Lint project following latest RuboCop rules.

Rakefile

@@ -18,7 +18,7 @@ task :test_swift do
   config_file = File.absolute_path("spec/fixtures/swift-tests.yml")
   dotenv_file = File.absolute_path("spec/fixtures/.env.fruitloops")
   with_temp_dir do |temp_dir|
-    puts "Current working directory: #{Dir.pwd}"
+    puts "Current working directory: #{temp_dir}"
     sh("ARKANA_RUNNING_CI_INTEGRATION_TESTS=true arkana --config-filepath #{config_file} --dotenv-filepath #{dotenv_file} --include-environments dev,staging")
     Dir.chdir("tests/MySecrets")
     sh("swift test")
@@ -31,7 +31,7 @@ task :test_kotlin do
   dotenv_file = File.absolute_path("spec/fixtures/.env.fruitloops")
   directory_to_copy = File.absolute_path("spec/fixtures/kotlin")
   with_temp_dir do |temp_dir|
-    puts "Current working directory: #{Dir.pwd}"
+    puts "Current working directory: #{temp_dir}"
     FileUtils.copy_entry(directory_to_copy, "tests")
     sh("ARKANA_RUNNING_CI_INTEGRATION_TESTS=true arkana --lang kotlin --config-filepath #{config_file} --dotenv-filepath #{dotenv_file} --include-environments dev,staging")
     Dir.chdir("tests")

lib/arkana/encoder.rb

@@ -26,10 +26,9 @@ def self.encode(string, cipher)
       result << (byte ^ cipher[index % cipher.length]) # XOR operation with a value of the cipher array.
     end
 
-    encoded_key = []
-    result.each do |element|
+    encoded_key = result.map do |element|
       # Warning: this might be specific to Swift implementation. When generating code for other languages, beware.
-      encoded_key << format("%#x", element) # Format the binary number to "0xAB" format.
+      format("%#x", element) # Format the binary number to "0xAB" format.
     end
 
     encoded_key.join(", ")

lib/arkana/models/salt.rb

@@ -10,10 +10,9 @@ class Salt
 
   def initialize(raw:)
     @raw = raw
-    formatted_salt = []
-    raw.each do |element|
+    formatted_salt = raw.map do |element|
       # Warning: this might be specific to Swift implementation. When generating code for other languages, beware.
-      formatted_salt << format("%#x", element)
+      format("%#x", element)
     end
     @formatted = formatted_salt.join(", ")
   end

spec/models/config_spec.rb

@@ -55,7 +55,7 @@
     end
   end
 
-  describe `#environment_keys` do
+  describe "#environment_keys" do
     context "when there are no environments" do
       subject { super().environment_keys }
 
@@ -130,7 +130,7 @@
     end
   end
 
-  describe `#all_keys` do
+  describe "#all_keys" do
     it "is not empty" do
       expect(subject.all_keys).not_to be_empty
     end

spec/models/secret_spec.rb

@@ -18,7 +18,7 @@
     end
   end
 
-  describe `#environment` do
+  describe "#environment" do
     subject { super().environment }
 
     context "when key is equal to protocol_key" do