Add tests

Author: mxcl

src/hooks/useConfig.test.ts

@@ -12,7 +12,6 @@ Deno.test("useConfig", () => {
     assertEquals(config.UserAgent, "libpkgx")
   }
 
-
   const PKGX_PANTRY_PATH = Deno.build.os == 'windows' ? "C:\\foo;D:\\bar" : "/foo:/bar"
 
   config = ConfigDefault({ PKGX_PANTRY_PATH, CI: "true" })
@@ -45,3 +44,20 @@ Deno.test("useConfig empty PKGX_PANTRY_PATH is ignored", () => {
   assertEquals(ConfigDefault({ PKGX_PANTRY_PATH: "" }).pantries, [])
   assertEquals(ConfigDefault({ PKGX_PANTRY_PATH: `  ${SEP} ${SEP}` }).pantries, [])
 })
+
+Deno.test("pkgx^2 rules", () => {
+  switch (Deno.build.os) {
+  case 'windows':
+    assertEquals(ConfigDefault({ XDG_DATA_HOME: "C:\\foo" }).data, Path.home().join("AppData/Local"));
+    assertEquals(ConfigDefault().data, Path.home().join("AppData/Local"));
+    break;
+  case 'darwin':
+    assertEquals(ConfigDefault({ XDG_DATA_HOME: "/foo" }).data, Path.home().join("Library/Application Support/pkgx"));
+    assertEquals(ConfigDefault().data, Path.home().join("Library/Application Support/pkgx"));
+    break;
+  case 'linux':
+    assertEquals(ConfigDefault({ XDG_DATA_HOME: "/foo" }).data, new Path("/foo/pkgx"));
+    assertEquals(ConfigDefault().data, Path.home().join(".local/share/pkgx"));
+    break;
+  }
+})