Teach version to consider dev string when comparing

Versions now use their dev strings when comparing
themselves to another version. This is currently
just naive alphabetical order so "RC10" < "RC2"

Versions with no dev string are deemed to be more
recent than ones with dev string regardless of the 
content of the dev string.

Author: samaaron

app/server/sonicpi/lib/sonicpi/version.rb

@@ -59,14 +59,24 @@ def <=>(other)
       if ((other.is_a? Version) &&
           (@major < other.major) or
           ((@major == other.major) && (@minor < other.minor)) or
-          ((@major == other.major) && (@minor == other.minor) && (@patch < other.patch)))
-        -1
+          ((@major == other.major) && (@minor == other.minor) && (@patch < other.patch)) or
+          if (@dev && other.dev)
+            ((@major == other.major) && (@minor == other.minor) && (@patch == other.patch) && (@dev.to_s < other.dev.to_s))
+          else
+            ((@major == other.major) && (@minor == other.minor) && (@patch == other.patch) && @dev)
+          end)
+        return -1
       elsif
         ((other.is_a? Version) &&
-        (@major > other.major) or
+          (@major > other.major) or
           ((@major == other.major) && (@minor > other.minor)) or
-          ((@major == other.major) && (@minor == other.minor) && (@patch > other.patch)))
-        return 1
+          ((@major == other.major) && (@minor == other.minor) && (@patch > other.patch)) or
+          if (@dev && other.dev)
+            ((@major == other.major) && (@minor == other.minor) && (@patch == other.patch) && (@dev.to_s > other.dev.to_s))
+          else
+            ((@major == other.major) && (@minor == other.minor) && (@patch == other.patch) && other.dev)
+          end)
+          return 1
       elsif ((other.is_a? Version) &&
           (@major == other.major) &&
           (@minor == other.minor) &&

app/server/sonicpi/test/test_version.rb

@@ -60,6 +60,30 @@ def test_greater_than
       assert_equal(true, v1 > v2)
     end
 
+    def test_greater_than_with_dev
+      v1 = Version.new(2, 1, 1)
+      v2 = Version.new(2, 1, 1, "dev")
+      assert_equal(true, v1 > v2)
+    end
+
+    def test_less_than_with_dev
+      v1 = Version.new(2, 1, 1, "dev")
+      v2 = Version.new(2, 1, 1)
+      assert_equal(true, v1 < v2)
+    end
+
+    def test_less_than_with_both_dev
+      v1 = Version.new(2, 1, 1, "a")
+      v2 = Version.new(2, 1, 1, "b")
+      assert_equal(true, v1 < v2)
+    end
+
+    def test_greater_than_with_both_dev
+      v1 = Version.new(2, 1, 1, "c")
+      v2 = Version.new(2, 1, 1, "a")
+      assert_equal(true, v1 > v2)
+    end
+
     def test_less_than_or_equal_equality
       v1 = Version.new(2, 1, 0, "RC12")
       v2 = Version.new(2, 1, 0, "RC12")