test: add test case for hover for panics for invalid namespaced funct…

…ion expressions

decoder/hover_test.go

@@ -661,6 +661,34 @@ func TestDecoder_HoverAtPos_basic(t *testing.T) {
  }
 }
 
+func TestDecoder_HoverAtPos_nil_expr(t *testing.T) {
+ // 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,
+ },
+ })
+
+ ctx := context.Background()
+ _, err := d.HoverAtPos(ctx, "test.tf", hcl.Pos{Line: 1, Column: 16, Byte: 15})
+
+ if err == nil {
+ t.Fatal("expected error")
+ }
+
+ positionalErr := &PositionalError{}
+ if !errors.As(err, &positionalErr) {
+ t.Fatal("expected PositionalError for invalid expression")
+ }
+}
+
 func TestDecoder_HoverAtPos_URL(t *testing.T) {
  resourceLabelSchema := []*schema.LabelSchema{
  {Name: "type", IsDepKey: true},