cdcf569506
- PEG-based Clojure reader (symbols, keywords, numbers, strings, lists, vectors, maps, sets, quote forms, reader macros, metadata) - Tree-walking evaluator (quote, do, if, def, fn*, let*, loop*/recur, syntax-quote/unquote/unquote-splicing, macro system, ns/require/in-ns) - 95+ clojure.core functions (predicates, math, collections, seq ops, higher-order, atoms, I/O) - Public API (init, eval-string, eval-string*) - REPL (jolt/main.janet) - 7 test suites, all green - MIT license
92 lines
3.2 KiB
Text
92 lines
3.2 KiB
Text
(use ../src/jolt/reader)
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(use ../src/jolt/types)
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(use ../src/jolt/evaluator)
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# Helper: parse and eval in a fresh ctx
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(defn eval-str [s]
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(let [ctx (make-ctx)
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form (parse-string s)]
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(eval-form ctx @{} form)))
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(print "1: in-ns...")
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(let [ctx (make-ctx)]
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(def form (parse-string "(in-ns my.app)"))
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(eval-form ctx @{} form)
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(assert (= "my.app" (ctx-current-ns ctx)) "in-ns switches namespace"))
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(print " passed")
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(print "2: def in different namespace...")
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(let [ctx (make-ctx)]
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(eval-form ctx @{} (parse-string "(in-ns my.app)"))
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(eval-form ctx @{} (parse-string "(def x 42)"))
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(let [ns (ctx-find-ns ctx "my.app")
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v (ns-find ns "x")]
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(assert (= 42 (var-get v)) "def works in new namespace")))
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(print " passed")
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(print "3: ns form...")
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(let [ctx (make-ctx)]
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(eval-form ctx @{} (parse-string "(ns my.lib)"))
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(assert (= "my.lib" (ctx-current-ns ctx)) "ns sets current namespace"))
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(print " passed")
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(print "4: ns with require...")
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(let [ctx (make-ctx)]
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# Set up a namespace with some vars
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(let [other-ns (ctx-find-ns ctx "other.lib")]
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(ns-intern other-ns "f" (fn [x] (inc x))))
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# Now ns with require
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(eval-form ctx @{} (parse-string "(ns my.app (:require [other.lib :as o]))"))
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# current-ns should be my.app
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(assert (= "my.app" (ctx-current-ns ctx)) "ns with require sets current namespace")
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# Alias should be registered
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(let [ns (ctx-find-ns ctx "my.app")
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aliased (ns-import-lookup ns "o")]
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(assert (= "other.lib" aliased) "alias o -> other.lib registered")))
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(print " passed")
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(print "5: require form (standalone)...")
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(let [ctx (make-ctx)]
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(eval-form ctx @{} (parse-string "(require '[other.lib :as o])"))
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(let [ns (ctx-find-ns ctx "user")
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aliased (ns-import-lookup ns "o")]
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(assert (= "other.lib" aliased) "standalone require registers alias")))
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(print " passed")
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(print "6: qualified symbol via alias...")
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(let [ctx (make-ctx)]
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# Set up target ns
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(let [target (ctx-find-ns ctx "other.lib")]
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(ns-intern target "f" (fn [x] (inc x))))
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# Register alias
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(let [ns (ctx-find-ns ctx "user")]
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(ns-import ns "o" "other.lib"))
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# Resolve o/f and call it
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(let [form (parse-string "(o/f 41)")
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result (eval-form ctx @{} form)]
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(assert (= 42 result) "qualified call via alias works")))
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(print " passed")
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(print "7: require then use alias...")
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(let [ctx (make-ctx)]
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# Set up target ns
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(let [target (ctx-find-ns ctx "math.lib")]
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(ns-intern target "add" (fn [a b] (+ a b))))
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# require + use
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(eval-form ctx @{} (parse-string "(require '[math.lib :as m])"))
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(let [result (eval-form ctx @{} (parse-string "(m/add 1 2)"))]
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(assert (= 3 result) "require + alias + call chain works")))
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(print " passed")
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(print "8: ns form requires multiple...")
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(let [ctx (make-ctx)]
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(let [ns1 (ctx-find-ns ctx "a.lib")]
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(ns-intern ns1 "f" (fn [x] (inc x))))
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(let [ns2 (ctx-find-ns ctx "b.lib")]
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(ns-intern ns2 "g" (fn [x] (dec x))))
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(eval-form ctx @{} (parse-string "(ns user (:require [a.lib :as a] [b.lib :as b]))"))
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(assert (= 43 (eval-form ctx @{} (parse-string "(a/f 42)"))) "alias a works")
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(assert (= 41 (eval-form ctx @{} (parse-string "(b/g 42)"))) "alias b works"))
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(print " passed")
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(print "\nAll namespace tests passed!")
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