diff --git a/functions/_pure_prompt_k8s.fish b/functions/_pure_prompt_k8s.fish
index 94086820..a992fee8 100644
--- a/functions/_pure_prompt_k8s.fish
+++ b/functions/_pure_prompt_k8s.fish
@@ -1,5 +1,8 @@
 function _pure_prompt_k8s
-    if $pure_enable_k8s; and _pure_check_availability pure_enable_k8s kubectl
+    if set --query pure_enable_k8s;
+        and test "$pure_enable_k8s" = true;
+        and _pure_check_availability pure_enable_k8s kubectl
+
         set -l context (_pure_set_color $pure_color_k8s_context)(_pure_k8s_context)
         set -l namespace (_pure_set_color $pure_color_k8s_namespace)(_pure_k8s_namespace)
         echo "$pure_symbol_k8s_prefix $context/$namespace"
diff --git a/tests/_pure_prompt_k8s.test.fish b/tests/_pure_prompt_k8s.test.fish
new file mode 100644
index 00000000..2783d2dc
--- /dev/null
+++ b/tests/_pure_prompt_k8s.test.fish
@@ -0,0 +1,38 @@
+source (dirname (status filename))/fixtures/constants.fish
+source (dirname (status filename))/mocks/mocks.fish
+source (dirname (status filename))/../functions/_pure_prompt_k8s.fish
+source (dirname (status filename))/../functions/_pure_k8s_context.fish
+source (dirname (status filename))/../functions/_pure_k8s_namespace.fish
+source (dirname (status filename))/../functions/_pure_check_availability.fish
+@echo (_print_filename (status filename))
+
+function before_each
+    _purge_configs
+    _disable_colors
+end
+
+function teardown
+    _clean_all_mocks
+end
+
+
+@test "_pure_prompt_k8s: ensure default behaviour has no error" (
+    _pure_prompt_k8s
+) $status -eq $SUCCESS
+
+
+@test "_pure_prompt_k8s: ensure default behaviour print nothing" (
+    echo (_pure_prompt_k8s)
+) = $EMPTY
+
+
+before_each
+@test "_pure_prompt_k8s: print kubernetes context and namespace" (
+    set --universal pure_enable_k8s true
+    set --universal pure_symbol_k8s_prefix "☸"
+    _mock kubectl
+
+    _pure_prompt_k8s
+) = '☸ my-context/my-namespace'
+
+teardown
diff --git a/tests/mocks/kubectl.mock.fish b/tests/mocks/kubectl.mock.fish
new file mode 100644
index 00000000..e0b8fe90
--- /dev/null
+++ b/tests/mocks/kubectl.mock.fish
@@ -0,0 +1,17 @@
+function kubectl \
+    --description 'kubectl mock for test' \
+    --argument-names \
+    topcommand \
+    subcommand
+
+    if test $topcommand = config
+        if test $subcommand = current-context
+            echo my-context
+        end
+        if test $subcommand = view
+            echo my-namespace
+        end
+    else
+        echo "unknown command"
+    end
+end # mock
diff --git a/tests/mocks/mocks.fish b/tests/mocks/mocks.fish
new file mode 100644
index 00000000..915416d5
--- /dev/null
+++ b/tests/mocks/mocks.fish
@@ -0,0 +1,31 @@
+function _mock \
+    --description "Invoke a mock function" \
+    --argument-names \
+    function_name
+
+    set mock_filepath (dirname (status filename))/$function_name.mock.fish
+    if test -e $mock_filepath
+        source (dirname (status filename))/$function_name.mock.fish
+        set --global --append __mocks $function_name
+    end
+end
+
+
+function _clean_mock \
+    --description "Clean a mock function" \
+    --argument-names \
+    function_name
+
+    functions --erase $function_name
+end
+
+function _clean_all_mocks \
+    --description "Clean all mock function"
+    set --local new_mocks
+    for mock in $__mocks
+        if functions --query $mock
+            functions --erase $mock
+        end
+    end
+    set --global __mocks
+end