fix(longevity): 'to' commit may be computed wrongly for deleted lines (APP-94)

Author: asurkov

src/main/kotlin/app/hashers/CodeLongevity.kt

@@ -221,10 +221,7 @@ class CodeLongevity(private val localRepo: LocalRepo,
                 if (diff.changeType == DiffEntry.ChangeType.DELETE) {
                     val fileLoader = repo.open(oldId)
                     val fileText = RawText(fileLoader.getBytes())
-                    var lines = ArrayList<RevCommitLine>(fileText.size())
-                    for (idx in 0 .. fileText.size() - 1) {
-                        lines.add(RevCommitLine(commit, oldPath, idx))
-                    }
+                    val lines = ArrayList<RevCommitLine>(fileText.size())
                     files.put(oldPath, lines)
                 }
 

src/test/kotlin/test/tests/hashers/CodeLongevityTest.kt

@@ -138,12 +138,10 @@ class CodeLongevityTest : Spek({
                            rev4, fileName, 0,
                            lines4[1])
 
-            /* TODO(alex): the test fails
             assertCodeLine("line2",
                            rev1, fileName, 1,
                            rev3, fileName, 2,
                            lines4[2])
-            */
         }
 
         afterGroup {