test: add test case for semantic tokens for panics for invalid namesp…

…aced function expressions

decoder/semantic_tokens_test.go

@@ -320,6 +320,54 @@ resource "vault_auth_backend" "blah" {
  }
 }
 
+func TestDecoder_SemanticTokensInFile_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()
+
+ tokens, err := d.SemanticTokensInFile(ctx, "test.tf")
+ if err != nil {
+ t.Fatal(err)
+ }
+
+ expectedTokens := []lang.SemanticToken{
+ {
+ Type: "hcl-attrName",
+ Modifiers: lang.SemanticTokenModifiers{},
+ Range: hcl.Range{
+ Filename: "test.tf",
+ Start: hcl.Pos{
+ Line: 1,
+ Column: 1,
+ Byte: 0,
+ },
+ End: hcl.Pos{
+ Line: 1,
+ Column: 5,
+ Byte: 4,
+ },
+ },
+ },
+ }
+
+ diff := cmp.Diff(expectedTokens, tokens)
+ if diff != "" {
+ t.Fatalf("unexpected tokens: %s", diff)
+ }
+}
+
 func TestDecoder_SemanticTokensInFile_dependentSchema(t *testing.T) {
  bodySchema := &schema.BodySchema{
  Blocks: map[string]*schema.BlockSchema{