2 files changed, 1018 insertions, 0 deletions
diff --git a/xpcom/tests/external/TestMinStringAPI.cpp b/xpcom/tests/external/TestMinStringAPI.cpp
new file mode 100644
index 000000000..28bc0b1c1
--- /dev/null
+++ b/xpcom/tests/external/TestMinStringAPI.cpp
@@ -0,0 +1,1009 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 http://mozilla.org/MPL/2.0/. */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "nsStringAPI.h"
+#include "nsXPCOM.h"
+#include "nsMemory.h"
+
+static const char kAsciiData[] = "Hello World";
+
+static const char16_t kUnicodeData[] =
+  {'H','e','l','l','o',' ','W','o','r','l','d','\0'};
+
+static bool test_basic_1()
+  {
+    nsCStringContainer s;
+    NS_CStringContainerInit(s);
+
+    const char *ptr;
+    uint32_t len;
+    char *clone;
+
+    NS_CStringGetData(s, &ptr);
+    if (ptr == nullptr || *ptr != '\0')
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+
+    NS_CStringSetData(s, kAsciiData, UINT32_MAX);
+    len = NS_CStringGetData(s, &ptr);
+    if (ptr == nullptr || strcmp(ptr, kAsciiData) != 0)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+    if (len != sizeof(kAsciiData)-1)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+
+    clone = NS_CStringCloneData(s);
+    if (ptr == nullptr || strcmp(ptr, kAsciiData) != 0)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+    free(clone);
+
+    nsCStringContainer temp;
+    NS_CStringContainerInit(temp);
+    NS_CStringCopy(temp, s);
+
+    len = NS_CStringGetData(temp, &ptr);
+    if (ptr == nullptr || strcmp(ptr, kAsciiData) != 0)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+    if (len != sizeof(kAsciiData)-1)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+
+    NS_CStringContainerFinish(temp);
+
+    NS_CStringContainerFinish(s);
+    return true;
+  }
+
+static bool test_basic_2()
+  {
+    nsStringContainer s;
+    NS_StringContainerInit(s);
+
+    const char16_t *ptr;
+    uint32_t len;
+    char16_t *clone;
+
+    NS_StringGetData(s, &ptr);
+    if (ptr == nullptr || *ptr != '\0')
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+
+    NS_StringSetData(s, kUnicodeData, UINT32_MAX);
+    len = NS_StringGetData(s, &ptr);
+    if (len != sizeof(kUnicodeData)/2 - 1)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+    if (ptr == nullptr || memcmp(ptr, kUnicodeData, sizeof(kUnicodeData)) != 0)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+
+    clone = NS_StringCloneData(s);
+    if (ptr == nullptr || memcmp(ptr, kUnicodeData, sizeof(kUnicodeData)) != 0)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+    free(clone);
+
+    nsStringContainer temp;
+    NS_StringContainerInit(temp);
+    NS_StringCopy(temp, s);
+
+    len = NS_StringGetData(temp, &ptr);
+    if (len != sizeof(kUnicodeData)/2 - 1)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+    if (ptr == nullptr || memcmp(ptr, kUnicodeData, sizeof(kUnicodeData)) != 0)
+      {
+        NS_ERROR("unexpected result");
+        return false;
+      }
+
+    NS_StringContainerFinish(temp);
+
+    NS_StringContainerFinish(s);
+
+    return true;
+  }
+
+static bool test_convert()
+  {
+    nsStringContainer s;
+    NS_StringContainerInit(s);
+    NS_StringSetData(s, kUnicodeData, sizeof(kUnicodeData)/2 - 1);
+
+    nsCStringContainer temp;
+    NS_CStringContainerInit(temp);
+
+    const char *data;
+
+    NS_UTF16ToCString(s, NS_CSTRING_ENCODING_ASCII, temp);
+    NS_CStringGetData(temp, &data);
+    if (strcmp(data, kAsciiData) != 0)
+      return false;
+
+    NS_UTF16ToCString(s, NS_CSTRING_ENCODING_UTF8, temp);
+    NS_CStringGetData(temp, &data);
+    if (strcmp(data, kAsciiData) != 0)
+      return false;
+
+    NS_CStringContainerFinish(temp);
+
+    NS_StringContainerFinish(s);
+    return true;
+  }
+
+static bool test_append()
+  {
+    nsCStringContainer s;
+    NS_CStringContainerInit(s);
+
+    NS_CStringSetData(s, "foo");
+    NS_CStringAppendData(s, "bar");
+
+    NS_CStringContainerFinish(s);
+    return true;
+  }
+
+// Replace all occurrences of |matchVal| with |newVal|
+static void ReplaceSubstring( nsACString& str,
+                              const nsACString& matchVal,
