Convert int to long during value retrieval

Author: ogesaku

src/main/java/com/coditory/quark/config/ConfigValue.java

@@ -76,6 +76,9 @@ private <T> T getOrParse(ConfigValueParser parser, Class<T> type) {
         if (value instanceof String) {
             return parse(parser, type, (String) value);
         }
+        if (value instanceof Number && Number.class.isAssignableFrom(type)) {
+            return parse(parser, type, String.valueOf(value));
+        }
         throw new ConfigValueConversionException(type, path.toString(), value);
     }
 

src/test/groovy/com/coditory/quark/config/NumberConversionSpec.groovy

@@ -0,0 +1,52 @@
+package com.coditory.quark.config
+
+import spock.lang.Specification
+
+class NumberConversionSpec extends Specification {
+    def "should convert int to long"() {
+        given:
+            Config config = Config.builder()
+                    .putAll(a: value)
+                    .build()
+        when:
+            Long result = config.getLong("a")
+        then:
+            result == expected
+        where:
+            value  || expected
+            0      || 0L
+            -1     || -1L
+            12     || 12L
+            123123 || 123123L
+    }
+
+    def "should not convert float to long"() {
+        given:
+            Config config = Config.builder()
+                    .putAll(a: 1.2)
+                    .build()
+        when:
+            config.getLong("a")
+        then:
+            thrown(ConfigValueConversionException)
+    }
+
+    def "should convert float or int to double"() {
+        given:
+            Config config = Config.builder()
+                    .putAll(a: value)
+                    .build()
+        when:
+            Double result = config.getDouble("a")
+        then:
+            result == expected
+        where:
+            value    || expected
+            0        || 0d
+            -1       || -1d
+            1.2      || 1.2d
+            -123.123 || -123.123d
+            12       || 12d
+            123123   || 123123d
+    }
+}