Improve Intl.Segmenter coverage

test/intl402/Segmenter/prototype/segment/containing/iswordlike.js

@@ -13,6 +13,7 @@ info: |
      a. Let isWordLike be a Boolean value indicating whether the segment in string is "word-like" according to locale segmenter.[[Locale]].
      b. Perform ! CreateDataPropertyOrThrow(result, "isWordLike", isWordLike).
 
+includes: [compareArray.js]
 features: [Intl.Segmenter]
 ---*/
 
@@ -49,6 +50,7 @@ other_granularities.forEach(
           assert.sameValue("string", typeof result.input, `${msg} input`);
           assert.sameValue(undefined, result.isWordLike,
               `${msg} isWordLike should be undefined`);
+          assert.compareArray(Object.getOwnPropertyNames(result), ["segment", "index", "input"]);
         }
       });
     });

test/intl402/Segmenter/prototype/segment/containing/one-index.js

@@ -36,6 +36,9 @@ const index_to_one = [
     "14.9E-1",
     "14.9e-1",
     true,
+    { toString(){ return "1"; } },
+    { valueOf(){ return 1; } },
+    { [Symbol.toPrimitive](){ return 1; } },
 ];
 
 // Except granularity: "sentence", check the result.segment is " ".

test/intl402/Segmenter/prototype/segment/containing/out-of-bound-index.js

@@ -37,6 +37,9 @@ const index_to_out_of_bound = [
     -Infinity,
     "Infinity",
     "-Infinity",
+    { toString(){ return "-1"; } },
+    { valueOf(){ return input.length; } },
+    { [Symbol.toPrimitive](){ return -1; } },
 ];
 
 granularities.forEach(

test/intl402/Segmenter/prototype/segment/containing/word-iswordlike.js

@@ -13,6 +13,7 @@ info: |
      a. Let isWordLike be a Boolean value indicating whether the segment in string is "word-like" according to locale segmenter.[[Locale]].
      b. Perform ! CreateDataPropertyOrThrow(result, "isWordLike", isWordLike).
 
+includes: [compareArray.js]
 features: [Intl.Segmenter]
 ---*/
 
@@ -48,5 +49,7 @@ inputs.forEach(function(input) {
     assert.sameValue("string", typeof result.input, msg + "input");
     assert.sameValue("boolean", typeof result.isWordLike,
         msg + "isWordLike should be boolean");
+    assert.compareArray(Object.getOwnPropertyNames(result),
+      ["segment", "index", "input", "isWordLike"]);
   }
 });

test/intl402/Segmenter/prototype/segment/containing/zero-index.js

@@ -52,6 +52,9 @@ const index_to_zeros = [
     "-4.9e-1",
     "4.9E-1",
     "-4.9E-1",
+    { toString(){ return "-0.1"; } },
+    { valueOf(){ return 0.1; } },
+    { [Symbol.toPrimitive](){ return -0.1; } },
 ];
 
 granularities.forEach(

test/intl402/Segmenter/prototype/segment/segment-grapheme-iterable.js

@@ -7,6 +7,7 @@ esid: sec-Intl.Segmenter.prototype.segment
 description: Verifies the behavior for the "segment" function of the Segmenter prototype object.
 info: |
     Intl.Segmenter.prototype.segment( string )
+includes: [compareArray.js]
 features: [Intl.Segmenter]
 ---*/
 
@@ -31,12 +32,22 @@ for (const text of [
     ]) {
   let segments = [];
   for (const v of seg.segment(text)) {
-    assert.sameValue(undefined, v.isWordLike);
-    assert.sameValue(false, v.hasOwnProperty("isWordLike"));
     assert.sameValue("string", typeof v.segment);
-    assert(v.segment.length > 0);
+    assert.sameValue(true, v.segment.length > 0, "length > 0");
+
+    assert.sameValue("number", typeof v.index);
+    assert.sameValue(true, v.index >= 0, "index >= 0");
+    assert.sameValue(true, v.index < text.length, "index < input.length");
+
     assert.sameValue("string", typeof v.input);
     assert.sameValue(text, v.input);
+
+    assert.sameValue(undefined, v.isWordLike);
+    assert.sameValue(false, v.hasOwnProperty("isWordLike"));
+
+    assert.sameValue(text.slice(v.index, v.index + v.segment.length), v.segment);
+    assert.compareArray(Object.getOwnPropertyNames(v), ["segment", "index", "input"]);
+
     segments.push(v.segment);
   }
   assert.sameValue(text, segments.join(''));

test/intl402/Segmenter/prototype/segment/segment-sentence-iterable.js

@@ -7,6 +7,7 @@ esid: sec-Intl.Segmenter.prototype.segment
 description: Verifies the behavior for the "segment" function of the Segmenter prototype object.
 info: |
     Intl.Segmenter.prototype.segment( string )
+includes: [compareArray.js]
 features: [Intl.Segmenter]
 ---*/
 
@@ -31,12 +32,22 @@ for (const text of [
     ]) {
   let segments = [];
   for (const v of seg.segment(text)) {
-    assert.sameValue(undefined, v.isWordLike);
-    assert.sameValue(false, v.hasOwnProperty("isWordLike"));
     assert.sameValue("string", typeof v.segment);
-    assert(v.segment.length > 0);
+    assert.sameValue(true, v.segment.length > 0, "length > 0");
+
+    assert.sameValue("number", typeof v.index);
+    assert.sameValue(true, v.index >= 0, "index >= 0");
+    assert.sameValue(true, v.index < text.length, "index < input.length");
+
     assert.sameValue("string", typeof v.input);
     assert.sameValue(text, v.input);
+
+    assert.sameValue(undefined, v.isWordLike);
+    assert.sameValue(false, v.hasOwnProperty("isWordLike"));
+
+    assert.sameValue(text.slice(v.index, v.index + v.segment.length), v.segment);
+    assert.compareArray(Object.getOwnPropertyNames(v), ["segment", "index", "input"]);
+
     segments.push(v.segment);
   }
   assert.sameValue(text, segments.join(''));

test/intl402/Segmenter/prototype/segment/segment-word-iterable.js

@@ -7,6 +7,7 @@ esid: sec-Intl.Segmenter.prototype.segment
 description: Verifies the behavior for the "segment" function of the Segmenter prototype object.
 info: |
     Intl.Segmenter.prototype.segment( string )
+includes: [compareArray.js]
 features: [Intl.Segmenter]
 ---*/
 
@@ -31,12 +32,22 @@ for (const text of [
     ]) {
   let segments = [];
   for (const v of seg.segment(text)) {
-    assert.sameValue("boolean", typeof v.isWordLike);
-    assert.sameValue(true, v.hasOwnProperty("isWordLike"));
     assert.sameValue("string", typeof v.segment);
-    assert(v.segment.length > 0);
+    assert.sameValue(true, v.segment.length > 0, "length > 0");
+
+    assert.sameValue("number", typeof v.index);
+    assert.sameValue(true, v.index >= 0, "index >= 0");
+    assert.sameValue(true, v.index < text.length, "index < input.length");
+
     assert.sameValue("string", typeof v.input);
     assert.sameValue(text, v.input);
+
+    assert.sameValue("boolean", typeof v.isWordLike);
+    assert.sameValue(true, v.hasOwnProperty("isWordLike"));
+
+    assert.sameValue(text.slice(v.index, v.index + v.segment.length), v.segment);
+    assert.compareArray(Object.getOwnPropertyNames(v), ["segment", "index", "input", "isWordLike"]);
+
     segments.push(v.segment);
   }
   assert.sameValue(text, segments.join(''));