port compact function

lang/funcs/collection.go

@@ -176,8 +176,6 @@ var CompactFunc = function.New(&function.Spec{
 		it := args[0].ElementIterator()
 		for it.Next() {
 			_, v := it.Element()
-			fmt.Println("ohai!")
-			fmt.Println(v.AsString())
 			if v.AsString() == "" {
 				continue
 			}
@@ -208,5 +206,5 @@ func CoalesceList(args ...cty.Value) (cty.Value, error) {
 // Compact takes a list of strings and returns a new list
 // with any empty string elements removed.
 func Compact(list cty.Value) (cty.Value, error) {
-	return CoalesceListFunc.Call([]cty.Value{list})
+	return CompactFunc.Call([]cty.Value{list})
 }

lang/funcs/collection_test.go

@@ -339,6 +339,30 @@ func TestCompact(t *testing.T) {
 			}),
 			false,
 		},
+		{
+			cty.ListVal([]cty.Value{
+				cty.StringVal("test"),
+				cty.StringVal("test"),
+				cty.StringVal(""),
+			}),
+			cty.ListVal([]cty.Value{
+				cty.StringVal("test"),
+				cty.StringVal("test"),
+			}),
+			false,
+		},
+		{ // errrors on list of lists
+			cty.ListVal([]cty.Value{
+				cty.ListVal([]cty.Value{
+					cty.StringVal("test"),
+				}),
+				cty.ListVal([]cty.Value{
+					cty.StringVal(""),
+				}),
+			}),
+			cty.NilVal,
+			true,
+		},
 	}
 
 	for _, test := range tests {

lang/functions.go

@@ -44,7 +44,7 @@ func (s *Scope) Functions() map[string]function.Function {
 			"cidrsubnet":   funcs.CidrSubnetFunc,
 			"coalesce":     stdlib.CoalesceFunc,
 			"coalescelist": funcs.CoalesceListFunc,
-			"compact":      unimplFunc, // TODO
+			"compact":      funcs.CompactFunc,
 			"concat":       stdlib.ConcatFunc,
 			"contains":     unimplFunc, // TODO
 			"csvdecode":    stdlib.CSVDecodeFunc,