diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/goto-namespace-import01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/goto-namespace-import01-errors.yaml
new file mode 100644
index 000000000..8fe7d69b8
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/goto-namespace-import01-errors.yaml
@@ -0,0 +1,4 @@
+- message: Found a goto() call with a url that isn't prefixed with the base path.
+  line: 4
+  column: 18
+  suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/goto-namespace-import01-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/goto-namespace-import01-input.svelte
new file mode 100644
index 000000000..9e9868428
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/goto-namespace-import01-input.svelte
@@ -0,0 +1,5 @@
+<script>
+	import * as navigation from '$app/navigation';
+
+	navigation.goto('/foo');
+</script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/pushState-namespace-import01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/pushState-namespace-import01-errors.yaml
new file mode 100644
index 000000000..2de0e9fc5
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/pushState-namespace-import01-errors.yaml
@@ -0,0 +1,4 @@
+- message: Found a pushState() call with a url that isn't prefixed with the base path.
+  line: 4
+  column: 23
+  suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/pushState-namespace-import01-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/pushState-namespace-import01-input.svelte
new file mode 100644
index 000000000..a3c883949
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/pushState-namespace-import01-input.svelte
@@ -0,0 +1,5 @@
+<script>
+	import * as navigation from '$app/navigation';
+
+	navigation.pushState('/foo');
+</script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/replaceState-namespace-import01-errors.yaml b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/replaceState-namespace-import01-errors.yaml
new file mode 100644
index 000000000..39e0e1c85
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/replaceState-namespace-import01-errors.yaml
@@ -0,0 +1,5 @@
+- message: Found a replaceState() call with a url that isn't prefixed with the
+    base path.
+  line: 4
+  column: 26
+  suggestions: null
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/replaceState-namespace-import01-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/replaceState-namespace-import01-input.svelte
new file mode 100644
index 000000000..47db8ff31
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/invalid/replaceState-namespace-import01-input.svelte
@@ -0,0 +1,5 @@
+<script>
+	import * as navigation from '$app/navigation';
+
+	navigation.replaceState('/foo');
+</script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/goto-base-namespace-import01-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/goto-base-namespace-import01-input.svelte
new file mode 100644
index 000000000..3a85c9011
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/goto-base-namespace-import01-input.svelte
@@ -0,0 +1,8 @@
+<script>
+	import * as paths from '$app/paths';
+	import { goto } from '$app/navigation';
+
+	// eslint-disable-next-line prefer-template -- Testing both variants
+	goto(paths.base + '/foo/');
+	goto(`${alias}/foo/`);
+</script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/link-base-namespace-import01-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/link-base-namespace-import01-input.svelte
new file mode 100644
index 000000000..8e10ccd6e
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/link-base-namespace-import01-input.svelte
@@ -0,0 +1,6 @@
+<script>
+	import * as paths from '$app/paths';
+</script>
+
+<a href={paths.base + '/foo/'}>Click me!</a>;
+<a href={`${alias}/foo/`}>Click me!</a>;
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/pushState-base-namespace-import01-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/pushState-base-namespace-import01-input.svelte
new file mode 100644
index 000000000..83d16254e
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/pushState-base-namespace-import01-input.svelte
@@ -0,0 +1,8 @@
+<script>
+	import * as paths from '$app/paths';
+	import { pushState } from '$app/navigation';
+
+	// eslint-disable-next-line prefer-template -- Testing both variants
+	pushState(paths.base + '/foo/');
+	pushState(`${alias}/foo/`);
+</script>
diff --git a/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/replaceState-base-namespace-import01-input.svelte b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/replaceState-base-namespace-import01-input.svelte
new file mode 100644
index 000000000..c87594323
--- /dev/null
+++ b/packages/eslint-plugin-svelte/tests/fixtures/rules/no-navigation-without-base/valid/replaceState-base-namespace-import01-input.svelte
@@ -0,0 +1,8 @@
+<script>
+	import * as paths from '$app/paths';
+	import { replaceState } from '$app/navigation';
+
+	// eslint-disable-next-line prefer-template -- Testing both variants
+	replaceState(paths.base + '/foo/');
+	replaceState(`${alias}/foo/`);
+</script>