More negative zero tests.

d3 · Nov 6, 2015 · 31842a1 · 31842a1
1 parent 74f1cd9
commit 31842a1
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/test/format-type-x-test.js b/test/format-type-x-test.js
@@ -50,6 +50,12 @@ tape("format(\"x\") rounds non-integers", function(test) {
   test.end();
 });
 
+tape("format(\"x\") can format negative zero as zero", function(test) {
+  test.equal(format.format("x")(-0), "0");
+  test.equal(format.format("x")(-1e-12), "0");
+  test.end();
+});
+
 tape("format(\"x\") does not consider -0xeee to be positive", function(test) {
   test.equal(format.format("x")(-0xeee), "-eee");
   test.end();
@@ -65,6 +71,12 @@ tape("format(\"#X\") returns the expected hexadecimal (uppercase) string with pr
   test.end();
 });
 
+tape("format(\"X\") can format negative zero as zero", function(test) {
+  test.equal(format.format("X")(-0), "0");
+  test.equal(format.format("X")(-1e-12), "0");
+  test.end();
+});
+
 tape("format(\"X\") does not consider -0xeee to be positive", function(test) {
   test.equal(format.format("X")(-0xeee), "-EEE");
   test.end();