Fix getting not enrich blocks (#165)

src/main/kotlin/io/emeraldpay/dshackle/cache/BlocksMemCache.kt

@@ -35,13 +35,12 @@ open class BlocksMemCache(
     }
 
     open fun get(key: BlockId): BlockContainer? {
-        return mapping.getIfPresent(key)
+        return mapping.getIfPresent(key)?.let {
+            return@let if (it.enriched) it else null
+        }
     }
 
     open fun add(block: BlockContainer) {
-//        if (!block.enriched) {
-//            return
-//        }
         mapping.put(block.hash, block)
     }
 

src/test/groovy/io/emeraldpay/dshackle/cache/BlocksMemCacheSpec.groovy

@@ -89,22 +89,22 @@ class BlocksMemCacheSpec extends Specification {
         act1 == null
     }
 
-//    def "Try add not full block and read"() {
-//        setup:
-//        def cache = new BlocksMemCache()
-//        def block = new BlockJson<TransactionRefJson>()
-//        block.number = 100
-//        block.hash = BlockHash.from(hash1)
-//        block.totalDifficulty = BigInteger.ONE
-//        block.timestamp = Instant.now().truncatedTo(ChronoUnit.SECONDS)
-//        block.uncles = []
-//        block.transactions = []
-//
-//        when:
-//        cache.add(BlockContainer.from(block))
-//        def act = cache.read(BlockId.from(hash1)).block()
-//        then:
-//        act == null
-//    }
+    def "Try add not full block and read"() {
+        setup:
+        def cache = new BlocksMemCache()
+        def block = new BlockJson<TransactionRefJson>()
+        block.number = 100
+        block.hash = BlockHash.from(hash1)
+        block.totalDifficulty = BigInteger.ONE
+        block.timestamp = Instant.now().truncatedTo(ChronoUnit.SECONDS)
+        block.uncles = []
+        block.transactions = []
+
+        when:
+        cache.add(BlockContainer.from(block))
+        def act = cache.read(BlockId.from(hash1)).block()
+        then:
+        act == null
+    }
 
 }