a2805c4f51
Foundation for the linking-mode work (jolt-5ed). Every var cell carries a :gen that bumps on bind-root / var-set(root) / alter-var-root — i.e. on redefinition. Behavior-neutral on its own; it's the substrate the upcoming work needs: direct-linked (sealed) call sites can detect staleness, and redefinition-aware dispatch caches can invalidate per-var (only a redefined var's callers miss, not a global flush). Full suite green, conformance 218/218 in all three modes.
133 lines
4.6 KiB
Text
133 lines
4.6 KiB
Text
(use ../../src/jolt/types)
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# ============================================================
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# Var tests
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# ============================================================
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# make-var
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(let [v (make-var 'x 42)]
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(assert (var? v) "var? returns true")
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(assert (= 42 (var-get v)) "var-get returns root binding")
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(assert (deep= {:name 'x} (var-meta v)) "var-meta returns metadata")
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(assert (deep= 'x (var-name v)) "var-name returns name symbol"))
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# var without init value
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(let [v (make-var 'y)]
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(assert (var? v) "unbound var is still a var"))
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# dynamic var
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(let [v (make-var '*dyn* 1 {:dynamic true})]
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(assert (var-dynamic? v) "var-dynamic? true")
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(assert (not (var-macro? v)) "var-macro? false for dynamic var"))
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# macro var
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(let [v (make-var 'when nil {:macro true})]
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(assert (var-macro? v) "var-macro? true"))
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# var-set — set root binding
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(let [v (make-var 'x 1)]
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(var-set v 99)
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(assert (= 99 (var-get v)) "var-set changes root binding"))
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# alter-var-root
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(let [v (make-var 'c 0)]
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(alter-var-root v inc)
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(assert (= 1 (var-get v)) "alter-var-root applies fn"))
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# with-meta — returns new var with updated meta
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(let [v (make-var 'x 42)
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v2 (with-meta v {:private true})]
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(assert (deep= {:name 'x :private true} (var-meta v2)) "with-meta merges meta")
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(assert (= 42 (var-get v2)) "with-meta preserves root binding"))
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# generation counter — bumps on every root change (substrate for direct-link
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# staleness detection and redefinition-aware dispatch caches)
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(let [v (make-var 'g 1)]
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(assert (= 0 (v :gen)) "fresh var starts at generation 0")
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(bind-root v 2)
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(assert (= 1 (v :gen)) "bind-root bumps generation")
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(var-set v 3)
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(assert (= 2 (v :gen)) "var-set (root) bumps generation")
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(alter-var-root v inc)
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(assert (= 3 (v :gen)) "alter-var-root bumps generation")
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(assert (= 4 (var-get v)) "value still tracks through gen bumps"))
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(let [v (make-var 'g 1)
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v2 (with-meta v {:doc "x"})]
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(assert (= (v :gen) (v2 :gen)) "with-meta carries generation"))
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# var with namespace
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(let [ns (make-ns 'my.ns)
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v (make-var 'my.ns/x 1 {:ns ns})]
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(assert (= ns (var-ns v)) "var-ns returns namespace"))
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# ============================================================
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# Namespace tests
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# ============================================================
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(let [ns (make-ns 'foo.bar)]
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(assert (ns? ns) "ns? returns true")
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(assert (deep= 'foo.bar (ns-name ns)) "ns-name returns name symbol")
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(assert (table? (ns-map ns)) "ns-map returns table")
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(assert (= 0 (length (ns-map ns))) "empty namespace has no mappings"))
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# ns-intern
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(let [ns (make-ns 'test.ns)
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v (ns-intern ns 'x 42)]
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(assert (var? v) "ns-intern returns a var")
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(assert (= 42 (var-get v)) "ns-intern sets root binding")
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# check ns-find returns the same var (by reference, not deep=)
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(assert (= v (ns-find ns 'x)) "ns-find returns interned var"))
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# ns-intern without value
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(let [ns (make-ns 'test.ns)
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v (ns-intern ns 'y)]
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(assert (var? v) "ns-intern without value creates unbound var"))
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# ns-unmap
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(let [ns (make-ns 'test.ns)
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_ (ns-intern ns 'x 1)
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_ (ns-unmap ns 'x)]
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(assert (nil? (ns-find ns 'x)) "ns-unmap removes mapping"))
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# ns-resolve — own ns
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(let [ns (make-ns 'test.ns)
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v (ns-intern ns 'x 10)]
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(assert (= v (ns-resolve ns 'x)) "ns-resolve finds var in own ns"))
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# ns-import
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(let [ns (make-ns 'test.ns)]
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(ns-import ns 'Date 'java.util.Date)
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(assert (= 'java.util.Date (ns-import-lookup ns 'Date)) "ns-import-lookup returns import"))
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# ============================================================
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# Context tests
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# ============================================================
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(let [ctx (make-ctx)]
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(assert (ctx? ctx) "ctx? returns true"))
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# ctx with initial namespaces
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(let [ctx (make-ctx {:namespaces {"user" {"x" 1 "y" 2}}})]
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(let [ns (ctx-find-ns ctx "user")]
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(assert (ns? ns) "ctx-find-ns returns namespace for user")
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(let [v (ns-find ns "x")]
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(assert (var? v) "user/x is a var")
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(assert (= 1 (var-get v)) "user/x has correct value"))))
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# ctx-find-ns creates ns if not present
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(let [ctx (make-ctx)
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ns (ctx-find-ns ctx "foo")]
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(assert (ns? ns) "ctx-find-ns creates namespace on demand"))
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# ============================================================
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# Dynamic binding support (thread-local bindings table)
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# ============================================================
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# push-thread-bindings / pop-thread-bindings
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(let [v (make-var '*dyn* 0 {:dynamic true})]
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(push-thread-bindings @{v 100})
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(assert (= 100 (var-get v)) "push-thread-bindings sets binding")
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(pop-thread-bindings)
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(assert (= 0 (var-get v)) "pop-thread-bindings restores root"))
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(print "All types tests passed!")
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