diff --git a/spec/commands/mapping_create_spec.cr b/spec/commands/mapping_create_spec.cr
index 42c58af..e03e191 100644
--- a/spec/commands/mapping_create_spec.cr
+++ b/spec/commands/mapping_create_spec.cr
@@ -3,5 +3,11 @@ require "../../src/commands/mapping_create"
 
 describe GX::Commands::MappingCreate do
   context "Initialization" do
+    it "initializes with a mock FileSystemManager and RootConfig" do
+      config = GX::Config.new
+      root_config = GX::Models::RootConfig.new
+      command = GX::Commands::MappingCreate.new(config)
+      command.should be_a(GX::Commands::MappingCreate)
+    end
   end
 end
diff --git a/spec/commands/mapping_edit_spec.cr b/spec/commands/mapping_edit_spec.cr
index a042c80..2bedf71 100644
--- a/spec/commands/mapping_edit_spec.cr
+++ b/spec/commands/mapping_edit_spec.cr
@@ -3,5 +3,10 @@ require "../../src/commands/mapping_edit"
 
 describe GX::Commands::MappingEdit do
   context "Initialization" do
+    it "initializes with a mock FileSystemManager" do
+      config = GX::Config.new
+      command = GX::Commands::MappingEdit.new(config)
+      command.should be_a(GX::Commands::MappingEdit)
+    end
   end
 end
diff --git a/spec/commands/mapping_list_spec.cr b/spec/commands/mapping_list_spec.cr
index 008862a..a0f5890 100644
--- a/spec/commands/mapping_list_spec.cr
+++ b/spec/commands/mapping_list_spec.cr
@@ -1,7 +1,108 @@
+
 require "../spec_helper"
 require "../../src/commands/mapping_list"
+require "../../src/models/gocryptfs_config"
+require "../../src/models/sshfs_config"
+require "../../src/models/httpdirfs_config"
 
 describe GX::Commands::MappingList do
   context "Initialization" do
+    it "initializes with a mock FileSystemManager and RootConfig" do
+      config = GX::Config.new
+      root_config = GX::Models::RootConfig.new
+      command = GX::Commands::MappingList.new(config)
+      command.should be_a(GX::Commands::MappingList)
+    end
+  end
+
+  context "Functioning" do
+    it "lists mappings when there are no filesystems" do
+      config = GX::Config.new
+      root_config = GX::Models::RootConfig.new
+      command = GX::Commands::MappingList.new(config)
+
+      output = capture_output do
+        command.execute
+      end
+
+      output.should include("TYPE")
+      output.should include("NAME")
+      output.should include("MOUNTED")
+    end
+
+    it "lists mappings when there are multiple filesystems" do
+      config = GX::Config.new
+      root_config = GX::Models::RootConfig.new
+
+      gocryptfs_config = GX::Models::GoCryptFSConfig.new(
+        GX::Parsers::Options::MappingCreateOptions.new(
+          type: "gocryptfs",
+          name: "test_gocryptfs",
+          encrypted_path: "/encrypted/path"
+        )
+      )
+      sshfs_config = GX::Models::SshFSConfig.new(
+        GX::Parsers::Options::MappingCreateOptions.new(
+          type: "sshfs",
+          name: "test_sshfs",
+          remote_user: "user",
+          remote_host: "host",
+          remote_path: "/remote/path"
+        )
+      )
+      httpdirfs_config = GX::Models::HttpDirFSConfig.new(
+        GX::Parsers::Options::MappingCreateOptions.new(
+          type: "httpdirfs",
+          name: "test_httpdirfs",
+          url: "http://example.com"
+        )
+      )
+
+      root_config.add_filesystem(gocryptfs_config)
+      root_config.add_filesystem(sshfs_config)
+      root_config.add_filesystem(httpdirfs_config)
+
+      command = GX::Commands::MappingList.new(config)
+
+      output = capture_output do
+        command.execute
+      end
+
+      output.should include("gocryptfs")
+      output.should include("test_gocryptfs")
+      output.should include("false")
+
+      output.should include("sshfs")
+      output.should include("test_sshfs")
+      output.should include("false")
+
+      output.should include("httpdirfs")
+      output.should include("test_httpdirfs")
+      output.should include("false")
+    end
+
+    it "ensures the output format is correct" do
+      config = GX::Config.new
+      root_config = GX::Models::RootConfig.new
+      config.instance_variable_set("@root", root_config)
+
+      gocryptfs_config = GX::Models::GoCryptFSConfig.new(
+        GX::Parsers::Options::MappingCreateOptions.new(
+          type: "gocryptfs",
+          name: "test_gocryptfs",
+          encrypted_path: "/encrypted/path"
+        )
+      )
+      root_config.add_filesystem(gocryptfs_config)
+
+      command = GX::Commands::MappingList.new(config)
+
+      output = capture_output do
+        command.execute
+      end
+
+      output.should match(/TYPE\s+NAME\s+MOUNTED/)
+      output.should match(/gocryptfs\s+test_gocryptfs\s+false/)
+    end
   end
 end