters");
+  results = propertyProvider("testGetters.y.y.");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y"],
+  });
+
+  results = propertyProvider("testGetters['y'].y.");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y"],
+  });
+
+  results = propertyProvider("testGetters['y']['y'].");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y"],
+  });
+
+  results = propertyProvider("testGetters.y['y'].");
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y"],
+  });
+
+  info("Test that deep getter property access invoke intermediate getters");
+  results = propertyProvider("testGetters.y.y.", {
+    authorizedEvaluations: [["testGetters", "y"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y", "y"],
+  });
+
+  results = propertyProvider("testGetters['y'].y.", {
+    authorizedEvaluations: [["testGetters", "y"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y", "y"],
+  });
+
+  results = propertyProvider("testGetters['y']['y'].", {
+    authorizedEvaluations: [["testGetters", "y"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y", "y"],
+  });
+
+  results = propertyProvider("testGetters.y['y'].", {
+    authorizedEvaluations: [["testGetters", "y"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y", "y"],
+  });
+
+  info(
+    "Test that getters are executed if matching an authorizedEvaluation element"
+  );
+  results = propertyProvider("testGetters.x.", {
+    authorizedEvaluations: [["testGetters", "x"]],
+  });
+  test_has_exact_results(results, ["hello", "world"]);
+  Assert.ok(Object.keys(results).includes("isUnsafeGetter") === false);
+  Assert.ok(Object.keys(results).includes("getterPath") === false);
+
+  results = propertyProvider("testGetters.x.", {
+    authorizedEvaluations: [["testGetters", "x"], ["y"]],
+  });
+  test_has_exact_results(results, ["hello", "world"]);
+  Assert.ok(Object.keys(results).includes("isUnsafeGetter") === false);
+  Assert.ok(Object.keys(results).includes("getterPath") === false);
+
+  info("Test that executing getters filters with provided string");
+  results = propertyProvider("testGetters.x.hell", {
+    authorizedEvaluations: [["testGetters", "x"]],
+  });
+  test_has_exact_results(results, ["hello"]);
+
+  results = propertyProvider("testGetters.x['hell", {
+    authorizedEvaluations: [["testGetters", "x"]],
+  });
+  test_has_exact_results(results, ["'hello'"]);
+
+  info(
+    "Test children getters are not executed if not included in authorizedEvaluation"
+  );
+  results = propertyProvider("testGetters.y.y.", {
+    authorizedEvaluations: [["testGetters", "y", "y"]],
+  });
+  Assert.deepEqual(results, {
+    isUnsafeGetter: true,
+    getterPath: ["testGetters", "y"],
+  });
+
+  info(
+    "Test children getters are executed if matching an authorizedEvaluation element"
+  );
+  results = propertyProvider("testGetters.y.y.", {
+    authorizedEvaluations: [
+      ["testGetters", "y"],
+      ["testGetters", "y", "y"],
+    ],
+  });
+  test_has_result(results, "trim");
+
+  info("Test with number literals");
+  results = propertyProvider("1.");
+  Assert.ok(results === null, "Does not complete on possible floating number");
+
+  results = propertyProvider("(1)..");
+  Assert.ok(results === null, "Does not complete on invalid syntax");
+
+  results = propertyProvider("(1.1.).");
+  Assert.ok(results === null, "Does not complete on invalid syntax");
+
+  results = propertyProvider("1..");
+  test_has_result(results, "toFixed");
+
+  results = propertyProvider("1 .");
+  test_has_result(results, "toFixed");
+
+  results = propertyProvider("1\n.");
+  test_has_result(results, "toFixed");
+
+  results = propertyProvider(".1.");
+  test_has_result(results, "toFixed");
+
+  results = propertyProvider("1[");
+  test_has_result(results, `"toFixed"`);
+
+  results = propertyProvider("1[toFixed");
+  test_has_exact_results(results, [`"toFixed"`]);
+
+  results = propertyProvider("1['toFixed");
+  test_has_exact_results(results, ["'toFixed'"]);
+
+  results = propertyProvider("1.1[");
+  test_has_result(results, `"toFixed"`);
+
+  results = propertyProvider("(1).");
+  test_has_result(results, "toFixed");
+
+  results = propertyProvider("(.1).");
+  test_has_result(results, "toFixed");
+
+  results = propertyProvider("(1.1).");
