diff --git a/tests/modules/programs/man/assertion.nix b/tests/modules/programs/man/assertion.nix
new file mode 100644
index 000000000..4c0fdb97b
--- /dev/null
+++ b/tests/modules/programs/man/assertion.nix
@@ -0,0 +1,15 @@
+{
+  config = {
+    test.asserts.assertions.expected = [
+      ''
+        man-db and mandoc can't be used as the man page viewer at the same time!
+      ''
+    ];
+
+    programs.man = {
+      enable = true;
+      man-db.enable = true;
+      mandoc.enable = true;
+    };
+  };
+}
diff --git a/tests/modules/programs/man/default.nix b/tests/modules/programs/man/default.nix
index 9b066db73..64a4e03bb 100644
--- a/tests/modules/programs/man/default.nix
+++ b/tests/modules/programs/man/default.nix
@@ -2,6 +2,11 @@
 
 {
   man-apropos = ./apropos.nix;
+  man-assertion = ./assertion.nix;
+  man-disabled-man-db = ./disabled-man-db.nix;
+  man-disabled-mandoc = ./disabled-mandoc.nix;
+  man-extra-config = ./extra-config.nix;
+  man-mandoc = ./mandoc.nix;
   man-no-manpath = ./no-manpath.nix;
   man-no-caches-without-package = ./no-caches-without-package.nix;
 }
diff --git a/tests/modules/programs/man/disabled-man-db.nix b/tests/modules/programs/man/disabled-man-db.nix
new file mode 100644
index 000000000..f5dccf63d
--- /dev/null
+++ b/tests/modules/programs/man/disabled-man-db.nix
@@ -0,0 +1,14 @@
+{
+  config = {
+    programs.man = {
+      enable = false;
+      man-db.enable = true;
+      mandoc.enable = false;
+      generateCaches = true;
+    };
+
+    nmt.script = ''
+      assertPathNotExists home-files/.manpath
+    '';
+  };
+}
diff --git a/tests/modules/programs/man/disabled-mandoc.nix b/tests/modules/programs/man/disabled-mandoc.nix
new file mode 100644
index 000000000..c16efba97
--- /dev/null
+++ b/tests/modules/programs/man/disabled-mandoc.nix
@@ -0,0 +1,31 @@
+{
+  config = {
+    programs.man = {
+      enable = false;
+      man-db.enable = false;
+      mandoc.enable = true;
+      generateCaches = true;
+    };
+
+    test.stubs = {
+      mandoc = {
+        outPath = null;
+        buildScript = ''
+          mkdir -p $out/bin
+          touch $out/bin/{man,makewhatis}
+          chmod +x $out/bin/*
+        '';
+      };
+    };
+
+    nmt.script = ''
+      hmSessVars=home-path/etc/profile.d/hm-session-vars.sh
+
+      assertPathNotExists home-files/.manpath
+      assertPathNotExists home-files/.local/share/mandoc/man
+
+      assertFileExists "$hmSessVars"
+      assertFileNotRegex "$hmSessVars" 'MANPATH='
+    '';
+  };
+}
diff --git a/tests/modules/programs/man/extra-config.nix b/tests/modules/programs/man/extra-config.nix
new file mode 100644
index 000000000..caad03763
--- /dev/null
+++ b/tests/modules/programs/man/extra-config.nix
@@ -0,0 +1,24 @@
+{ lib, options, ... }:
+
+{
+  config = {
+    test.asserts.warnings.expected = [
+      "The option `programs.man.extraConfig' defined in ${lib.showFiles options.programs.man.extraConfig.files} has been renamed to `programs.man.man-db.extraConfig'."
+    ];
+
+    programs.man = {
+      enable = true;
+      generateCaches = true;
+      extraConfig = ''
+        MANDATORY_MANPATH /usr/man
+        SECTION 1 n l 8
+      '';
+    };
+
+    nmt.script = ''
+      assertFileExists home-files/.manpath
+      assertFileContains home-files/.manpath 'MANDATORY_MANPATH /usr/man'
+      assertFileContains home-files/.manpath 'SECTION 1 n l 8'
+    '';
+  };
+}
diff --git a/tests/modules/programs/man/mandoc.nix b/tests/modules/programs/man/mandoc.nix
new file mode 100644
index 000000000..6fa1d5039
--- /dev/null
+++ b/tests/modules/programs/man/mandoc.nix
@@ -0,0 +1,31 @@
+{
+  config = {
+    programs.man = {
+      enable = true;
+      man-db.enable = false;
+      mandoc.enable = true;
+      generateCaches = true;
+    };
+
+    test.stubs = {
+      mandoc = {
+        outPath = null;
+        buildScript = ''
+          mkdir -p $out/bin
+          touch $out/bin/{man,makewhatis}
+          chmod +x $out/bin/*
+        '';
+      };
+    };
+
+    nmt.script = ''
+      hmSessVars=home-path/etc/profile.d/hm-session-vars.sh
+
+      assertLinkExists home-files/.local/share/mandoc/man
+
+      assertFileExists $hmSessVars
+      assertFileContains $hmSessVars \
+        'export MANPATH="/home/hm-user/.local/share/mandoc/man''${MANPATH:+:}$MANPATH"'
+    '';
+  };
+}