Better argument validation for some list methods.

test/list/insert.wren

@@ -1,6 +1,3 @@
-// TODO: What happens if the index isn't an integer?
-// TODO: Out of bounds.
-
 // Add to empty list.
 var a = []
 a.insert(1, 0)

test/list/insert_index_not_int.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.insert("value", 1.5) // expect runtime error: Index must be an integer.

test/list/insert_index_not_num.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.insert("value", "2") // expect runtime error: Index must be a number.

test/list/insert_index_too_large.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.insert("value", 4) // expect runtime error: Index out of bounds.

test/list/insert_index_too_small.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.insert("value", -5) // expect runtime error: Index out of bounds.

test/list/iterate.wren

@@ -0,0 +1,7 @@
+var a = ["one", "two", "three", "four"]
+IO.write(a.iterate(null)) // expect: 0
+IO.write(a.iterate(0)) // expect: 1
+IO.write(a.iterate(1)) // expect: 2
+IO.write(a.iterate(2)) // expect: 3
+IO.write(a.iterate(3)) // expect: false
+IO.write(a.iterate(-1)) // expect: false

test/list/iterate_iterator_not_int.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.iterate(1.5) // expect runtime error: Iterator must be an integer.

test/list/iterate_iterator_not_num.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.iterate("2") // expect runtime error: Iterator must be a number.

test/list/iterator_value.wren

@@ -0,0 +1,5 @@
+var a = ["one", "two", "three", "four"]
+IO.write(a.iteratorValue(0)) // expect: one
+IO.write(a.iteratorValue(1)) // expect: two
+IO.write(a.iteratorValue(2)) // expect: three
+IO.write(a.iteratorValue(3)) // expect: four

test/list/iterator_value_iterator_not_int.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.iteratorValue(1.5) // expect runtime error: Iterator must be an integer.

test/list/iterator_value_iterator_not_num.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.iteratorValue("2") // expect runtime error: Iterator must be a number.

test/list/iterator_value_iterator_too_large.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.iteratorValue(4) // expect runtime error: Iterator out of bounds.

test/list/iterator_value_iterator_too_small.wren

@@ -0,0 +1,2 @@
+var a = [1, 2, 3]
+a.iteratorValue(-5) // expect runtime error: Iterator out of bounds.