Add presets.js as single source of truth for filter definitions

2026-08-05 16:05:13 -05:00
parent dfd2bbe3a3
commit c485816135
2 changed files with 119 additions and 0 deletions
@@ -0,0 +1,45 @@
+import { PRESETS, DEFAULT_PRESET, isValidPresetSlug } from '../../src/presets';
+
+describe( 'presets', () => {
+    test( 'exports 8 presets', () => {
+        expect( PRESETS ).toHaveLength( 8 );
+    } );
+
+    test( 'each preset has the required shape', () => {
+        for ( const preset of PRESETS ) {
+            expect( preset ).toEqual(
+                expect.objectContaining( {
+                    slug: expect.stringMatching( /^[a-z-]+$/ ),
+                    label: expect.any( String ),
+                    color: expect.stringMatching( /^#[0-9a-f]{3,6}$/i ),
+                    cssFilter: expect.any( String ),
+                } )
+            );
+        }
+    } );
+
+    test( 'slugs are unique', () => {
+        const slugs = PRESETS.map( ( p ) => p.slug );
+        expect( new Set( slugs ).size ).toBe( slugs.length );
+    } );
+
+    test( 'normal preset has filter: none', () => {
+        const normal = PRESETS.find( ( p ) => p.slug === 'normal' );
+        expect( normal.cssFilter ).toBe( 'none' );
+    } );
+
+    test( 'DEFAULT_PRESET is "normal" and exists in PRESETS', () => {
+        expect( DEFAULT_PRESET ).toBe( 'normal' );
+        expect( PRESETS.map( ( p ) => p.slug ) ).toContain( DEFAULT_PRESET );
+    } );
+
+    test( 'isValidPresetSlug returns true for known slugs', () => {
+        expect( isValidPresetSlug( 'normal' ) ).toBe( true );
+        expect( isValidPresetSlug( 'dramatic' ) ).toBe( true );
+    } );
+
+    test( 'isValidPresetSlug returns false for unknown slugs', () => {
+        expect( isValidPresetSlug( 'foobar' ) ).toBe( false );
+        expect( isValidPresetSlug( '' ) ).toBe( false );
+    } );
+} );