jolt/test/clojure-stdlib/clojure/data_test/diff.cljc
Dmitri Sotnikov d3194aae59
Compiler research (#10)
adds self-hosted compiler is functionally:
 
- The default compile path is the portable pipeline using jolt.analyzer (Clojure) → host-neutral IR → backend.janet.
- The analyzer is itself Clojure, compiled by jolt for true self-hosting.
- bootstrap-fixpoint passes (stage1 == stage2 == stage3): rebuilding the compiler on its own output.
- clojure.core is now self-hosted in the overlay.
- Stateful forms (defmacro/ns/deftype/defmulti/require/in-ns) are interpreted by design.
2026-06-09 07:30:25 +08:00

149 lines
5.6 KiB
Clojure

(ns clojure.data-test.diff
(:require [clojure.test :refer [deftest is testing]]
;; NOTE (jolt): sequential-diff expectations corrected to match real Clojure —
;; clojure.data pads only to the max differing index (e.g. (diff [1 2 3] [1 9 3])
;; -> a=[nil 2], not [nil 2 nil]). The upstream clojurust fixtures had this wrong.
[clojure.data :refer [diff]]))
;; ── Atoms ────────────────────────────────────────────────────────────────────
(deftest test-diff-equal-atoms
(testing "equal atoms"
(is (= [nil nil :a] (diff :a :a)))
(is (= [nil nil 1] (diff 1 1)))
(is (= [nil nil "hello"] (diff "hello" "hello")))
(is (= [nil nil nil] (diff nil nil)))
(is (= [nil nil true] (diff true true)))))
(deftest test-diff-unequal-atoms
(testing "unequal atoms"
(is (= [:a :b nil] (diff :a :b)))
(is (= [1 2 nil] (diff 1 2)))
(is (= ["a" "b" nil] (diff "a" "b")))
(is (= [nil 1 nil] (diff nil 1)))
(is (= [true false nil] (diff true false)))))
;; ── Maps ─────────────────────────────────────────────────────────────────────
(deftest test-diff-equal-maps
(testing "equal maps"
(is (= [nil nil {:a 1 :b 2}] (diff {:a 1 :b 2} {:a 1 :b 2})))
(is (= [nil nil {}] (diff {} {})))))
(deftest test-diff-maps-only-in-a
(testing "keys only in a"
(let [[a b both] (diff {:a 1 :b 2} {:a 1})]
(is (= {:b 2} a))
(is (nil? b))
(is (= {:a 1} both)))))
(deftest test-diff-maps-only-in-b
(testing "keys only in b"
(let [[a b both] (diff {:a 1} {:a 1 :b 2})]
(is (nil? a))
(is (= {:b 2} b))
(is (= {:a 1} both)))))
(deftest test-diff-maps-different-values
(testing "same keys, different values"
(let [[a b both] (diff {:a 1 :b 2} {:a 1 :b 9})]
(is (= {:b 2} a))
(is (= {:b 9} b))
(is (= {:a 1} both)))))
(deftest test-diff-maps-nested
(testing "nested maps"
(let [[a b both] (diff {:a {:x 1 :y 2}} {:a {:x 1 :z 3}})]
(is (= {:a {:y 2}} a))
(is (= {:a {:z 3}} b))
(is (= {:a {:x 1}} both)))))
(deftest test-diff-maps-disjoint
(testing "completely disjoint maps"
(let [[a b both] (diff {:a 1} {:b 2})]
(is (= {:a 1} a))
(is (= {:b 2} b))
(is (nil? both)))))
;; ── Sets ─────────────────────────────────────────────────────────────────────
(deftest test-diff-equal-sets
(testing "equal sets"
(is (= [nil nil #{1 2 3}] (diff #{1 2 3} #{1 2 3})))
(is (= [nil nil #{}] (diff #{} #{})))))
(deftest test-diff-sets
(testing "overlapping sets"
(let [[a b both] (diff #{1 2 3} #{2 3 4})]
(is (= #{1} a))
(is (= #{4} b))
(is (= #{2 3} both)))))
(deftest test-diff-disjoint-sets
(testing "disjoint sets"
(let [[a b both] (diff #{1 2} #{3 4})]
(is (= #{1 2} a))
(is (= #{3 4} b))
(is (nil? both)))))
;; ── Vectors / Sequential ────────────────────────────────────────────────────
(deftest test-diff-equal-vectors
(testing "equal vectors"
(is (= [nil nil [1 2 3]] (diff [1 2 3] [1 2 3])))
(is (= [nil nil []] (diff [] [])))))
(deftest test-diff-vectors-same-length
(testing "same length, different elements"
(let [[a b both] (diff [1 2 3] [1 9 3])]
(is (= [nil 2] a))
(is (= [nil 9] b))
(is (= [1 nil 3] both)))))
(deftest test-diff-vectors-different-length
(testing "different lengths"
(let [[a b both] (diff [1 2 3] [1 2])]
(is (= [nil nil 3] a))
(is (nil? b))
(is (= [1 2] both)))
(let [[a b both] (diff [1] [1 2 3])]
(is (nil? a))
(is (= [nil 2 3] b))
(is (= [1] both)))))
(deftest test-diff-lists
(testing "lists treated as sequential"
(let [[a b both] (diff '(1 2 3) '(1 9 3))]
(is (= [nil 2] a))
(is (= [nil 9] b))
(is (= [1 nil 3] both)))))
;; ── Mixed types ─────────────────────────────────────────────────────────────
(deftest test-diff-mixed-types
(testing "different partition types treated as atoms"
(is (= [{:a 1} [1 2] nil] (diff {:a 1} [1 2])))
(is (= [#{1} [1] nil] (diff #{1} [1])))
(is (= [1 :a nil] (diff 1 :a)))))
;; ── Nil handling ────────────────────────────────────────────────────────────
(deftest test-diff-nil
(testing "nil vs non-nil"
(is (= [nil 1 nil] (diff nil 1)))
(is (= [1 nil nil] (diff 1 nil)))
(is (= [nil {:a 1} nil] (diff nil {:a 1})))))
;; ── Deeply nested ───────────────────────────────────────────────────────────
(deftest test-diff-deeply-nested
(testing "deeply nested structures"
(let [[a b both] (diff {:a {:b {:c 1}}} {:a {:b {:c 2}}})]
(is (= {:a {:b {:c 1}}} a))
(is (= {:a {:b {:c 2}}} b))
(is (nil? both))))
(testing "deeply nested with shared keys"
(let [[a b both] (diff {:a {:b 1 :c 2}} {:a {:b 1 :c 9}})]
(is (= {:a {:c 2}} a))
(is (= {:a {:c 9}} b))
(is (= {:a {:b 1}} both)))))