Move zip verification to tests.

src/test/kotlin/com/beust/kobalt/VerifyKobaltZip.kt

@@ -0,0 +1,54 @@
+package com.beust.kobalt
+
+import com.beust.kobalt.api.Kobalt
+import com.beust.kobalt.misc.KFiles
+import com.beust.kobalt.misc.log
+import org.testng.annotations.Test
+import java.io.FileInputStream
+import java.util.jar.JarFile
+import java.util.jar.JarInputStream
+
+class VerifyKobaltZipTest : KobaltTest() {
+    @Test
+    fun verifyZipFile() {
+        var success = true
+        var foundKobaltw = false
+        var foundJar = false
+        var foundWrapperJar = false
+
+        val jarFilePath = "kobalt-" + Kobalt.version + ".jar"
+        val zipFilePath = KFiles.joinDir("kobaltBuild", "libs", "kobalt-" + Kobalt.version + ".zip")
+        val zipFile = JarFile(zipFilePath)
+        val stream = JarInputStream(FileInputStream(zipFilePath))
+        var entry = stream.nextEntry
+        while (entry != null) {
+            if (entry.name == "kobaltw") {
+                foundKobaltw = true
+            } else if (entry.name.endsWith(jarFilePath)) {
+                val ins = zipFile.getInputStream(entry)
+                if (ins.available() < 20000000) {
+                    throw KobaltException(jarFilePath + " is too small: " + jarFilePath)
+                }
+                foundJar = true
+            } else if (entry.name.endsWith("kobalt-wrapper.jar")) {
+                foundWrapperJar = true
+            } else {
+                success = false
+            }
+            entry = stream.nextEntry
+        }
+        if (! success) {
+            throw KobaltException("Found unexpected file in $zipFilePath")
+        }
+        if (! foundKobaltw) {
+            throw KobaltException("Couldn't find kobaltw in $zipFilePath")
+        }
+        if (! foundJar) {
+            throw KobaltException("Couldn't find jar in $zipFilePath")
+        }
+        if (! foundWrapperJar) {
+            throw KobaltException("Couldn't find wrapper jar in $zipFilePath")
+        }
+        log(1, "$zipFilePath looks correct")
+    }
+}