+                              const nsACString& newVal )
+  {
+    const char* sp;
+    const char* mp;
+    const char* np;
+    uint32_t sl = NS_CStringGetData(str, &sp);
+    uint32_t ml = NS_CStringGetData(matchVal, &mp);
+    uint32_t nl = NS_CStringGetData(newVal, &np);
+
+    for (const char* iter = sp; iter <= sp + sl - ml; ++iter)
+      {
+        if (memcmp(iter, mp, ml) == 0)
+          {
+            uint32_t offset = iter - sp;
+
+            NS_CStringSetDataRange(str, offset, ml, np, nl);
+
+            sl = NS_CStringGetData(str, &sp);
+
+            iter = sp + offset + nl - 1;
+          }
+      }
+  }
+
+static bool test_replace_driver(const char *strVal,
+                                  const char *matchVal,
+                                  const char *newVal,
+                                  const char *finalVal)
+  {
+    nsCStringContainer a;
+    NS_CStringContainerInit(a);
+    NS_CStringSetData(a, strVal);
+
+    nsCStringContainer b;
+    NS_CStringContainerInit(b);
+    NS_CStringSetData(b, matchVal);
+
+    nsCStringContainer c;
+    NS_CStringContainerInit(c);
+    NS_CStringSetData(c, newVal);
+
+    ReplaceSubstring(a, b, c);
+
+    const char *data;
+    NS_CStringGetData(a, &data);
+    if (strcmp(data, finalVal) != 0)
+      return false;
+
+    NS_CStringContainerFinish(c);
+    NS_CStringContainerFinish(b);
+    NS_CStringContainerFinish(a);
+    return true;
+  }
+
+static bool test_replace()
+  {
+    bool rv;
+
+    rv = test_replace_driver("hello world, hello again!",
+                             "hello",
+                             "goodbye",
+                             "goodbye world, goodbye again!");
+    if (!rv)
+      return rv;
+
+    rv = test_replace_driver("foofoofoofoo!",
+                             "foo",
+                             "bar",
+                             "barbarbarbar!");
+    if (!rv)
+      return rv;
+
+    rv = test_replace_driver("foo bar systems",
+                             "xyz",
+                             "crazy",
+                             "foo bar systems");
+    if (!rv)
+      return rv;
+
+    rv = test_replace_driver("oh",
+                             "xyz",
+                             "crazy",
+                             "oh");
+    if (!rv)
+      return rv;
+
+    return true;
+  }
+
+static const char* kWhitespace="\f\t\r\n ";
+
+static void
+CompressWhitespace(nsACString &str)
+  {
+    const char *p;
+    int32_t i, len = (int32_t) NS_CStringGetData(str, &p);
+
+    // trim leading whitespace
+
+    for (i=0; i<len; ++i)
+      {
+        if (!strchr(kWhitespace, (char) p[i]))
+          break;
+      }
+
+    if (i>0)
+      {
+        NS_CStringCutData(str, 0, i);
+        len = (int32_t) NS_CStringGetData(str, &p);
+      }
+
+    // trim trailing whitespace
+
+    for (i=len-1; i>=0; --i)
+      {
+        if (!strchr(kWhitespace, (char) p[i]))
+          break;
+      }
+
+    if (++i < len)
+      NS_CStringCutData(str, i, len - i);
+  }
+
+static bool test_compress_ws()
+  {
+    nsCStringContainer s;
+    NS_CStringContainerInit(s);
+    NS_CStringSetData(s, " \thello world\r  \n");
+    CompressWhitespace(s);
+    const char *d;
+    NS_CStringGetData(s, &d);
+    bool rv = !strcmp(d, "hello world");
+    if (!rv)
+      printf("=> \"%s\"\n", d);
+    NS_CStringContainerFinish(s);
+    return rv;
+  }
+
+static bool test_depend()
+  {
+    static const char kData[] = "hello world";
+
+    nsCStringContainer s;
+    NS_ENSURE_SUCCESS(
+        NS_CStringContainerInit2(s, kData, sizeof(kData)-1,
+                                 NS_CSTRING_CONTAINER_INIT_DEPEND),
+        false);
+
+    const char *sd;
+    NS_CStringGetData(s, &sd);
+
+    bool rv = (sd == kData);
+    NS_CStringContainerFinish(s);
+    return rv;
+  }
+
+static bool test_depend_sub()
+  {
+    static const char kData[] = "hello world";
+
+    nsCStringContainer s;
+    NS_ENSURE_SUCCESS(
+        NS_CStringContainerInit2(s, kData, sizeof(kData)-1,
+                                 NS_CSTRING_CONTAINER_INIT_DEPEND |
