Add tests for METADATA

.test/METADATA.jl

@@ -0,0 +1,25 @@
+const url_reg = r"^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?"
+const gh_path_reg_git=r"^/(.*)?/(.*)?.git$"
+
+for (pkg, versions) in Pkg2.Read.available()
+	url = (Pkg2.Read.url(pkg))
+	maxv = sort([keys(versions)...])[end]
+	m=match(url_reg, url)
+	assert (m != null, "Invalid url $url for package $(pkg). Should satisfy $url_reg")
+	host=m.captures[4]
+	assert (host!=nothing , "Invalid url $url for package $(pkg). Cannot extract host")
+    path=m.captures[5]
+    assert (path!=nothing , "Invalid url $url for package $(pkg). Cannot extract path")
+   	scheme=m.captures[2]
+   	assert ( ismatch (r"git", scheme) || ismatch (r"http", scheme), "Invalid url scheme $scheme for package $(pkg). Should be 'git' or 'http[s]'")
+   	if ismatch(r"github\.com", host)
+        m2 = match(gh_path_reg_git, path)
+        assert (m2 != nothing , "Invalid github url pattern $url for package $(pkg). Should satisfy $gh_path_reg_git")
+        user=m2.captures[1]
+        repo=m2.captures[2]
+        sha1_file = "METADATA/$pkg/versions/$(maxv)/sha1"
+        @assert isfile(sha1_file)
+    end
+ end
+
+@assert Pkg2.check_metadata()

.travis.yml

@@ -0,0 +1,16 @@
+language: cpp
+compiler: 
+    - clang
+notifications:
+    email: false
+before_install:
+    - sudo add-apt-repository ppa:staticfloat/julia-deps -y
+    - sudo add-apt-repository ppa:staticfloat/julianightlies -y
+    - sudo apt-get update -qq -y
+    - sudo apt-get install libpcre3-dev julia -y
+    - git config --global user.name "Travis User"
+    - git config --global user.email "[email protected]"
+script:
+    - cd ..
+    - ln -s METADATA.jl METADATA
+    - julia METADATA/.test/METADATA.jl