Fix get_output_fields when Dict has more than one key

Author: mmiller-max

Project.toml

@@ -1,6 +1,6 @@
 name = "GraphQLClient"
 uuid = "09d831e3-9c21-47a9-bfd8-076871817219"
-version = "0.7.1"
+version = "0.7.2"
 
 [deps]
 HTTP = "cd3eb016-35fb-5094-929b-558a96fad6f3"

src/output_fields.jl

@@ -124,7 +124,7 @@ get_output_str(output::Alias) = "$output,"
 function get_output_str(output::Dict)
     str = ""
     for (key, val) in output
-        str = "$key{"
+        str *= "$key{"
         str *= get_output_str(val)
         str *= "},"
     end

test/output_fields.jl

@@ -148,4 +148,26 @@ end
     client.query_to_type_map[query_name] = "MyRecursiveType"
     @test GraphQLClient.get_all_output_fields_str(client, query_name, []) == "field1,"
     @test_logs (:warn, Regex("Can't query all output fields due to recursion of these object\\(s\\):")) GraphQLClient.get_all_output_fields_str(client, query_name, [])
+end
+
+@testset "issue #7" begin
+    output_fields=[
+        Dict(
+            "level1" =>Dict(
+                "level2" => Dict(
+                    "level3" => Dict(
+                        "level4_1" => [
+                            "level4_1_1",
+                        ],
+                        "level4_2" => [
+                            "level4_2_1",
+                        ],
+                    ) 
+                )
+            )
+        )
+    ]
+    output_str = GraphQLClient.get_output_str(output_fields)
+    @test occursin("level4_1{level4_1_1,}" , output_str)
+    @test occursin("level4_2{level4_2_1,}" , output_str)
 end