+  test_has_result(results, "toFixed");
+
+  results = propertyProvider("(1).toFixed");
+  test_has_exact_results(results, ["toFixed"]);
+
+  results = propertyProvider("(1)[");
+  test_has_result(results, `"toFixed"`);
+
+  results = propertyProvider("(1.1)[");
+  test_has_result(results, `"toFixed"`);
+
+  results = propertyProvider("(1)[toFixed");
+  test_has_exact_results(results, [`"toFixed"`]);
+
+  results = propertyProvider("(1)['toFixed");
+  test_has_exact_results(results, ["'toFixed'"]);
+
+  results = propertyProvider("(1).h");
+  test_has_result(results, "hello");
+
+  results = propertyProvider("(1).hello.w");
+  test_has_result(results, "world");
+
+  info("Test access on dot-notation invalid property name");
+  results = propertyProvider("testHyphenated.prop");
+  Assert.ok(
+    !results.matches.has("prop-A"),
+    "Does not return invalid property name on dot access"
+  );
+
+  results = propertyProvider("testHyphenated['prop");
+  test_has_result(results, `'prop-A'`);
+
+  results = propertyProvider(`//t`);
+  Assert.ok(results === null, "Does not complete in inline comment");
+
+  results = propertyProvider(`// t`);
+  Assert.ok(
+    results === null,
+    "Does not complete in inline comment after space"
+  );
+
+  results = propertyProvider(`//I'm a comment\nt`);
+  test_has_result(results, "testObject");
+
+  results = propertyProvider(`1/t`);
+  test_has_result(results, "testObject");
+
+  results = propertyProvider(`/* t`);
+  Assert.ok(results === null, "Does not complete in multiline comment");
+
+  results = propertyProvider(`/*I'm\nt`);
+  Assert.ok(
+    results === null,
+    "Does not complete in multiline comment after line break"
+  );
+
+  results = propertyProvider(`/*I'm a comment\n \t * /t`);
+  Assert.ok(
+    results === null,
+    "Does not complete in multiline comment after line break and invalid comment end"
+  );
+
+  results = propertyProvider(`/*I'm a comment\n \t */t`);
+  test_has_result(results, "testObject");
+
+  results = propertyProvider(`/*I'm a comment\n \t */\n\nt`);
+  test_has_result(results, "testObject");
+
+  info("Test local expression variables");
+  results = propertyProvider("b", { expressionVars: ["a", "b", "c"] });
+  test_has_result(results, "b");
+  Assert.equal(results.matches.has("a"), false);
+  Assert.equal(results.matches.has("c"), false);
+
+  info(
+    "Test that local expression variables are not included when accessing an object properties"
+  );
+  results = propertyProvider("testObject.prop", {
+    expressionVars: ["propLocal"],
+  });
+  Assert.equal(results.matches.has("propLocal"), false);
+  test_has_result(results, "propA");
+
+  results = propertyProvider("testObject['prop", {
+    expressionVars: ["propLocal"],
+  });
+  test_has_result(results, "'propA'");
+  Assert.equal(results.matches.has("propLocal"), false);
+
+  info("Test that expression with optional chaining operator are completed");
+  results = propertyProvider("testObject?.prop");
+  test_has_result(results, "propA");
+
+  results = propertyProvider("testObject?.propA[0]?.propB?.to");
+  test_has_result(results, "toString");
+
+  results = propertyProvider("testObject?.propA?.[0]?.propB?.to");
+  test_has_result(results, "toString");
+
+  results = propertyProvider(
+    "testObject      ?.    propA[0]    ?.    propB  ?.   to"
+  );
+  test_has_result(results, "toString");
+
+  results = propertyProvider("testObject?.[prop");
+  test_has_result(results, '"propA"');
+
+  results = propertyProvider(`testObject?.["prop`);
+  test_has_result(results, '"propA"');
+
+  results = propertyProvider(`testObject?.['prop`);
+  test_has_result(results, `'propA'`);
+
+  results = propertyProvider(`testObject?.["propA"]?.[0]?.["propB"]?.["to`);
+  test_has_result(results, `"toString"`);
+
+  results = propertyProvider(
+    `testObject  ?.    ["propA"]  ?.   [0]  ?.   ["propB"]  ?.  ['to`
+  );
+  test_has_result(results, "'toString'");
+
+  results = propertyProvider("[1,2,3]?.");
+  test_has_result(results, "indexOf");
+
+  results = propertyProvider("'foo'?.");
+  test_has_result(results, "charAt");
+
+  results = propertyProvider("1?.");
+  test_has_result(results, "toFixed");
+
+  // check this doesn't throw since `propC` is not defined.
