Implement addAll functions for JsonArrayBuilder (#2156)

Fixes #2127

1 files changed, 101 insertions, 0 deletions

diff --git a/formats/json-tests/commonTest/src/kotlinx/serialization/json/JsonBuildersTest.kt b/formats/json-tests/commonTest/src/kotlinx/serialization/json/JsonBuildersTest.kt
index 9e4e5722..c2dab089 100644
--- a/formats/json-tests/commonTest/src/kotlinx/serialization/json/JsonBuildersTest.kt
+++ b/formats/json-tests/commonTest/src/kotlinx/serialization/json/JsonBuildersTest.kt
@@ -43,4 +43,105 @@ class JsonBuildersTest {
         }
         assertEquals("""[true,[1,2,3,4,5,6,7,8,9,10],null,{"stringKey":"stringValue"}]""", json.toString())
     }
+
+    @Test
+    fun testBuildJsonArrayAddAll() {
+        assertEquals(
+            """[1,2,3,4,5,null]""",
+            buildJsonArray {
+                assertTrue { addAll(listOf(1, 2, 3, 4, 5, null)) }
+            }.toString()
+        )
+
+        assertEquals(
+            """["a","b","c",null]""",
+            buildJsonArray {
+                assertTrue { addAll(listOf("a", "b", "c", null)) }
+            }.toString()
+        )
+
+        assertEquals(
+            """[true,false,null]""",
+            buildJsonArray {
+                assertTrue { addAll(listOf(true, false, null)) }
+            }.toString()
+        )
+
+        assertEquals(
+            """[2,"b",true,null]""",
+            buildJsonArray {
+                assertTrue {
+                    addAll(
+                        listOf(
+                            JsonPrimitive(2),
+                            JsonPrimitive("b"),
+                            JsonPrimitive(true),
+                            JsonNull,
+                        )
+                    )
+                }
+            }.toString()
+        )
+
+        assertEquals(
+            """[{},{},{},null]""",
+            buildJsonArray {
+                assertTrue {
+                    addAll(
+                        listOf(
+                            JsonObject(emptyMap()),
+                            JsonObject(emptyMap()),
+                            JsonObject(emptyMap()),
+                            JsonNull
+                        )
+                    )
+                }
+            }.toString()
+        )
+
+        assertEquals(
+            """[[],[],[],null]""",
+            buildJsonArray {
+                assertTrue {
+                    addAll(
+                        listOf(
+                            JsonArray(emptyList()),
+                            JsonArray(emptyList()),
+                            JsonArray(emptyList()),
+                            JsonNull
+                        )
+                    )
+                }
+            }.toString()
+        )
+
+        assertEquals(
+            """[null,null]""",
+            buildJsonArray {
+                assertTrue {
+                    addAll(listOf(JsonNull, JsonNull))
+                }
+            }.toString()
+        )
+    }
+
+    @Test
+    fun testBuildJsonArrayAddAllNotModified() {
+        assertEquals(
+            """[]""",
+            buildJsonArray {
+                // add collections
+                assertFalse { addAll(listOf<Number>()) }
+                assertFalse { addAll(listOf<String>()) }
+                assertFalse { addAll(listOf<Boolean>()) }
+
+                // add json elements
+                assertFalse { addAll(listOf()) }
+                assertFalse { addAll(listOf<JsonNull>()) }
+                assertFalse { addAll(listOf<JsonObject>()) }
+                assertFalse { addAll(listOf<JsonArray>()) }
+                assertFalse { addAll(listOf<JsonPrimitive>()) }
+            }.toString()
+        )
+    }
 }