Add test for expressions and factories

smallrye · Dec 4, 2023 · 56f6e27 · 56f6e27
1 parent 5a96de2
commit 56f6e27
Showing 1 changed file with 35 additions and 0 deletions.
diff --git a/implementation/src/test/java/io/smallrye/config/ConfigSourceFactoryTest.java b/implementation/src/test/java/io/smallrye/config/ConfigSourceFactoryTest.java
@@ -1,9 +1,11 @@
 package io.smallrye.config;
 
+import static io.smallrye.config.KeyValuesConfigSource.config;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.util.Collections;
 import java.util.HashMap;
+import java.util.List;
 import java.util.Map;
 
 import org.eclipse.microprofile.config.spi.ConfigSource;
@@ -40,4 +42,37 @@ public Iterable<ConfigSource> getConfigSources(final ConfigSourceContext context
             return Collections.singleton(new PropertiesConfigSource(properties, "", 100));
         }
     }
+
+    @Test
+    void expression() {
+        SmallRyeConfig config = new SmallRyeConfigBuilder()
+                .addDefaultInterceptors()
+                .withSources(new ExpressionConfigSourceFactory())
+                .withSources(config("expression.value", "12${DEFAULT:}"))
+                .withSources(new EnvConfigSource(Map.of("DEFAULT", "34"), 100))
+                .build();
+
+        assertEquals("1234", config.getRawValue("factory.expression"));
+    }
+
+    @ConfigMapping(prefix = "expression")
+    interface Expression {
+        @WithDefault("${DEFAULT:}")
+        String value();
+    }
+
+    static class ExpressionConfigSourceFactory implements ConfigSourceFactory {
+        @Override
+        public Iterable<ConfigSource> getConfigSources(final ConfigSourceContext context) {
+            SmallRyeConfig config = new SmallRyeConfigBuilder()
+                    .withSources(new ConfigSourceContext.ConfigSourceContextConfigSource(context))
+                    .withMapping(Expression.class)
+                    .build();
+
+            Expression mapping = config.getConfigMapping(Expression.class);
+            assertEquals("1234", mapping.value());
+
+            return List.of(new PropertiesConfigSource(Map.of("factory.expression", mapping.value()), "", 100));
+        }
+    }
 }