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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
* vim: sw=2 ts=2 et lcs=trail\:.,tab\:>~ :
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at https://mozilla.org/MPL/2.0/. */
#include "gtest/gtest.h"
#include "mozilla/gtest/nsUserCharacteristics.h"
#include "mozilla/glean/GleanPings.h"
#include "mozilla/glean/ResistfingerprintingMetrics.h"
#include "mozilla/Preferences.h"
using namespace mozilla;
// MathML prefs and their short names (must match nsUserCharacteristics.cpp)
static const struct {
const char* pref;
const char* shortName;
} kMathMLPrefs[] = {
{"mathml.disabled", "dis"},
{"mathml.scale_stretchy_operators.enabled", "str"},
{"mathml.mathspace_names.disabled", "spc"},
{"mathml.rtl_operator_mirroring.enabled", "rtl"},
{"mathml.mathvariant_styling_fallback.disabled", "var"},
{"mathml.math_shift.enabled", "shf"},
{"mathml.operator_dictionary_accent.disabled", "acc"},
{"mathml.legacy_mathvariant_attribute.disabled", "leg"},
{"mathml.font_family_math.enabled", "fnt"},
};
static void ClearAllMathMLPrefs() {
for (const auto& p : kMathMLPrefs) {
Preferences::ClearUser(p.pref);
}
}
TEST(ResistFingerprinting, UserCharacteristics_MathMLPrefs_Default)
{
ClearAllMathMLPrefs();
ASSERT_TRUE(mozilla::glean_pings::UserCharacteristics.TestSubmission(
[](const nsACString& aReason) {
auto result =
mozilla::glean::characteristics::mathml_diag_prefs_modified
.TestGetValue()
.unwrap();
// When no prefs are modified, should be empty string
ASSERT_TRUE(result.isNothing() || result.value().IsEmpty());
},
[]() {
testing::PopulateMathMLPrefs();
mozilla::glean_pings::UserCharacteristics.Submit();
}));
}
TEST(ResistFingerprinting, UserCharacteristics_MathMLPrefs_SingleTrue)
{
ClearAllMathMLPrefs();
// Set first pref to true (dis=1 means mathml.disabled=true)
Preferences::SetBool(kMathMLPrefs[0].pref, true);
ASSERT_TRUE(mozilla::glean_pings::UserCharacteristics.TestSubmission(
[](const nsACString& aReason) {
auto result =
mozilla::glean::characteristics::mathml_diag_prefs_modified
.TestGetValue()
.unwrap()
.value();
ASSERT_STREQ("dis=1", result.get());
},
[]() {
testing::PopulateMathMLPrefs();
mozilla::glean_pings::UserCharacteristics.Submit();
}));
ClearAllMathMLPrefs();
}
TEST(ResistFingerprinting, UserCharacteristics_MathMLPrefs_TwoPrefs)
{
ClearAllMathMLPrefs();
// Set two prefs to non-default values
// mathml.disabled defaults to false, set to true
// mathml.scale_stretchy_operators.enabled defaults to true, set to false
Preferences::SetBool(kMathMLPrefs[0].pref, true); // dis=1
Preferences::SetBool(kMathMLPrefs[1].pref, false); // str=0
ASSERT_TRUE(mozilla::glean_pings::UserCharacteristics.TestSubmission(
[](const nsACString& aReason) {
auto result =
mozilla::glean::characteristics::mathml_diag_prefs_modified
.TestGetValue()
.unwrap()
.value();
// Order matches kMathMLPrefs order
ASSERT_STREQ("dis=1,str=0", result.get());
},
[]() {
testing::PopulateMathMLPrefs();
mozilla::glean_pings::UserCharacteristics.Submit();
}));
ClearAllMathMLPrefs();
}
TEST(ResistFingerprinting, UserCharacteristics_MathMLPrefs_NonAdjacent)
{
ClearAllMathMLPrefs();
// Set non-adjacent prefs: first and fourth
Preferences::SetBool(kMathMLPrefs[0].pref, true); // dis=1
Preferences::SetBool(kMathMLPrefs[3].pref, false); // rtl=0
ASSERT_TRUE(mozilla::glean_pings::UserCharacteristics.TestSubmission(
[](const nsACString& aReason) {
auto result =
mozilla::glean::characteristics::mathml_diag_prefs_modified
.TestGetValue()
.unwrap()
.value();
ASSERT_STREQ("dis=1,rtl=0", result.get());
},
[]() {
testing::PopulateMathMLPrefs();
mozilla::glean_pings::UserCharacteristics.Submit();
}));
ClearAllMathMLPrefs();
}
TEST(ResistFingerprinting, UserCharacteristics_MathMLPrefs_Format)
{
ClearAllMathMLPrefs();
// Set multiple prefs to verify format: shortname=0|1,shortname=0|1,...
Preferences::SetBool(kMathMLPrefs[0].pref, true);
Preferences::SetBool(kMathMLPrefs[1].pref, false);
Preferences::SetBool(kMathMLPrefs[2].pref, true);
ASSERT_TRUE(mozilla::glean_pings::UserCharacteristics.TestSubmission(
[](const nsACString& aReason) {
auto result =
mozilla::glean::characteristics::mathml_diag_prefs_modified
.TestGetValue()
.unwrap()
.value();
// Verify the format is correct
nsCString str(result);
// Should contain commas separating entries
ASSERT_TRUE(str.Find(",") != kNotFound);
// Each entry should be shortname=digit
// Split by comma and verify each part
int32_t start = 0;
int32_t pos;
while ((pos = str.Find(",", start)) != kNotFound ||
start < (int32_t)str.Length()) {
int32_t end = (pos != kNotFound) ? pos : str.Length();
nsCString part;
str.Mid(part, start, end - start);
// Should contain exactly one '='
ASSERT_EQ(1, std::count(part.BeginReading(), part.EndReading(), '='));
// Value after '=' should be '0' or '1'
int32_t eqPos = part.Find("=");
ASSERT_TRUE(eqPos != kNotFound);
char value = part.CharAt(eqPos + 1);
ASSERT_TRUE(value == '0' || value == '1');
start = end + 1;
if (pos == kNotFound) break;
}
},
[]() {
testing::PopulateMathMLPrefs();
mozilla::glean_pings::UserCharacteristics.Submit();
}));
ClearAllMathMLPrefs();
}