+                                 NS_CSTRING_CONTAINER_INIT_SUBSTRING),
+        false);
+
+    bool terminated;
+    const char *sd;
+    uint32_t len = NS_CStringGetData(s, &sd, &terminated);
+
+    bool rv = (sd == kData && len == sizeof(kData)-1 && !terminated);
+    NS_CStringContainerFinish(s);
+    return rv;
+  }
+
+static bool test_adopt()
+  {
+    static const char kData[] = "hello world";
+
+    char *data = (char *) nsMemory::Clone(kData, sizeof(kData));
+    if (!data)
+      return false;
+
+    nsCStringContainer s;
+    NS_ENSURE_SUCCESS(
+        NS_CStringContainerInit2(s, data, UINT32_MAX,
+                                 NS_CSTRING_CONTAINER_INIT_ADOPT),
+        false); // leaks data on failure *shrug*
+
+    const char *sd;
+    NS_CStringGetData(s, &sd);
+
+    bool rv = (sd == data);
+    NS_CStringContainerFinish(s);
+    return rv;
+  }
+
+static bool test_adopt_sub()
+  {
+    static const char kData[] = "hello world";
+
+    char *data = (char *) nsMemory::Clone(kData, sizeof(kData)-1);
+    if (!data)
+      return false;
+
+    nsCStringContainer s;
+    NS_ENSURE_SUCCESS(
+        NS_CStringContainerInit2(s, data, sizeof(kData)-1,
+                                 NS_CSTRING_CONTAINER_INIT_ADOPT |
+                                 NS_CSTRING_CONTAINER_INIT_SUBSTRING),
+        false); // leaks data on failure *shrug*
+
+    bool terminated;
+    const char *sd;
+    uint32_t len = NS_CStringGetData(s, &sd, &terminated);
+
+    bool rv = (sd == data && len == sizeof(kData)-1 && !terminated);
+    NS_CStringContainerFinish(s);
+    return rv;
+  }
+
+static bool test_mutation()
+  {
+    nsCStringContainer s;
+    NS_CStringContainerInit(s);
+
+    const char kText[] = "Every good boy does fine.";
+
+    char *buf;
+    uint32_t len = NS_CStringGetMutableData(s, sizeof(kText) - 1, &buf);
+    if (!buf || len != sizeof(kText) - 1)
+      return false;
+    memcpy(buf, kText, sizeof(kText));
+
+    const char *data;
+    NS_CStringGetData(s, &data);
+    if (strcmp(data, kText) != 0)
+      return false;
+
+    uint32_t newLen = len + 1;
+    len = NS_CStringGetMutableData(s, newLen, &buf);
+    if (!buf || len != newLen)
+      return false;
+
+    buf[len - 1] = '.';
+
+    NS_CStringGetData(s, &data);
+    if (strncmp(data, kText, len - 1) != 0 || data[len - 1] != '.')
+      return false;
+
+    NS_CStringContainerFinish(s);
+    return true;
+  }
+
+static bool test_ascii()
+{
+  nsCString testCString;
+  testCString.AppendASCII(kAsciiData);
+  if (!testCString.EqualsLiteral(kAsciiData))
+    return false;
+
+  testCString.AssignASCII(kAsciiData);
+  if (!testCString.LowerCaseEqualsLiteral("hello world"))
+    return false;
+
+  nsString testString;
+  testString.AppendASCII(kAsciiData);
+  if (!testString.EqualsLiteral(kAsciiData))
+    return false;
+
+  testString.AssignASCII(kAsciiData);
+  if (!testString.LowerCaseEqualsLiteral("hello world"))
+    return false;
+
+  return true;
+}
+
+static bool test_chars()
+{
+  nsCString testCString(kAsciiData);
+  if (testCString.First() != 'H')
+    return false;
+  if (testCString.Last() != 'd')
+    return false;
+  testCString.SetCharAt('u', 8);
+  if (!testCString.EqualsASCII("Hello Would"))
+    return false;
+
+  nsString testString(kUnicodeData);
+  if (testString.First() != 'H')
+    return false;
+  if (testString.Last() != 'd')
+    return false;
+  testString.SetCharAt('u', 8);
+  if (!testString.EqualsASCII("Hello Would"))
+    return false;
+
+  return true;
+}
+
+static bool test_stripchars()
+{
+  nsCString test(kAsciiData);
+  test.StripChars("ld");
+  if (!test.EqualsLiteral("Heo Wor"))
+    return false;
+
+  test.Assign(kAsciiData);
+  test.StripWhitespace();
+  if (!test.EqualsLiteral("HelloWorld"))
+    return false;
+
+  return true;
+}
+
+static bool test_trim()
+{
+  static const char kWS[] = "\n\t\r ";
+  static const char kTestString[] = " \n\tTesting...\n\r";
+
+  nsCString test1(kTestString);
+  nsCString test2(kTestString);
+  nsCString test3(kTestString);
+
+  test1.Trim(kWS);
+  test2.Trim(kWS, true, false);
+  test3.Trim(kWS, false, true);
+
+  if (!test1.EqualsLiteral("Testing..."))
