1 files changed, 287 insertions, 0 deletions
diff --git a/js/src/tests/non262/Intl/NumberFormat/rounding-mode.js b/js/src/tests/non262/Intl/NumberFormat/rounding-mode.js
new file mode 100644
index 0000000000..e4b85b0172
--- /dev/null
+++ b/js/src/tests/non262/Intl/NumberFormat/rounding-mode.js
@@ -0,0 +1,287 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl")||release_or_beta)
+
+const tests = [
+  // Special values: Zeros and non-finite values.
+  {
+    value: 0,
+    options: {},
+    roundingModes: {
+      ceil: "0",
+      floor: "0",
+      expand: "0",
+      trunc: "0",
+      halfCeil: "0",
+      halfFloor: "0",
+      halfExpand: "0",
+      halfTrunc: "0",
+      halfEven: "0",
+    },
+  },
+  {
+    value: -0,
+    options: {},
+    roundingModes: {
+      ceil: "-0",
+      floor: "-0",
+      expand: "-0",
+      trunc: "-0",
+      halfCeil: "-0",
+      halfFloor: "-0",
+      halfExpand: "-0",
+      halfTrunc: "-0",
+      halfEven: "-0",
+    },
+  },
+  {
+    value: -Infinity,
+    options: {},
+    roundingModes: {
+      ceil: "-∞",
+      floor: "-∞",
+      expand: "-∞",
+      trunc: "-∞",
+      halfCeil: "-∞",
+      halfFloor: "-∞",
+      halfExpand: "-∞",
+      halfTrunc: "-∞",
+      halfEven: "-∞",
+    },
+  },
+  {
+    value: Infinity,
+    options: {},
+    roundingModes: {
+      ceil: "∞",
+      floor: "∞",
+      expand: "∞",
+      trunc: "∞",
+      halfCeil: "∞",
+      halfFloor: "∞",
+      halfExpand: "∞",
+      halfTrunc: "∞",
+      halfEven: "∞",
+    },
+  },
+  {
+    value: NaN,
+    options: {},
+    roundingModes: {
+      ceil: "NaN",
+      floor: "NaN",
+      expand: "NaN",
+      trunc: "NaN",
+      halfCeil: "NaN",
+      halfFloor: "NaN",
+      halfExpand: "NaN",
+      halfTrunc: "NaN",
+      halfEven: "NaN",
+    },
+  },
+
+  // Integer rounding with positive values.
+  {
+    value: 0.4,
+    options: {maximumFractionDigits: 0},
+    roundingModes: {
+      ceil: "1",
+      floor: "0",
+      expand: "1",
+      trunc: "0",
+      halfCeil: "0",
+      halfFloor: "0",
+      halfExpand: "0",
+      halfTrunc: "0",
+      halfEven: "0",
+    },
+  },
+  {
+    value: 0.5,
+    options: {maximumFractionDigits: 0},
+    roundingModes: {
+      ceil: "1",
+      floor: "0",
+      expand: "1",
+      trunc: "0",
+      halfCeil: "1",
+      halfFloor: "0",
+      halfExpand: "1",
+      halfTrunc: "0",
+      halfEven: "0",
+    },
+  },
+  {
+    value: 0.6,
+    options: {maximumFractionDigits: 0},
+    roundingModes: {
+      ceil: "1",
+      floor: "0",
+      expand: "1",
+      trunc: "0",
+      halfCeil: "1",
+      halfFloor: "1",
+      halfExpand: "1",
+      halfTrunc: "1",
+      halfEven: "1",
+    },
+  },
+
+  // Integer rounding with negative values.
