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Add engineSupplier property to ScriptTemplateConfigurer

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This commit adds an engineSupplier property to ScriptTemplateConfigurer
and ScriptTemplateView in order to be able to customize the ScriptEngine
when sharedEngine is set to false.

This can be useful with Graal.js for example.

Closes gh-23258
This commit is contained in:
Sebastien Deleuze
2019-07-11 15:48:18 +02:00
parent 01125a571c
commit c8f8dfa39e
8 changed files with 303 additions and 46 deletions
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spring-webflux/src/test/java/org/springframework/web/reactive/result/view/script/ScriptTemplateViewTests.java
+59 -1
View File
@@ -169,7 +169,28 @@ public class ScriptTemplateViewTests {
this.view.setRenderFunction("render");
assertThatIllegalArgumentException().isThrownBy(() ->
this.view.setApplicationContext(this.context))
.withMessageContaining("'engine' or 'engineName'");
.withMessageContaining("You should define either 'engine', 'engineSupplier' or 'engineName'.");
}
@Test // gh-23258
public void engineAndEngineSupplierBothDefined() {
ScriptEngine engine = mock(InvocableScriptEngine.class);
this.view.setEngineSupplier(() -> engine);
this.view.setEngine(engine);
this.view.setRenderFunction("render");
assertThatIllegalArgumentException().isThrownBy(() ->
this.view.setApplicationContext(this.context))
.withMessageContaining("You should define either 'engine', 'engineSupplier' or 'engineName'.");
}
@Test // gh-23258
public void engineNameAndEngineSupplierBothDefined() {
this.view.setEngineSupplier(() -> mock(InvocableScriptEngine.class));
this.view.setEngineName("test");
this.view.setRenderFunction("render");
assertThatIllegalArgumentException().isThrownBy(() ->
this.view.setApplicationContext(this.context))
.withMessageContaining("You should define either 'engine', 'engineSupplier' or 'engineName'.");
}
@Test
@@ -182,6 +203,43 @@ public class ScriptTemplateViewTests {
.withMessageContaining("sharedEngine");
}
@Test // gh-23258
public void engineSupplierWithSharedEngine() {
this.configurer.setEngineSupplier(() -> mock(InvocableScriptEngine.class));
this.configurer.setRenderObject("Template");
this.configurer.setRenderFunction("render");
this.configurer.setSharedEngine(true);
DirectFieldAccessor accessor = new DirectFieldAccessor(this.view);
this.view.setApplicationContext(this.context);
ScriptEngine engine1 = this.view.getEngine();
ScriptEngine engine2 = this.view.getEngine();
assertThat(engine1).isNotNull();
assertThat(engine2).isNotNull();
assertThat(accessor.getPropertyValue("renderObject")).isEqualTo("Template");
assertThat(accessor.getPropertyValue("renderFunction")).isEqualTo("render");
assertThat(accessor.getPropertyValue("sharedEngine")).isEqualTo(true);
}
@SuppressWarnings("unchecked")
@Test // gh-23258
public void engineSupplierWithNonSharedEngine() {
this.configurer.setEngineSupplier(() -> mock(InvocableScriptEngine.class));
this.configurer.setRenderObject("Template");
this.configurer.setRenderFunction("render");
this.configurer.setSharedEngine(false);
DirectFieldAccessor accessor = new DirectFieldAccessor(this.view);
this.view.setApplicationContext(this.context);
ScriptEngine engine1 = this.view.getEngine();
ScriptEngine engine2 = this.view.getEngine();
assertThat(engine1).isNotNull();
assertThat(engine2).isNotNull();
assertThat(accessor.getPropertyValue("renderObject")).isEqualTo("Template");
assertThat(accessor.getPropertyValue("renderFunction")).isEqualTo("render");
assertThat(accessor.getPropertyValue("sharedEngine")).isEqualTo(false);
}
private interface InvocableScriptEngine extends ScriptEngine, Invocable {
}