From a872e66d63b05ff79ee9549f285e79912e145f8a Mon Sep 17 00:00:00 2001
From: KKlochko <KKlochko@protonmail.com>
Date: Fri, 1 Dec 2023 18:43:44 +0200
Subject: [PATCH] Refactor the SimpleToken factory to move hash function to
 Sha256Hash.

---
 .../security/hashes/Sha256Hash.java           |  8 ++++++
 .../security/tokens/SimpleToken.java          |  4 ++-
 .../security/hashes/Sha256HashSpec.groovy     | 27 +++++++++++++++++++
 3 files changed, 38 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/space/kklochko/spring_rest_example/security/hashes/Sha256Hash.java
 create mode 100644 src/test/groovy/space/kklochko/spring_rest_example/security/hashes/Sha256HashSpec.groovy

diff --git a/src/main/java/space/kklochko/spring_rest_example/security/hashes/Sha256Hash.java b/src/main/java/space/kklochko/spring_rest_example/security/hashes/Sha256Hash.java
new file mode 100644
index 0000000..689afdc
--- /dev/null
+++ b/src/main/java/space/kklochko/spring_rest_example/security/hashes/Sha256Hash.java
@@ -0,0 +1,8 @@
+package space.kklochko.spring_rest_example.security.hashes;
+
+public class Sha256Hash {
+    public String hashOf(String input) {
+        return org.apache.commons.codec.digest.DigestUtils.sha256Hex(input);
+    }
+}
+
diff --git a/src/main/java/space/kklochko/spring_rest_example/security/tokens/SimpleToken.java b/src/main/java/space/kklochko/spring_rest_example/security/tokens/SimpleToken.java
index 520f9c1..d98fe0a 100644
--- a/src/main/java/space/kklochko/spring_rest_example/security/tokens/SimpleToken.java
+++ b/src/main/java/space/kklochko/spring_rest_example/security/tokens/SimpleToken.java
@@ -1,8 +1,10 @@
 package space.kklochko.spring_rest_example.security.tokens;
 
+import space.kklochko.spring_rest_example.security.hashes.Sha256Hash;
+
 public class SimpleToken extends StringTokenFactory {
     public String create(String input) {
-        return org.apache.commons.codec.digest.DigestUtils.sha256Hex(input);
+        return (new Sha256Hash()).hashOf(input);
     }
 }
 
diff --git a/src/test/groovy/space/kklochko/spring_rest_example/security/hashes/Sha256HashSpec.groovy b/src/test/groovy/space/kklochko/spring_rest_example/security/hashes/Sha256HashSpec.groovy
new file mode 100644
index 0000000..32c1411
--- /dev/null
+++ b/src/test/groovy/space/kklochko/spring_rest_example/security/hashes/Sha256HashSpec.groovy
@@ -0,0 +1,27 @@
+package space.kklochko.spring_rest_example.security.hashes
+
+
+import spock.lang.Specification;
+import spock.lang.Subject;
+
+public class Sha256HashSpec extends Specification {
+    def "Create a token that based on sha256"() {
+        given: "I have a hasher"
+        @Subject
+        def hasher = new Sha256Hash()
+
+        when: "I get a hash of a string"
+        String hash = hasher.hashOf(input)
+
+        then: "The token is the same if the same input data."
+        expectedHash == hash
+
+        where: "I have the expected data"
+        input                  || expectedHash
+        "abc"                  || "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
+        "random numbers232341" || "7f4b80b2b09ae4326f78b1a9782c807af0a7d0194bffb05602a6585466b4c43e"
+        "admin"                || "8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918"
+        "user"                 || "04f8996da763b7a969b1028ee3007569eaf3a635486ddab211d512c85b9df8fb"
+    }
+}
+