diff --git a/t/pmc/resizablefloatarray.t b/t/pmc/resizablefloatarray.t
index 0c17c82bf8..89d1125787 100644
--- a/t/pmc/resizablefloatarray.t
+++ b/t/pmc/resizablefloatarray.t
@@ -16,7 +16,7 @@ out-of-bounds test. Checks INT and PMC keys.
 
 =cut
 
-.const int TESTS = 63
+.const int TESTS = 78
 .const num PRECISION = 1e-6
 
 .sub 'test' :main
@@ -49,6 +49,7 @@ out-of-bounds test. Checks INT and PMC keys.
     check_interface()
     get_iter()
     'clone'()
+    test_sort()
     method_reverse()
 .end
 
@@ -459,6 +460,50 @@ out-of-bounds test. Checks INT and PMC keys.
     nok(0, 'clone made an evil clone')
 .end
 
+.sub test_sort
+    .local pmc array
+    array = new ['ResizableFloatArray'], 4
+    set array[0], 10.2
+    set array[1], 3.0
+    set array[2], 5.85
+    set array[3], -1.7
+    array.'sort'()
+    $N0 = array[0]
+    is($N0, -1.7, 'sort works - 1st element correct')
+    $N1 = array[1]
+    is($N1, 3.0, 'sort works - 2nd element correct')
+    $N2 = array[2]
+    is($N2, 5.85, 'sort works - 3rd element correct')
+    $N3 = array[3]
+    is($N3, 10.2, 'sort works - 4th element correct')
+    push array, 3.5
+    array.'sort'()
+    $N0 = array[0]
+    is($N0, -1.7, 'sort works - 1st element correct after push')
+    $N1 = array[1]
+    is($N1, 3.0, 'sort works - 2nd element correct after push')
+    $N2 = array[2]
+    is($N2, 3.5, 'sort works - 3rd element correct after push')
+    $N3 = array[3]
+    is($N3, 5.85, 'sort works - 4th element correct after push')
+    $N4 = array[4]
+    is($N4, 10.2, 'sort works - 5th element correct after push')
+    unshift array, 7.2
+    array.'sort'()
+    $N0 = array[0]
+    is($N0, -1.7, 'sort works - 1st element correct after unshift')
+    $N1 = array[1]
+    is($N1, 3.0, 'sort works - 2nd element correct after unshift')
+    $N2 = array[2]
+    is($N2, 3.5, 'sort works - 3rd element correct after unshift')
+    $N3 = array[3]
+    is($N3, 5.85, 'sort works - 4th element correct after unshift')
+    $N4 = array[4]
+    is($N4, 7.2, 'sort works - 5th element correct after unshift')
+    $N5 = array[5]
+    is($N5, 10.2, 'sort works - 6th element correct after unshift')
+.end
+
 .sub method_reverse
     .local pmc array
     array = new ['ResizableFloatArray']