fix: readable terminal selection with the light theme (#1319)

plugins/ssh-terminal/tests/frontend/look/terminal-theme.test.ts

@@ -0,0 +1,21 @@
+import { describe, expect, it } from "vitest";
+import { resolveTermixThemeColors } from "../../../src/frontend/look/terminal-theme";
+import { TERMINAL_THEMES } from "../../../src/frontend/look/terminal-themes";
+
+describe("resolveTermixThemeColors", () => {
+  it("uses the light selection color with the light UI theme", () => {
+    const colors = resolveTermixThemeColors("termix", "light");
+    expect(colors.background).toBe("#ffffff");
+    expect(colors.selectionBackground).toBe(
+      TERMINAL_THEMES.termixLight.colors.selectionBackground,
+    );
+  });
+
+  it("keeps the dark selection color with dark UI themes", () => {
+    const colors = resolveTermixThemeColors("termix", "dracula");
+    expect(colors.background).toBe("#282a36");
+    expect(colors.selectionBackground).toBe(
+      TERMINAL_THEMES.termixDark.colors.selectionBackground,
+    );
+  });
+});