oh-my-posh: add module

tests/modules/programs/oh-my-posh/bash.nix

@@ -0,0 +1,21 @@
+{ ... }:
+
+{
+  programs = {
+    bash.enable = true;
+
+    oh-my-posh = {
+      enable = true;
+      useTheme = "jandedobbeleer";
+    };
+  };
+
+  test.stubs.oh-my-posh = { };
+
+  nmt.script = ''
+    assertFileExists home-files/.bashrc
+    assertFileContains \
+      home-files/.bashrc \
+      '/bin/oh-my-posh init bash --config'
+  '';
+}

tests/modules/programs/oh-my-posh/default.nix

@@ -0,0 +1,5 @@
+{
+  oh-my-posh-bash = ./bash.nix;
+  oh-my-posh-zsh = ./zsh.nix;
+  oh-my-posh-fish = ./fish.nix;
+}

tests/modules/programs/oh-my-posh/fish.nix

@@ -0,0 +1,28 @@
+{ lib, ... }:
+
+{
+  programs = {
+    fish.enable = true;
+
+    oh-my-posh = {
+      enable = true;
+      useTheme = "jandedobbeleer";
+    };
+  };
+
+  # Needed to avoid error with dummy fish package.
+  xdg.dataFile."fish/home-manager_generated_completions".source =
+    lib.mkForce (builtins.toFile "empty" "");
+
+  test.stubs = {
+    oh-my-posh = { };
+    fish = { };
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.config/fish/config.fish
+    assertFileContains \
+      home-files/.config/fish/config.fish \
+      '/bin/oh-my-posh init fish --config'
+  '';
+}

tests/modules/programs/oh-my-posh/zsh.nix

@@ -0,0 +1,24 @@
+{ ... }:
+
+{
+  programs = {
+    zsh.enable = true;
+
+    oh-my-posh = {
+      enable = true;
+      useTheme = "jandedobbeleer";
+    };
+  };
+
+  test.stubs = {
+    oh-my-posh = { };
+    zsh = { };
+  };
+
+  nmt.script = ''
+    assertFileExists home-files/.zshrc
+    assertFileContains \
+      home-files/.zshrc \
+      '/bin/oh-my-posh init zsh --config'
+  '';
+}