TDEPS-238 & TDEPS-239

* Validate deps.edn with existing spec
* Empty deps.edn is valid
* Added tests

src/main/clojure/clojure/tools/deps.clj

@@ -10,12 +10,14 @@
   (:require
     [clojure.java.io :as jio]
     [clojure.set :as set]
+    [clojure.spec.alpha :as s]
     [clojure.string :as str]
     [clojure.tools.deps.util.concurrent :as concurrent]
     [clojure.tools.deps.util.dir :as dir]
     [clojure.tools.deps.util.io :as io]
     [clojure.tools.deps.util.session :as session]
     [clojure.tools.deps.extensions :as ext]
+    [clojure.tools.deps.specs :as specs]
     [clojure.walk :as walk])
   (:import
     [clojure.lang EdnReader$ReaderException]
@@ -34,6 +36,9 @@
   (let [path (.getAbsolutePath f)]
     (ex-info (format fmt path) {:path path})))
 
+(defn valid-deps? [m]
+  (s/valid? ::specs/deps-map m))
+
 (defn- slurp-edn-map
   "Read the file specified by the path-segments, slurp it, and read it as edn."
   [^File f]
@@ -43,9 +48,9 @@
                    (if (str/starts-with? (.getMessage t) "EOF while reading")
                      (throw (io-err "Error reading edn, delimiter unmatched (%s)" f))
                      (throw (io-err (str "Error reading edn. " (.getMessage t) " (%s)") f)))))]
-    (if (map? val)
+    (if (valid-deps? val)
       val
-      (throw (io-err "Expected edn map in: %s" f)))))
+      (throw (io-err "%s is not valid." f)))))
 
 ;; all this canonicalization is deprecated and will eventually be removed
 

src/main/clojure/clojure/tools/deps/specs.clj

@@ -87,9 +87,9 @@
 (s/def ::paths :aliased/paths)
 (s/def ::deps (s/map-of ::lib ::coord))
 (s/def ::aliases (s/map-of ::alias any?))
-(s/def ::deps-map (s/keys
-                    :opt-un [::paths ::deps ::aliases]
-                    :opt [:mvn/repos :mvn/local-repo :tools/usage :deps/prep-lib]))
+(s/def ::deps-map (s/nilable (s/keys
+                               :opt-un [::paths ::deps ::aliases]
+                               :opt [:mvn/repos :mvn/local-repo :tools/usage :deps/prep-lib])))
 
 ;; lib map
 ;;   a map of lib to resolved coordinate (a coord with a ::path) and dependent info

src/test/clojure/clojure/tools/deps/test_deps.clj

@@ -295,6 +295,18 @@
       (let [b (deps/create-basis {:user nil :project adeps})]
         (is (contains? (:classpath b) (.getAbsolutePath (jio/file bdir "src"))))))))
 
+(deftest empty-nil-deps-is-valid
+  (testing "file exists but is empty (nil)"
+    (is (deps/valid-deps? nil))))
+
+(deftest TDEPS-238
+  (testing "deps are invalid with extra nested vector in :exclusions"
+    (let [invalid {:deps
+                   {'org.clojure/core.memoize
+                    {:mvn/version "1.0.257"
+                     :exclusions [['org.clojure/data.priority-map]]}}}]
+      (is (not (deps/valid-deps? invalid))))))
+
 (comment
   (test-local-root-relative-to-project-deps)
   )