Add some tests

pmd-java/src/test/kotlin/net/sourceforge/pmd/lang/java/ast/ASTLiteralTest.kt

@@ -408,6 +408,23 @@ $delim
                     it::getBase shouldBe 10
                 }
             }
+
+            "0." should parseAs {
+                number(DOUBLE) {
+                    it::getBase shouldBe 10
+                }
+            }
+            val doubleOrFloatInBase10: NodeSpec<*> = {
+                number {
+                    it::getBase shouldBe 10
+                }
+            }
+            "05e10" should parseAs(doubleOrFloatInBase10)
+            "05e10f" should parseAs(doubleOrFloatInBase10)
+            "00f" should parseAs(doubleOrFloatInBase10)
+            "00d" should parseAs(doubleOrFloatInBase10)
+            "00D" should parseAs(doubleOrFloatInBase10)
+            "050.0" should parseAs(doubleOrFloatInBase10)
         }
     }
 
@@ -424,6 +441,7 @@ $delim
                     it::getValueAsDouble shouldBe 30.0
                     it::getValueAsFloat shouldBe 30f
                     it::getValueAsInt shouldBe 30
+                    it::getBase shouldBe 16
                 }
             }
 
@@ -436,6 +454,7 @@ $delim
                     it::getValueAsDouble shouldBe 7.5
                     it::getValueAsFloat shouldBe 7.5f
                     it::getValueAsInt shouldBe 7
+                    it::getBase shouldBe 16
                 }
             }
 
@@ -458,6 +477,7 @@ $delim
                     it::getValueAsFloat shouldBe 15f
                     it::getValueAsInt shouldBe 15
                     it::getValueAsLong shouldBe 15L
+                    it::getBase shouldBe 16
                 }
             }
 
@@ -508,6 +528,7 @@ $delim
                     it::getValueAsFloat shouldBe 3f
                     it::getValueAsInt shouldBe 3
                     it::getValueAsLong shouldBe 3L
+                    it::getBase shouldBe 2
                 }
             }