test: add test case for completions for panics for invalid namespaced…

… function expressions

decoder/candidates_test.go

@@ -1325,6 +1325,39 @@ resource "random_resource" "test" {
  }
 }
 
+func TestDecoder_CompletionAtPos_nil_expr(t *testing.T) {
+ ctx := context.Background()
+
+ // provider:: is not a traversal expression, so hcl will return a ExprSyntaxError which needs to be handled
+ f, _ := hclsyntax.ParseConfig([]byte(`attr = provider::`), "test.tf", hcl.InitialPos)
+
+ d := testPathDecoder(t, &PathContext{
+ Schema: &schema.BodySchema{
+ Attributes: map[string]*schema.AttributeSchema{
+ "attr": {Constraint: schema.AnyExpression{OfType: cty.DynamicPseudoType}},
+ },
+ },
+ Files: map[string]*hcl.File{
+ "test.tf": f,
+ },
+ })
+
+ pos := hcl.Pos{Line: 1, Column: 18, Byte: 17}
+
+ candidates, err := d.CompletionAtPos(ctx, "test.tf", pos)
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ expectedCandidates := lang.CompleteCandidates([]lang.Candidate{})
+
+ diff := cmp.Diff(expectedCandidates, candidates, ctydebug.CmpOptions)
+ if diff != "" {
+ t.Fatalf("unexpected schema for %s: %s", stringPos(pos), diff)
+ }
+
+}
+
 func TestDecoder_CompletionAtPos_AnyAttribute(t *testing.T) {
  ctx := context.Background()
  providersSchema := &schema.BlockSchema{