1 files changed, 55 insertions, 0 deletions
diff --git a/xpcom/tests/unit/test_versioncomparator.js b/xpcom/tests/unit/test_versioncomparator.js
new file mode 100644
index 0000000000..5744d62721
--- /dev/null
+++ b/xpcom/tests/unit/test_versioncomparator.js
@@ -0,0 +1,55 @@
+// Versions to test listed in ascending order, none can be equal
+var comparisons = [
+  "pre",
+  // A number that is too large to be supported should be normalized to 0.
+  String(0x1f0000000),
+  "0.9",
+  "0.9.1",
+  "1.0pre1",
+  "1.0pre2",
+  "1.0",
+  "1.1pre",
+  "1.1pre1a",
+  "1.1pre1",
+  "1.1pre10a",
+  "1.1pre10",
+  "1.1",
+  "1.1.0.1",
+  "1.1.1",
+  "1.1.*",
+  "1.*",
+  "2.0",
+  "2.1",
+  "3.0.-1",
+  "3.0",
+];
+
+// Every version in this list means the same version number
+var equality = ["1.1pre", "1.1pre0", "1.0+"];
+
+function run_test() {
+  for (var i = 0; i < comparisons.length; i++) {
+    for (var j = 0; j < comparisons.length; j++) {
+      var result = Services.vc.compare(comparisons[i], comparisons[j]);
+      if (i == j) {
+        if (result != 0) {
+          do_throw(comparisons[i] + " should be the same as itself");
+        }
+      } else if (i < j) {
+        if (!(result < 0)) {
+          do_throw(comparisons[i] + " should be less than " + comparisons[j]);
+        }
+      } else if (!(result > 0)) {
+        do_throw(comparisons[i] + " should be greater than " + comparisons[j]);
+      }
+    }
+  }
+
+  for (i = 0; i < equality.length; i++) {
+    for (j = 0; j < equality.length; j++) {
+      if (Services.vc.compare(equality[i], equality[j]) != 0) {
+        do_throw(equality[i] + " should equal " + equality[j]);
+      }
+    }
+  }
+}