Add test for #131

Author: koperagen

core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataFrameTests.kt

@@ -1752,6 +1752,17 @@ class DataFrameTests : BaseTest() {
         res.nrow shouldBe typed.nrow + 2
     }
 
+    @Test
+    fun `append wrong number of arguments`() {
+        shouldThrow<IllegalStateException> {
+            dataFrameOf("name", "age")(
+                "Alice", 15,
+                "Bob", 20
+            )
+                .append("John")
+        }
+    }
+
     @Test
     fun `first last`() {
         typed.first() shouldBe typed[0]