Java: add basic ECJ integration tests

Author: smowton

java/ql/integration-tests/all-platforms/java/ecj-sample-noexit/Test.java

@@ -0,0 +1 @@
+public class Test { }

java/ql/integration-tests/all-platforms/java/ecj-sample-noexit/test.expected

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+| Test.java:1:14:1:17 | Test |

java/ql/integration-tests/all-platforms/java/ecj-sample-noexit/test.py

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+import urllib.request
+from create_database_utils import *
+
+urllib.request.urlretrieve("https://repo1.maven.org/maven2/org/eclipse/jdt/ecj/3.37.0/ecj-3.37.0.jar", "ecj.jar")
+
+run_codeql_database_create(["java -cp ecj.jar org.eclipse.jdt.internal.compiler.batch.Main -noExit Test.java"], lang="java")

java/ql/integration-tests/all-platforms/java/ecj-sample-noexit/test.ql

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+import java
+
+select any(Class c | c.fromSource())

java/ql/integration-tests/all-platforms/java/ecj-sample/Test.java

@@ -0,0 +1 @@
+public class Test { }

java/ql/integration-tests/all-platforms/java/ecj-sample/test.expected

@@ -0,0 +1 @@
+| Test.java:1:14:1:17 | Test |

java/ql/integration-tests/all-platforms/java/ecj-sample/test.py

@@ -0,0 +1,6 @@
+import urllib.request
+from create_database_utils import *
+
+urllib.request.urlretrieve("https://repo1.maven.org/maven2/org/eclipse/jdt/ecj/3.37.0/ecj-3.37.0.jar", "ecj.jar")
+
+run_codeql_database_create(["java -cp ecj.jar org.eclipse.jdt.internal.compiler.batch.Main Test.java"], lang="java")

java/ql/integration-tests/all-platforms/java/ecj-sample/test.ql

@@ -0,0 +1,3 @@
+import java
+
+select any(Class c | c.fromSource())