CORDA-1664: Blob inspector able to display SignedTransaction blobs dumped from a node's db. (#3559)

tools/blobinspector/src/test/kotlin/net/corda/blobinspector/BlobInspectorTest.kt

@@ -0,0 +1,67 @@
+package net.corda.blobinspector
+
+import net.corda.core.identity.CordaX500Name
+import net.corda.core.internal.SignedDataWithCert
+import net.corda.core.node.NetworkParameters
+import net.corda.core.transactions.SignedTransaction
+import net.corda.core.transactions.WireTransaction
+import net.corda.testing.common.internal.checkNotOnClasspath
+import org.apache.commons.io.output.WriterOutputStream
+import org.assertj.core.api.Assertions.assertThat
+import org.junit.Test
+import java.io.PrintStream
+import java.io.StringWriter
+import java.nio.charset.StandardCharsets.UTF_8
+
+class BlobInspectorTest {
+    private val blobInspector = BlobInspector()
+
+    @Test
+    fun `network-parameters file`() {
+        val output = run("network-parameters")
+        assertThat(output)
+                .startsWith(SignedDataWithCert::class.java.name)
+                .contains(NetworkParameters::class.java.name)
+                .contains(CordaX500Name("Notary Service", "Zurich", "CH").toString()) // Name of the notary in the network parameters
+    }
+
+    @Test
+    fun `node-info file`() {
+        checkNotOnClassPath("net.corda.nodeapi.internal.SignedNodeInfo")
+        val output = run("node-info")
+        assertThat(output)
+                .startsWith("net.corda.nodeapi.internal.SignedNodeInfo")
+                .contains(CordaX500Name("BankOfCorda", "New York", "US").toString())
+    }
+
+    @Test
+    fun `WireTransaction with Cash state`() {
+        checkNotOnClassPath("net.corda.finance.contracts.asset.Cash\$State")
+        val output = run("cash-wtx.blob")
+        assertThat(output)
+                .startsWith(WireTransaction::class.java.name)
+                .contains("net.corda.finance.contracts.asset.Cash\$State")
+    }
+
+    @Test
+    fun `SignedTransaction with Cash state taken from node db`() {
+        checkNotOnClassPath("net.corda.finance.contracts.asset.Cash\$State")
+        val output = run("cash-stx-db.blob")
+        assertThat(output)
+                .startsWith(SignedTransaction::class.java.name)
+                .contains("net.corda.finance.contracts.asset.Cash\$State")
+    }
+
+    private fun run(resourceName: String): String {
+        blobInspector.source = javaClass.getResource(resourceName)
+        val writer = StringWriter()
+        blobInspector.run(PrintStream(WriterOutputStream(writer, UTF_8)))
+        val output = writer.toString()
+        println(output)
+        return output
+    }
+
+    private fun checkNotOnClassPath(className: String) {
+        checkNotOnClasspath(className) { "The Blob Inspector does not have this as a dependency." }
+    }
+}