tools: use the same same skipping logic for the platform specific _test.v files in v test-self too (#20815)

cmd/tools/modules/testing/common.v

@@ -13,6 +13,8 @@ import runtime
 import rand
 import strings
 
+pub const host_os = pref.get_host_os()
+
 pub const github_job = os.getenv('GITHUB_JOB')
 
 pub const runner_os = os.getenv('RUNNER_OS') // GitHub runner OS
@@ -386,6 +388,23 @@ pub fn (mut ts TestSession) test() {
 		if ts.build_tools && dot_relative_file.ends_with('_test.v') {
 			continue
 		}
+
+		// Skip OS-specific tests if we are not running that OS
+		// Special case for android_outside_termux because of its
+		// underscores
+		if file.ends_with('_android_outside_termux_test.v') {
+			if !testing.host_os.is_target_of('android_outside_termux') {
+				remaining_files << dot_relative_file
+				ts.skip_files << file
+				continue
+			}
+		}
+		os_target := file.all_before_last('_test.v').all_after_last('_')
+		if !testing.host_os.is_target_of(os_target) {
+			remaining_files << dot_relative_file
+			ts.skip_files << file
+			continue
+		}
 		remaining_files << dot_relative_file
 	}
 	remaining_files = vtest.filter_vtest_only(remaining_files, fix_slashes: false)

cmd/tools/vtest-self.v

@@ -94,10 +94,6 @@ const skip_test_files = [
 	'vlib/db/pg/pg_orm_test.v', // pg not installed
 	'vlib/db/pg/pg_test.v', // pg not installed
 	'vlib/db/pg/pg_double_test.v', // pg not installed
-	'vlib/v/tests/filtering_android_outside_termux_test.v', // platform filtering not baked into v test-self
-	'vlib/v/tests/filtering_macos_test.v', // platform filtering not baked into v test-self
-	'vlib/v/tests/filtering_nix_test.v', // platform filtering not baked into v test-self
-	'vlib/v/tests/filtering_windows_test.v', // platform filtering not baked into v test-self
 ]
 // These tests are too slow to be run in the CI on each PR/commit
 // in the sanitized modes:

cmd/tools/vtest.v

@@ -5,8 +5,6 @@ import os.cmdline
 import testing
 import v.pref
 
-const host_os = pref.get_host_os()
-
 struct Context {
 mut:
 	verbose   bool
@@ -132,18 +130,6 @@ enum ShouldTestStatus {
 }
 
 fn (mut ctx Context) should_test(path string, backend string) ShouldTestStatus {
-	// Skip OS-specific tests if we are not running that OS
-	// Special case for android_outside_termux because of its
-	// underscores
-	if path.ends_with('_android_outside_termux_test.v') {
-		if !host_os.is_target_of('android_outside_termux') {
-			return .skip
-		}
-	}
-	os_target := path.all_before_last('_test.v').all_after_last('_')
-	if !host_os.is_target_of(os_target) {
-		return .skip
-	}
 	if path.ends_with('mysql_orm_test.v') {
 		testing.find_started_process('mysqld') or { return .skip }
 	}