1 files changed, 58 insertions, 0 deletions

diff --git a/test/bem/_at-theme.scss b/test/bem/_at-theme.scss
new file mode 100644
index 0000000..29a4eba
--- /dev/null
+++ b/test/bem/_at-theme.scss
@@ -0,0 +1,58 @@
+// sass-lint:disable class-name-format force-element-nesting force-pseudo-nesting mixins-before-declarations
+
+@use 'true' as *;
+@use '../../src/bem';
+
+//
+// Included test cases:
+//  - /// 1 /// - single theme
+//  - /// 2 /// - with sub-theme
+//
+
+@include it('at-theme') {
+    @include assert('single theme') { /// 1 ///
+        @include output(false) {
+            @include bem.block('something') {
+                @include bem.at-theme('theme') {
+                    font-size: 2em;
+                }
+            }
+        }
+
+        @include expect(false) {
+            .t-theme .something,
+            [class*=' t-'] .t-theme .something,
+            [class^='t-'] .t-theme .something {
+                font-size: 2em;
+            }
+        }
+    }
+
+    @include assert('with sub-theme') { /// 2 ///
+        @include output(false) {
+            @include bem.block('something') {
+                @include bem.at-theme('theme') {
+                    font-size: 2em;
+                }
+
+                @include bem.at-theme('theme', 'subtheme') {
+                    font-size: 3em;
+                }
+            }
+        }
+
+        @include expect(false) {
+            .t-theme .something,
+            [class*=' t-'] .t-theme .something,
+            [class^='t-'] .t-theme .something {
+                font-size: 2em;
+            }
+
+            .t-theme .t-subtheme .something,
+            [class*=' t-'] .t-theme .t-subtheme .something,
+            [class^='t-'] .t-theme .t-subtheme .something {
+                font-size: 3em;
+            }
+        }
+    }
+}