+  {
+    value: -0.4,
+    options: {maximumFractionDigits: 0},
+    roundingModes: {
+      ceil: "-0",
+      floor: "-1",
+      expand: "-1",
+      trunc: "-0",
+      halfCeil: "-0",
+      halfFloor: "-0",
+      halfExpand: "-0",
+      halfTrunc: "-0",
+      halfEven: "-0",
+    },
+  },
+  {
+    value: -0.5,
+    options: {maximumFractionDigits: 0},
+    roundingModes: {
+      ceil: "-0",
+      floor: "-1",
+      expand: "-1",
+      trunc: "-0",
+      halfCeil: "-0",
+      halfFloor: "-1",
+      halfExpand: "-1",
+      halfTrunc: "-0",
+      halfEven: "-0",
+    },
+  },
+  {
+    value: -0.6,
+    options: {maximumFractionDigits: 0},
+    roundingModes: {
+      ceil: "-0",
+      floor: "-1",
+      expand: "-1",
+      trunc: "-0",
+      halfCeil: "-1",
+      halfFloor: "-1",
+      halfExpand: "-1",
+      halfTrunc: "-1",
+      halfEven: "-1",
+    },
+  },
+
+  // Fractional digits rounding with positive values.
+  {
+    value: 0.04,
+    options: {maximumFractionDigits: 1},
+    roundingModes: {
+      ceil: "0.1",
+      floor: "0",
+      expand: "0.1",
+      trunc: "0",
+      halfCeil: "0",
+      halfFloor: "0",
+      halfExpand: "0",
+      halfTrunc: "0",
+      halfEven: "0",
+    },
+  },
+  {
+    value: 0.05,
+    options: {maximumFractionDigits: 1},
+    roundingModes: {
+      ceil: "0.1",
+      floor: "0",
+      expand: "0.1",
+      trunc: "0",
+      halfCeil: "0.1",
+      halfFloor: "0",
+      halfExpand: "0.1",
+      halfTrunc: "0",
+      halfEven: "0",
+    },
+  },
+  {
+    value: 0.06,
+    options: {maximumFractionDigits: 1},
+    roundingModes: {
+      ceil: "0.1",
+      floor: "0",
+      expand: "0.1",
+      trunc: "0",
+      halfCeil: "0.1",
+      halfFloor: "0.1",
+      halfExpand: "0.1",
+      halfTrunc: "0.1",
+      halfEven: "0.1",
+    },
+  },
+
+  // Fractional digits rounding with negative values.
+  {
+    value: -0.04,
+    options: {maximumFractionDigits: 1},
+    roundingModes: {
+      ceil: "-0",
+      floor: "-0.1",
+      expand: "-0.1",
+      trunc: "-0",
+      halfCeil: "-0",
+      halfFloor: "-0",
+      halfExpand: "-0",
+      halfTrunc: "-0",
+      halfEven: "-0",
+    },
+  },
+  {
+    value: -0.05,
+    options: {maximumFractionDigits: 1},
+    roundingModes: {
+      ceil: "-0",
+      floor: "-0.1",
+      expand: "-0.1",
+      trunc: "-0",
+      halfCeil: "-0",
+      halfFloor: "-0.1",
+      halfExpand: "-0.1",
+      halfTrunc: "-0",
+      halfEven: "-0",
+    },
+  },
+  {
+    value: -0.06,
+    options: {maximumFractionDigits: 1},
+    roundingModes: {
+      ceil: "-0",
+      floor: "-0.1",
+      expand: "-0.1",
+      trunc: "-0",
+      halfCeil: "-0.1",
+      halfFloor: "-0.1",
+      halfExpand: "-0.1",
+      halfTrunc: "-0.1",
+      halfEven: "-0.1",
+    },
+  },
+];
+
+for (let {value, options, roundingModes} of tests) {
+  for (let [roundingMode, expected] of Object.entries(roundingModes)) {
+    let nf = new Intl.NumberFormat("en", {...options, roundingMode});
+    assertEq(nf.format(value), expected, `value=${value}, roundingMode=${roundingMode}`);
+    assertEq(nf.resolvedOptions().roundingMode, roundingMode);
+  }
+}
+
+// Default value is "halfExpand".
+assertEq(new Intl.NumberFormat().resolvedOptions().roundingMode, "halfExpand");
+
+// Invalid values.
+for (let roundingMode of ["", null, "halfOdd", "halfUp", "Up", "up"]){
+  assertThrowsInstanceOf(() => new Intl.NumberFormat("en", {roundingMode}), RangeError);
+}
+
+if (typeof reportCompare === "function")
+  reportCompare(true, true);