+    return false;
+
+  if (!test2.EqualsLiteral("Testing...\n\r"))
+    return false;
+
+  if (!test3.EqualsLiteral(" \n\tTesting..."))
+    return false;
+
+  return true;
+}
+
+static bool test_find()
+{
+  nsString uni(kUnicodeData);
+
+  static const char kHello[] = "Hello";
+  static const char khello[] = "hello";
+  static const char kBye[] = "Bye!";
+
+  int32_t found;
+
+  found = uni.Find(kHello);
+  if (found != 0)
+    return false;
+
+  found = uni.Find(khello, false);
+  if (found != -1)
+    return false;
+ 
+  found = uni.Find(khello, true);
+  if (found != 0)
+    return false;
+
+  found = uni.Find(kBye);
+  if (found != -1)
+    return false;
+
+  found = uni.Find(NS_LITERAL_STRING("World"));
+  if (found != 6)
+    return false;
+
+  found = uni.Find(uni);
+  if (found != 0)
+    return false;
+
+  return true;
+}
+
+static bool test_compressws()
+{
+  nsString check(NS_LITERAL_STRING(" \tTesting  \n\t1\n 2 3\n "));
+  CompressWhitespace(check);
+  return check.EqualsLiteral("Testing 1 2 3");
+}
+
+static bool test_comparisons()
+{
+  bool result;
+
+  // nsString
+
+  NS_NAMED_LITERAL_STRING(shortString1, "Foo");
+  NS_NAMED_LITERAL_STRING(shortString2, "Bar");
+  NS_NAMED_LITERAL_STRING(shortString3, "Bar");
+  NS_NAMED_LITERAL_STRING(shortString4, "bar");
+  NS_NAMED_LITERAL_STRING(longString, "FooBar");
+
+  // ==
+
+  result = (shortString1 == shortString2);
+  if (result)
+    return false;
+
+  result = (shortString2 == shortString3);
+  if (!result)
+    return false;
+
+  result = (shortString3 == shortString4);
+  if (result)
+    return false;
+
+  result = (shortString1 == longString);
+  if (result)
+    return false;
+
+  result = (longString == shortString1);
+  if (result)
+    return false;
+
+  // !=
+
+  result = (shortString1 != shortString2);
+  if (!result)
+    return false;
+
+  result = (shortString2 != shortString3);
+  if (result)
+    return false;
+
+  result = (shortString3 != shortString4);
+  if (!result)
+    return false;
+
+  result = (shortString1 != longString);
+  if (!result)
+    return false;
+
+  result = (longString != shortString1);
+  if (!result)
+    return false;
+
+  // <
+
+  result = (shortString1 < shortString2);
+  if (result)
+    return false;
+
+  result = (shortString2 < shortString1);
+  if (!result)
+    return false;
+
+  result = (shortString1 < longString);
+  if (!result)
+    return false;
+
+  result = (longString < shortString1);
+  if (result)
+    return false;
+
+  result = (shortString2 < shortString3);
+  if (result)
+    return false;
+
+  result = (shortString3 < shortString4);
+  if (!result)
+    return false;
+
+  result = (shortString4 < shortString3);
+  if (result)
+    return false;
+
+  // <=
+
+  result = (shortString1 <= shortString2);
+  if (result)
+    return false;
+
+  result = (shortString2 <= shortString1);
+  if (!result)
+    return false;
+
+  result = (shortString1 <= longString);
+  if (!result)
+    return false;
+
+  result = (longString <= shortString1);
+  if (result)
+    return false;
+
+  result = (shortString2 <= shortString3);
+  if (!result)
+    return false;
+
+  result = (shortString3 <= shortString4);
+  if (!result)
+    return false;
+
+  result = (shortString4 <= shortString3);
+  if (result)
+    return false;
+
+  // >
+
+  result = (shortString1 > shortString2);
+  if (!result)
+    return false;
+
+  result = (shortString2 > shortString1);
+  if (result)
+    return false;
+
+  result = (shortString1 > longString);
+  if (result)
+    return false;
+
+  result = (longString > shortString1);
+  if (!result)
+    return false;
+
+  result = (shortString2 > shortString3);
+  if (result)
