Add tests for isSingleTokenString

Signed-off-by: Arthit Suriyawongkul <[email protected]>

Author: bact

src/test/java/org/spdx/utility/compare/LicenseCompareHelperTest.java

@@ -552,9 +552,11 @@ public void testisSingleTokenString() {
 		assertTrue(LicenseCompareHelper.isSingleTokenString("''"));
 		assertTrue(LicenseCompareHelper.isSingleTokenString("token"));
 		assertTrue(LicenseCompareHelper.isSingleTokenString(" token"));
+		assertTrue(LicenseCompareHelper.isSingleTokenString(" token "));
 		assertTrue(LicenseCompareHelper.isSingleTokenString("token\n"));
 		assertTrue(LicenseCompareHelper.isSingleTokenString("\ntoken"));
 		assertTrue(LicenseCompareHelper.isSingleTokenString(" \n token "));
+		assertTrue(LicenseCompareHelper.isSingleTokenString(":;token?"));
 		assertTrue(LicenseCompareHelper.isSingleTokenString("'''token"));
 		assertTrue(LicenseCompareHelper.isSingleTokenString("token'''"));
 		assertFalse(LicenseCompareHelper.isSingleTokenString("a and"));