cleaning test

Author: CarloMariaProietti

core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt

@@ -427,18 +427,12 @@ class CreateDataFrameTests {
 
     @Test
     fun `should convert iterables of maps representing rows to DataFrame with value column`() {
-        val maps: Iterable<Map<String, *>> = listOf(mapOf("a" to 1, "b" to true), mapOf("c" to 2, "d" to false))
+        val maps: Iterable<Map<String, *>> = listOf(mapOf("a" to 1, "b" to true), mapOf("c" to 2, "d" to false),)
         val df = maps.toDataFrame()
         df["a"][0] shouldBe 1
         df["b"][0] shouldBe true
-        df["a"][1] shouldBe null
-        df["b"][1] shouldBe null
-        df["c"][0] shouldBe null
-        df["d"][0] shouldBe null
         df["c"][1] shouldBe 2
         df["d"][1] shouldBe false
-        df.columnsCount() shouldBe 4
-        df.rowsCount() shouldBe 2
     }
 
     class NoPublicPropsClass(private val a: Int, private val b: String)