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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.core;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Key;
import com.google.inject.Module;
import com.google.inject.name.Names;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author Simon Thoresen Hult
*/
public class ApplicationConfigModuleTestCase {
@Test
void requireThatEntriesAreBoundWithLowerCaseKeys() {
Map<String, String> config = new HashMap<>();
config.put("foo_key", "foo");
config.put("BAR_key", "bar");
config.put("BAZ_KEY", "baz");
Injector injector = Guice.createInjector(new ApplicationConfigModule(config));
assertBinding(injector, "foo_key", "foo");
assertBinding(injector, "bar_key", "bar");
assertBinding(injector, "baz_key", "baz");
}
@Test
void requireThatEntriesAreBoundWithUnmodifiedValue() {
Map<String, String> config = new HashMap<>();
config.put("foo", "foo_val");
config.put("bar", "BAR_val");
config.put("baz", "BAZ_VAL");
Injector injector = Guice.createInjector(new ApplicationConfigModule(config));
assertBinding(injector, "foo", "foo_val");
assertBinding(injector, "bar", "BAR_val");
assertBinding(injector, "baz", "BAZ_VAL");
}
@Test
void requireThatUpperCaseKeysPrecedeLowerCaseKeys() {
Map<String, String> config = new HashMap<>();
config.put("foo", "lower-case");
assertBinding(config, "foo", "lower-case");
config.put("Foo", "mixed-case 1");
assertBinding(config, "foo", "mixed-case 1");
config.put("FOO", "upper-case");
assertBinding(config, "foo", "upper-case");
config.put("FOo", "mixed-case 2");
assertBinding(config, "foo", "upper-case");
}
@Test
void requireThatNullFileNameThrowsException() throws IOException {
try {
ApplicationConfigModule.newInstanceFromFile(null);
fail();
} catch (NullPointerException e) {
}
}
@Test
void requireThatFileNotFoundThrowsException() throws IOException {
try {
ApplicationConfigModule.newInstanceFromFile("/file/not/found");
fail();
} catch (FileNotFoundException e) {
}
}
@Test
void requireThatPropertieFilesCanBeRead() throws IOException {
Properties props = new Properties();
props.put("foo_key", "foo_val");
File file = File.createTempFile("config-", ".properties");
file.deleteOnExit();
FileOutputStream out = new FileOutputStream(file);
props.store(out, null);
out.close();
assertBinding(ApplicationConfigModule.newInstanceFromFile(file.getAbsolutePath()), "foo_key", "foo_val");
}
private static void assertBinding(Map<String, String> config, String stringName, String expected) {
assertBinding(new ApplicationConfigModule(config), stringName, expected);
}
private static void assertBinding(Module module, String stringName, String expected) {
assertBinding(Guice.createInjector(module), stringName, expected);
}
private static void assertBinding(Injector injector, String stringName, String expected) {
assertEquals(expected, injector.getInstance(Key.get(String.class, Names.named(stringName))));
}
}
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