cargo: add module

tests/modules/programs/cargo/default.nix

@@ -0,0 +1,4 @@
+{
+  cargo = ./example-config.nix;
+  cargo-empty-config = ./empty-config.nix;
+}

tests/modules/programs/cargo/empty-config.nix

@@ -0,0 +1,14 @@
+{
+  programs.docker-cli = {
+    settings = {
+      net = {
+        git-fetch-with-cli = true;
+      };
+    };
+  };
+
+  nmt.script = ''
+    assertPathNotExists home-files/.cargo/config
+    assertPathNotExists home-files/.cargo/config.toml
+  '';
+}

tests/modules/programs/cargo/example-config.nix

@@ -0,0 +1,22 @@
+{
+  programs.cargo = {
+    enable = true;
+
+    settings = {
+      net = {
+        git-fetch-with-cli = true;
+      };
+    };
+  };
+
+  nmt.script =
+    let
+      configTestPath = "home-files/.cargo/config.toml";
+    in
+    ''
+      assertPathNotExists home-files/.cargo/config
+      assertFileExists ${configTestPath}
+      assertFileContent ${configTestPath} \
+        ${./example-config.toml}
+    '';
+}

tests/modules/programs/cargo/example-config.toml

@@ -0,0 +1,2 @@
+[net]
+git-fetch-with-cli = true