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src/test/java/ch/fhnw/kry/DecryptTest.java

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+package ch.fhnw.kry;
+
+import org.junit.jupiter.api.Test;
+
+import static ch.fhnw.kry.Main.CHIFFRE;
+import static ch.fhnw.kry.Main.KEY;
+import static org.junit.jupiter.api.Assertions.*;
+
+class DecryptTest {
+
+    @Test
+    void strToArray() {
+        var decrypt = new Decrypt();
+
+        String input = "00000100110100100000101110111000000000101000111110001110011111110110000001010001010000111010000000010011011001110010101110110000";
+        int[] data = decrypt.strToArray(input);
+
+        assertEquals(8, data.length);
+        assertEquals(0x04D2, data[0]);
+        assertEquals(0x2BB0, data[data.length - 1]);
+    }
+
+    @Test
+    void decrypt() {
+        var decrypt = new Decrypt();
+        String decrypted = decrypt.decrypt(KEY, CHIFFRE);
+    }
+}