Add mint tests into MinIO repo (#7886)

mint/build/aws-sdk-java/src/LimitedInputStream.java

@@ -0,0 +1,60 @@
+/*
+*  Mint, (C) 2018 Minio, Inc.
+*
+*  Licensed under the Apache License, Version 2.0 (the "License");
+*  you may not use this file except in compliance with the License.
+*  You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+*  Unless required by applicable law or agreed to in writing, software
+*
+*  distributed under the License is distributed on an "AS IS" BASIS,
+*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+*  See the License for the specific language governing permissions and
+*  limitations under the License.
+*/
+
+package io.minio.awssdk.tests;
+
+import java.io.*;
+
+// LimitedInputStream wraps a regular InputStream, calling
+// read() will skip some bytes as configured and will also
+// return only data with configured length
+
+class LimitedInputStream extends InputStream {
+
+    private int skip;
+    private int length;
+    private InputStream is;
+
+    LimitedInputStream(InputStream is, int skip, int length) {
+        this.is = is;
+        this.skip = skip;
+        this.length = length;
+    }
+
+    @Override
+    public int read() throws IOException {
+        int r;
+        while (skip > 0) {
+            r = is.read();
+            if (r < 0) {
+                throw new IOException("stream ended before being able to skip all bytes");
+            }
+            skip--;
+        }
+        if (length == 0) {
+            return -1;
+        }
+        r = is.read();
+        if (r < 0) {
+            throw new IOException("stream ended before being able to read all bytes");
+        }
+        length--;
+        return r;
+    }
+}
+
+