Created
May 2, 2024 02:51
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Repro of my issues with Pathom 3 nested data structures
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| (ns repro | |
| (:require | |
| [clojure.test :refer [deftest is testing]] | |
| [com.wsscode.pathom3.connect.built-in.resolvers :as pbir] | |
| [com.wsscode.pathom3.connect.indexes :as pci] | |
| [com.wsscode.pathom3.connect.operation :as pco] | |
| [com.wsscode.pathom3.interface.eql :as p.eql])) | |
| (deftest more-input-more-problems | |
| (let [map-data {123 {:data/name "Alice"} | |
| 456 {:data/name "Bob"} | |
| 789 {:data/name "Carol"}} | |
| map-guts {::pco/op-name `big-map | |
| ::pco/output [::big-map] | |
| ::pco/resolve (fn [_env _input] {::big-map map-data})} | |
| map-no-input (pco/resolver map-guts) | |
| map-input (-> map-guts | |
| (assoc ::pco/input [::problem-input]) | |
| pco/resolver) | |
| ;; Attribute table resolver to break down the big map. | |
| atr (pbir/attribute-table-resolver | |
| ::big-map :data/id [:data/id :data/name]) | |
| ;; Just the odd IDs - 123 and 789. | |
| customers (pco/resolver | |
| `customers | |
| {::pco/input [::big-map] | |
| ::pco/output [::customers]} | |
| (fn [_env {m ::big-map}] | |
| {::customers (for [id (keys m) | |
| :when (odd? id)] | |
| {:data/id id})})) | |
| no-input (pci/register [map-no-input customers atr]) | |
| input (pci/register [map-input customers atr]) | |
| magic (pci/register [map-input customers atr | |
| (pbir/constantly-resolver ::problem-input 1)])] | |
| (testing "top-level things work" | |
| (testing "without an input" | |
| (is (= {::big-map map-data} | |
| (p.eql/process no-input [::big-map]))) | |
| (is (= {:data/name "Alice"} | |
| (p.eql/process no-input {:data/id 123} [:data/name])))) | |
| (testing "with an input" | |
| (is (= {::big-map map-data} | |
| (p.eql/process input {::problem-input 1} [::big-map]))) | |
| (is (= {:data/name "Alice"} | |
| (p.eql/process | |
| input | |
| {::problem-input 1, :data/id 123} | |
| [:data/name])))) | |
| (testing "magic too" | |
| (is (= {::big-map map-data} | |
| (p.eql/process magic [::big-map]))) | |
| (is (= {:data/name "Alice"} | |
| (p.eql/process magic {:data/id 123} [:data/name]))))) | |
| (testing "nested query" | |
| (testing "works without an input" | |
| (is (= {::customers [{:data/name "Alice"} {:data/name "Carol"}]} | |
| (p.eql/process no-input [{::customers [:data/name]}])))) | |
| (testing "fails to plan with an input" | |
| (is (thrown-with-msg? | |
| Exception #"Pathom can't find a path for the following elements" | |
| (p.eql/process input {::problem-input 1} [{::customers [:data/name]}])))) | |
| (testing "weirdly it works with constantly-resolver and I don't know why" | |
| (is (= {::customers [{:data/name "Alice"} {:data/name "Carol"}]} | |
| (p.eql/process magic [{::customers [:data/name]}]))))))) |
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