+    return false;
+
+  result = (shortString3 > shortString4);
+  if (result)
+    return false;
+
+  result = (shortString4 > shortString3);
+  if (!result)
+    return false;
+
+  // >=
+
+  result = (shortString1 >= shortString2);
+  if (!result)
+    return false;
+
+  result = (shortString2 >= shortString1);
+  if (result)
+    return false;
+
+  result = (shortString1 >= longString);
+  if (result)
+    return false;
+
+  result = (longString >= shortString1);
+  if (!result)
+    return false;
+
+  result = (shortString2 >= shortString3);
+  if (!result)
+    return false;
+
+  result = (shortString3 >= shortString4);
+  if (result)
+    return false;
+
+  result = (shortString4 >= shortString3);
+  if (!result)
+    return false;
+
+  // nsCString
+
+  NS_NAMED_LITERAL_CSTRING(shortCString1, "Foo");
+  NS_NAMED_LITERAL_CSTRING(shortCString2, "Bar");
+  NS_NAMED_LITERAL_CSTRING(shortCString3, "Bar");
+  NS_NAMED_LITERAL_CSTRING(shortCString4, "bar");
+  NS_NAMED_LITERAL_CSTRING(longCString, "FooBar");
+
+  // ==
+
+  result = (shortCString1 == shortCString2);
+  if (result)
+    return false;
+
+  result = (shortCString2 == shortCString3);
+  if (!result)
+    return false;
+
+  result = (shortCString3 == shortCString4);
+  if (result)
+    return false;
+
+  result = (shortCString1 == longCString);
+  if (result)
+    return false;
+
+  result = (longCString == shortCString1);
+  if (result)
+    return false;
+
+  // !=
+
+  result = (shortCString1 != shortCString2);
+  if (!result)
+    return false;
+
+  result = (shortCString2 != shortCString3);
+  if (result)
+    return false;
+
+  result = (shortCString3 != shortCString4);
+  if (!result)
+    return false;
+
+  result = (shortCString1 != longCString);
+  if (!result)
+    return false;
+
+  result = (longCString != shortCString1);
+  if (!result)
+    return false;
+
+  // <
+
+  result = (shortCString1 < shortCString2);
+  if (result)
+    return false;
+
+  result = (shortCString2 < shortCString1);
+  if (!result)
+    return false;
+
+  result = (shortCString1 < longCString);
+  if (!result)
+    return false;
+
+  result = (longCString < shortCString1);
+  if (result)
+    return false;
+
+  result = (shortCString2 < shortCString3);
+  if (result)
+    return false;
+
+  result = (shortCString3 < shortCString4);
+  if (!result)
+    return false;
+
+  result = (shortCString4 < shortCString3);
+  if (result)
+    return false;
+
+  // <=
+
+  result = (shortCString1 <= shortCString2);
+  if (result)
+    return false;
+
+  result = (shortCString2 <= shortCString1);
+  if (!result)
+    return false;
+
+  result = (shortCString1 <= longCString);
+  if (!result)
+    return false;
+
+  result = (longCString <= shortCString1);
+  if (result)
+    return false;
+
+  result = (shortCString2 <= shortCString3);
+  if (!result)
+    return false;
+
+  result = (shortCString3 <= shortCString4);
+  if (!result)
+    return false;
+
+  result = (shortCString4 <= shortCString3);
+  if (result)
+    return false;
+
+  // >
+
+  result = (shortCString1 > shortCString2);
+  if (!result)
+    return false;
+
+  result = (shortCString2 > shortCString1);
+  if (result)
+    return false;
+
+  result = (shortCString1 > longCString);
+  if (result)
+    return false;
+
+  result = (longCString > shortCString1);
+  if (!result)
+    return false;
+
+  result = (shortCString2 > shortCString3);
+  if (result)
+    return false;
+
+  result = (shortCString3 > shortCString4);
+  if (result)
+    return false;
+
+  result = (shortCString4 > shortCString3);
+  if (!result)
+    return false;
+
+  // >=
+
+  result = (shortCString1 >= shortCString2);
+  if (!result)
+    return false;
+