+  results = propertyProvider("testObject?.propC?.this?.does?.not?.exist?.d");
+
+  // check that ternary operator isn't mistaken for optional chaining
+  results = propertyProvider(`true?.3.to`);
+  test_has_result(results, `toExponential`);
+
+  results = propertyProvider(`true?.3?.to`);
+  test_has_result(results, `toExponential`);
+
+  // Test more ternary
+  results = propertyProvider(`true?t`);
+  test_has_result(results, `testObject`);
+
+  results = propertyProvider(`true??t`);
+  test_has_result(results, `testObject`);
+
+  results = propertyProvider(`true?/* comment */t`);
+  test_has_result(results, `testObject`);
+
+  results = propertyProvider(`true?<t`);
+  test_has_no_results(results);
+
+  // Test autocompletion on debugger statement does not throw
+  results = propertyProvider(`debugger.`);
+  Assert.ok(results === null, "Does not complete a debugger keyword");
+}
+
+/**
+ * A helper that ensures an empty array of results were found.
+ * @param Object results
+ *        The results returned by JSPropertyProvider.
+ */
+function test_has_no_results(results) {
+  Assert.notEqual(results, null);
+  Assert.equal(results.matches.size, 0);
+}
+/**
+ * A helper that ensures (required) results were found.
+ * @param Object results
+ *        The results returned by JSPropertyProvider.
+ * @param String requiredSuggestion
+ *        A suggestion that must be found from the results.
+ */
+function test_has_result(results, requiredSuggestion) {
+  Assert.notEqual(results, null);
+  Assert.ok(results.matches.size > 0);
+  Assert.ok(
+    results.matches.has(requiredSuggestion),
+    `<${requiredSuggestion}> found in ${[...results.matches.values()].join(
+      " - "
+    )}`
+  );
+}
+
+/**
+ * A helper that ensures results are the expected ones.
+ * @param Object results
+ *        The results returned by JSPropertyProvider.
+ * @param Array expectedMatches
+ *        An array of the properties that should be returned by JsPropertyProvider.
+ */
+function test_has_exact_results(results, expectedMatches) {
+  Assert.deepEqual([...results.matches], expectedMatches);
+}
diff --git a/devtools/shared/webconsole/test/xpcshell/xpcshell.ini b/devtools/shared/webconsole/test/xpcshell/xpcshell.ini
new file mode 100644
index 0000000000..a0d7e75ad1
--- /dev/null
+++ b/devtools/shared/webconsole/test/xpcshell/xpcshell.ini
@@ -0,0 +1,9 @@
+[DEFAULT]
+tags = devtools
+head = head.js
+firefox-appdir = browser
+skip-if = toolkit == 'android'
+support-files =
+
+[test_analyze_input_string.js]
+[test_js_property_provider.js]