tests(argon2) add tests to ensure JIT compilation

.travis.yml

@@ -25,7 +25,9 @@ install:
   - luarocks make
 
 script:
-  -  make lint && busted -v --coverage -o gtest --repeat 3 spec
+  - make lint
+  - busted --exclude-tags=JIT -v --coverage -o gtest --repeat 3 spec
+  - if [ "$LUA" == "luajit 2.1" ]; then busted -v -o gtest --tags JIT fi
 
 after_success:
   - luacov-coveralls -i ./src/argon2.lua

spec/argon2_spec.lua

@@ -233,6 +233,46 @@ describe("verify()", function()
     end)
 end)
 
+describe("#JIT", function()
+
+    local function read_trace(outfile)
+        local f = assert(io.open(outfile, "r"))
+        local t = f:read("*a")
+        f:close()
+        return t
+    end
+
+    it("hash_encoded() JITs", function()
+        local v = require "jit.v"
+        local outfile = os.tmpname()
+        v.on(outfile)
+
+        for _ = 1, 100 do
+            argon2.hash_encoded("password", "somesalt")
+        end
+
+        local trace = read_trace(outfile)
+        assert.matches("argon2_spec%.lua:%d+ loop", trace)
+        assert.not_matches("NYI", trace)
+    end)
+
+    it("verify() JITs", function()
+        local v = require "jit.v"
+        local outfile = os.tmpname()
+        v.on(outfile)
+
+        local hash = assert(argon2.hash_encoded("password", "somesalt"))
+
+        for _ = 1, 100 do
+            argon2.verify(hash, "password")
+        end
+
+        local trace = read_trace(outfile)
+        assert.matches("argon2_spec%.lua:%d+ loop", trace)
+        assert.not_matches("NYI", trace)
+    end)
+end)
+
 --[[
 pending("module settings", function()