+  result = (shortCString2 >= shortCString1);
+  if (result)
+    return false;
+
+  result = (shortCString1 >= longCString);
+  if (result)
+    return false;
+
+  result = (longCString >= shortCString1);
+  if (!result)
+    return false;
+
+  result = (shortCString2 >= shortCString3);
+  if (!result)
+    return false;
+
+  result = (shortCString3 >= shortCString4);
+  if (result)
+    return false;
+
+  result = (shortCString4 >= shortCString3);
+  if (!result)
+    return false;
+
+  return true;
+}
+
+static bool test_parse_string_helper(const char* str, char separator, int len,
+                                       const char* s1, const char* s2)
+{
+  nsCString data(str);
+  nsTArray<nsCString> results;
+  if (!ParseString(data, separator, results))
+    return false;
+  if (int(results.Length()) != len)
+    return false;
+  const char* strings[] = { s1, s2 };
+  for (int i = 0; i < len; ++i) {
+    if (!results[i].Equals(strings[i]))
+      return false;
+  }
+  return true;
+}
+
+static bool test_parse_string_helper0(const char* str, char separator)
+{
+  return test_parse_string_helper(str, separator, 0, nullptr, nullptr);
+}
+
+static bool test_parse_string_helper1(const char* str, char separator, const char* s1)
+{
+  return test_parse_string_helper(str, separator, 1, s1, nullptr);
+}
+
+static bool test_parse_string_helper2(const char* str, char separator, const char* s1, const char* s2)
+{
+  return test_parse_string_helper(str, separator, 2, s1, s2);
+}
+
+static bool test_parse_string()
+{
+  return test_parse_string_helper1("foo, bar", '_', "foo, bar") &&
+         test_parse_string_helper2("foo, bar", ',', "foo", " bar") &&
+         test_parse_string_helper2("foo, bar ", ' ', "foo,", "bar") &&
+         test_parse_string_helper2("foo,bar", 'o', "f", ",bar") &&
+         test_parse_string_helper0("", '_') &&
+         test_parse_string_helper0("  ", ' ') &&
+         test_parse_string_helper1(" foo", ' ', "foo") &&
+         test_parse_string_helper1("  foo", ' ', "foo");
+}
+
+//----
+
+typedef bool (*TestFunc)();
+
+static const struct Test
+  {
+    const char* name;
+    TestFunc    func;
+  }
+tests[] =
+  {
+    { "test_basic_1", test_basic_1 },
+    { "test_basic_2", test_basic_2 },
+    { "test_convert", test_convert },
+    { "test_append", test_append },
+    { "test_replace", test_replace },
+    { "test_compress_ws", test_compress_ws },
+    { "test_depend", test_depend },
+    { "test_depend_sub", test_depend_sub },
+    { "test_adopt", test_adopt },
+    { "test_adopt_sub", test_adopt_sub },
+    { "test_mutation", test_mutation },
+    { "test_ascii", test_ascii },
+    { "test_chars", test_chars },
+    { "test_stripchars", test_stripchars },
+    { "test_trim", test_trim },
+    { "test_find", test_find },
+    { "test_compressws", test_compressws },
+    { "test_comparisons", test_comparisons },
+    { "test_parse_string", test_parse_string },
+    { nullptr, nullptr }
+  };
+
+//----
+
+int main(int argc, char **argv)
+  {
+    int count = 1;
+    if (argc > 1)
+      count = atoi(argv[1]);
+
+    while (count--)
+      {
+        for (const Test* t = tests; t->name != nullptr; ++t)
+          {
+            printf("%25s : %s\n", t->name, t->func() ? "SUCCESS" : "FAILURE");
+          }
+      }
+    
+    return 0;
+  }
diff --git a/xpcom/tests/external/moz.build b/xpcom/tests/external/moz.build
new file mode 100644
index 000000000..d64560b58
--- /dev/null
+++ b/xpcom/tests/external/moz.build
@@ -0,0 +1,9 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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 http://mozilla.org/MPL/2.0/.
+
+GeckoSimplePrograms([
+    'TestMinStringAPI',
+])