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-rw-r--r--toolkit/modules/tests/xpcshell/test_CanonicalJSON.js173
1 files changed, 173 insertions, 0 deletions
diff --git a/toolkit/modules/tests/xpcshell/test_CanonicalJSON.js b/toolkit/modules/tests/xpcshell/test_CanonicalJSON.js
new file mode 100644
index 0000000000..3b7e92f049
--- /dev/null
+++ b/toolkit/modules/tests/xpcshell/test_CanonicalJSON.js
@@ -0,0 +1,173 @@
+const { CanonicalJSON } = ChromeUtils.import(
+ "resource://gre/modules/CanonicalJSON.jsm"
+);
+
+add_task(async function test_canonicalJSON_should_preserve_array_order() {
+ const input = ["one", "two", "three"];
+ // No sorting should be done on arrays.
+ Assert.equal(CanonicalJSON.stringify(input), '["one","two","three"]');
+});
+
+add_task(async function test_canonicalJSON_orders_object_keys() {
+ const input = [
+ {
+ b: ["two", "three"],
+ a: ["zero", "one"],
+ },
+ ];
+ Assert.equal(
+ CanonicalJSON.stringify(input),
+ '[{"a":["zero","one"],"b":["two","three"]}]'
+ );
+});
+
+add_task(async function test_canonicalJSON_orders_nested_object_keys() {
+ const input = [
+ {
+ b: { d: "d", c: "c" },
+ a: { b: "b", a: "a" },
+ },
+ ];
+ Assert.equal(
+ CanonicalJSON.stringify(input),
+ '[{"a":{"a":"a","b":"b"},"b":{"c":"c","d":"d"}}]'
+ );
+});
+
+add_task(async function test_canonicalJSON_escapes_unicode_values() {
+ Assert.equal(CanonicalJSON.stringify([{ key: "✓" }]), '[{"key":"\\u2713"}]');
+ // Unicode codepoints should be output in lowercase.
+ Assert.equal(CanonicalJSON.stringify([{ key: "é" }]), '[{"key":"\\u00e9"}]');
+});
+
+add_task(async function test_canonicalJSON_escapes_unicode_object_keys() {
+ Assert.equal(
+ CanonicalJSON.stringify([{ é: "check" }]),
+ '[{"\\u00e9":"check"}]'
+ );
+});
+
+add_task(async function test_canonicalJSON_does_not_alter_input() {
+ const records = [
+ { foo: "bar", last_modified: "12345", id: "1" },
+ { bar: "baz", last_modified: "45678", id: "2" },
+ ];
+ const serializedJSON = JSON.stringify(records);
+ CanonicalJSON.stringify(records);
+ Assert.equal(JSON.stringify(records), serializedJSON);
+});
+
+add_task(async function test_canonicalJSON_preserves_data() {
+ const records = [
+ { foo: "bar", last_modified: "12345", id: "1" },
+ { bar: "baz", last_modified: "45678", id: "2" },
+ ];
+ const expected =
+ '[{"foo":"bar","id":"1","last_modified":"12345"},' +
+ '{"bar":"baz","id":"2","last_modified":"45678"}]';
+ Assert.equal(CanonicalJSON.stringify(records), expected);
+});
+
+add_task(async function test_canonicalJSON_does_not_add_space_separators() {
+ const records = [
+ { foo: "bar", last_modified: "12345", id: "1" },
+ { bar: "baz", last_modified: "45678", id: "2" },
+ ];
+ const serialized = CanonicalJSON.stringify(records);
+ Assert.ok(!serialized.includes(" "));
+});
+
+add_task(async function test_canonicalJSON_serializes_empty_object() {
+ Assert.equal(CanonicalJSON.stringify({}), "{}");
+});
+
+add_task(async function test_canonicalJSON_serializes_empty_array() {
+ Assert.equal(CanonicalJSON.stringify([]), "[]");
+});
+
+add_task(async function test_canonicalJSON_serializes_NaN() {
+ Assert.equal(CanonicalJSON.stringify(NaN), "null");
+});
+
+add_task(async function test_canonicalJSON_serializes_inf() {
+ // This isn't part of the JSON standard.
+ Assert.equal(CanonicalJSON.stringify(Infinity), "null");
+});
+
+add_task(async function test_canonicalJSON_serializes_empty_string() {
+ Assert.equal(CanonicalJSON.stringify(""), '""');
+});
+
+add_task(async function test_canonicalJSON_escapes_backslashes() {
+ Assert.equal(CanonicalJSON.stringify("This\\and this"), '"This\\\\and this"');
+});
+
+add_task(async function test_canonicalJSON_handles_signed_zeros() {
+ // do_check_eq doesn't support comparison of -0 and 0 properly.
+ Assert.ok(CanonicalJSON.stringify(-0) === "-0");
+ Assert.ok(CanonicalJSON.stringify(0) === "0");
+});
+
+add_task(async function test_canonicalJSON_with_deeply_nested_dicts() {
+ const records = [
+ {
+ a: {
+ b: "b",
+ a: "a",
+ c: {
+ b: "b",
+ a: "a",
+ c: ["b", "a", "c"],
+ d: { b: "b", a: "a" },
+ id: "1",
+ e: 1,
+ f: [2, 3, 1],
+ g: {
+ 2: 2,
+ 3: 3,
+ 1: {
+ b: "b",
+ a: "a",
+ c: "c",
+ },
+ },
+ },
+ },
+ id: "1",
+ },
+ ];
+ const expected =
+ '[{"a":{"a":"a","b":"b","c":{"a":"a","b":"b","c":["b","a","c"],' +
+ '"d":{"a":"a","b":"b"},"e":1,"f":[2,3,1],"g":{' +
+ '"1":{"a":"a","b":"b","c":"c"},"2":2,"3":3},"id":"1"}},"id":"1"}]';
+
+ Assert.equal(CanonicalJSON.stringify(records), expected);
+});
+
+add_task(async function test_canonicalJSON_should_use_scientific_notation() {
+ /*
+ We globally follow the Python float representation, except for exponents < 10
+ where we drop the leading zero
+ */
+ Assert.equal(CanonicalJSON.stringify(0.00099), "0.00099");
+ Assert.equal(CanonicalJSON.stringify(0.000011), "0.000011");
+ Assert.equal(CanonicalJSON.stringify(0.0000011), "0.0000011");
+ Assert.equal(CanonicalJSON.stringify(0.000001), "0.000001");
+ Assert.equal(CanonicalJSON.stringify(0.00000099), "9.9e-7");
+ Assert.equal(CanonicalJSON.stringify(0.0000001), "1e-7");
+ Assert.equal(CanonicalJSON.stringify(0.000000930258908), "9.30258908e-7");
+ Assert.equal(CanonicalJSON.stringify(0.00000000000068272), "6.8272e-13");
+ Assert.equal(
+ CanonicalJSON.stringify(Math.pow(10, 20)),
+ "100000000000000000000"
+ );
+ Assert.equal(CanonicalJSON.stringify(Math.pow(10, 21)), "1e+21");
+ Assert.equal(
+ CanonicalJSON.stringify(Math.pow(10, 15) + 0.1),
+ "1000000000000000.1"
+ );
+ Assert.equal(
+ CanonicalJSON.stringify(Math.pow(10, 16) * 1.1),
+ "11000000000000000"
+ );
+});