Custom exceptions and testing

.gitignore

@@ -1,3 +1,61 @@
-/out/production/blockchain/
-/.idea/
-/blockchain.iml
+/.idea/.gitignore
+/build/reports/tests/test/css/base-style.css
+/build/classes/java/main/model/Block.class
+/out/production/blockchain_gitea/model/Block.class
+/build/classes/java/main/model/BlockChain.class
+/out/production/blockchain_gitea/model/BlockChain.class
+/blockChain.txt
+/build/classes/java/test/BlockChainTest.class
+/build/reports/tests/test/classes/BlockChainTest.html
+/.gradle/buildOutputCleanup/buildOutputCleanup.lock
+/.gradle/buildOutputCleanup/cache.properties
+/.gradle/checksums/checksums.lock
+/.idea/compiler.xml
+/build/reports/tests/test/packages/default-package.html
+/.gradle/7.1/dependencies-accessors/dependencies-accessors.lock
+/.gradle/7.1/executionHistory/executionHistory.lock
+/.gradle/7.1/fileHashes/fileHashes.lock
+/build/classes/java/main/util/FileManagement.class
+/out/production/blockchain_gitea/util/FileManagement.class
+/.gradle/7.1/dependencies-accessors/gc.properties
+/.gradle/7.1/gc.properties
+/.gradle/vcs-1/gc.properties
+/.idea/gradle.xml
+/gradle/wrapper/gradle-wrapper.jar
+/gradle/wrapper/gradle-wrapper.properties
+/gradlew
+/gradlew.bat
+/build/classes/java/main/util/HashFunction.class
+/out/production/blockchain_gitea/util/HashFunction.class
+/build/reports/tests/test/index.html
+/.idea/sonarlint/issuestore/index.pb
+/.idea/jarRepositories.xml
+/.gradle/7.1/fileChanges/last-build.bin
+/build/classes/java/main/Main.class
+/out/production/blockchain_gitea/Main.class
+/build/classes/java/main/model/Miner.class
+/out/production/blockchain_gitea/model/Miner.class
+/.idea/misc.xml
+/build/classes/java/main/exceptions/NoSelfTransactionException.class
+/build/classes/java/main/exceptions/NotEnoughCoinsException.class
+/out/production/blockchain_gitea/exceptions/NotEnoughCoinsException.class
+/build/test-results/test/binary/output.bin
+/build/test-results/test/binary/output.bin.idx
+/build/tmp/compileJava/previous-compilation-data.bin
+/build/tmp/compileTestJava/previous-compilation-data.bin
+/KeyPair/privateKey
+/.idea/inspectionProfiles/Project_Default.xml
+/KeyPair/publicKey
+/build/reports/tests/test/js/report.js
+/build/test-results/test/binary/results.bin
+/.idea/runConfigurations.xml
+/build/classes/java/main/util/Security.class
+/out/production/blockchain_gitea/util/Security.class
+/build/reports/tests/test/css/style.css
+/build/test-results/test/TEST-BlockChainTest.xml
+/build/classes/java/main/model/Transaction.class
+/out/production/blockchain_gitea/model/Transaction.class
+/build/classes/java/main/util/TransactionsGenerator.class
+/out/production/blockchain_gitea/util/TransactionsGenerator.class
+/.idea/uiDesigner.xml
+/.idea/vcs.xml