test(select): add unit tests

tests/Select/Select.test.svelte

@@ -0,0 +1,39 @@
+<script lang="ts">
+  import { Select, SelectItem } from "carbon-components-svelte";
+
+  export let selected: string | number | undefined = undefined;
+  export let disabled = false;
+  export let invalid = false;
+  export let invalidText = "";
+  export let warn = false;
+  export let warnText = "";
+  export let helperText = "";
+  export let hideLabel = false;
+  export let labelText = "Select label";
+  export let size: "sm" | "xl" | undefined = undefined;
+  export let inline = false;
+  export let light = false;
+</script>
+
+<Select
+  bind:selected
+  {disabled}
+  {invalid}
+  {invalidText}
+  {warn}
+  {warnText}
+  {helperText}
+  {hideLabel}
+  {labelText}
+  {size}
+  {inline}
+  {light}
+  data-testid="select"
+  on:change={() => console.log("change")}
+  on:input={() => console.log("input")}
+  on:update={(e) => console.log("update", e.detail)}
+>
+  <SelectItem value="option-1" text="Option 1" />
+  <SelectItem value="option-2" text="Option 2" />
+  <SelectItem value="option-3" text="Option 3" />
+</Select>