diff --git a/java/ql/test/library-tests/frameworks/apache-ant/Test.java b/java/ql/test/library-tests/frameworks/apache-ant/Test.java
new file mode 100644
index 00000000000..13ba98041c5
--- /dev/null
+++ b/java/ql/test/library-tests/frameworks/apache-ant/Test.java
@@ -0,0 +1,26 @@
+package generatedtest;
+
+import org.apache.tools.zip.ZipEntry;
+
+// Test case generated by GenerateFlowTestCase.ql
+public class Test {
+
+	Object source() {
+		return null;
+	}
+
+	void sink(Object o) {}
+
+	public void test() throws Exception {
+
+		{
+			// "org.apache.tools.zip;ZipEntry;true;ZipEntry;(String);;Argument[0];Argument[-1];taint;ai-generated"
+			ZipEntry out = null;
+			String in = (String) source();
+			out = new ZipEntry(in);
+			sink(out); // $ hasTaintFlow
+		}
+
+	}
+
+}
diff --git a/java/ql/test/library-tests/frameworks/apache-ant/options b/java/ql/test/library-tests/frameworks/apache-ant/options
new file mode 100644
index 00000000000..ded896502ed
--- /dev/null
+++ b/java/ql/test/library-tests/frameworks/apache-ant/options
@@ -0,0 +1 @@
+//semmle-extractor-options: --javac-args -cp ${testdir}/../../../stubs/apache-ant-1.10.13
\ No newline at end of file
diff --git a/java/ql/test/library-tests/frameworks/apache-ant/test.expected b/java/ql/test/library-tests/frameworks/apache-ant/test.expected
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/java/ql/test/library-tests/frameworks/apache-ant/test.ql b/java/ql/test/library-tests/frameworks/apache-ant/test.ql
new file mode 100644
index 00000000000..5d91e4e8e26
--- /dev/null
+++ b/java/ql/test/library-tests/frameworks/apache-ant/test.ql
@@ -0,0 +1,2 @@
+import java
+import TestUtilities.InlineFlowTest
diff --git a/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/CentralDirectoryParsingZipExtraField.java b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/CentralDirectoryParsingZipExtraField.java
new file mode 100644
index 00000000000..6fcf116aa25
--- /dev/null
+++ b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/CentralDirectoryParsingZipExtraField.java
@@ -0,0 +1,10 @@
+// Generated automatically from org.apache.tools.zip.CentralDirectoryParsingZipExtraField for testing purposes
+
+package org.apache.tools.zip;
+
+import org.apache.tools.zip.ZipExtraField;
+
+public interface CentralDirectoryParsingZipExtraField extends ZipExtraField
+{
+    void parseFromCentralDirectoryData(byte[] p0, int p1, int p2);
+}
diff --git a/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/GeneralPurposeBit.java b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/GeneralPurposeBit.java
new file mode 100644
index 00000000000..16beb77481d
--- /dev/null
+++ b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/GeneralPurposeBit.java
@@ -0,0 +1,24 @@
+// Generated automatically from org.apache.tools.zip.GeneralPurposeBit for testing purposes
+
+package org.apache.tools.zip;
+
+
+public class GeneralPurposeBit implements Cloneable
+{
+    public GeneralPurposeBit(){}
+    public Object clone(){ return null; }
+    public boolean equals(Object p0){ return false; }
+    public boolean usesDataDescriptor(){ return false; }
+    public boolean usesEncryption(){ return false; }
+    public boolean usesStrongEncryption(){ return false; }
+    public boolean usesUTF8ForNames(){ return false; }
+    public byte[] encode(){ return null; }
+    public int hashCode(){ return 0; }
+    public static GeneralPurposeBit parse(byte[] p0, int p1){ return null; }
+    public static int UFT8_NAMES_FLAG = 0;
+    public void encode(byte[] p0, int p1){}
+    public void useDataDescriptor(boolean p0){}
+    public void useEncryption(boolean p0){}
+    public void useStrongEncryption(boolean p0){}
+    public void useUTF8ForNames(boolean p0){}
+}
diff --git a/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/UnparseableExtraFieldData.java b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/UnparseableExtraFieldData.java
new file mode 100644
index 00000000000..df24aad1a79
--- /dev/null
+++ b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/UnparseableExtraFieldData.java
@@ -0,0 +1,18 @@
+// Generated automatically from org.apache.tools.zip.UnparseableExtraFieldData for testing purposes
+
+package org.apache.tools.zip;
+
+import org.apache.tools.zip.CentralDirectoryParsingZipExtraField;
+import org.apache.tools.zip.ZipShort;
+
+public class UnparseableExtraFieldData implements CentralDirectoryParsingZipExtraField
+{
+    public UnparseableExtraFieldData(){}
+    public ZipShort getCentralDirectoryLength(){ return null; }
+    public ZipShort getHeaderId(){ return null; }
+    public ZipShort getLocalFileDataLength(){ return null; }
+    public byte[] getCentralDirectoryData(){ return null; }
+    public byte[] getLocalFileDataData(){ return null; }
+    public void parseFromCentralDirectoryData(byte[] p0, int p1, int p2){}
+    public void parseFromLocalFileData(byte[] p0, int p1, int p2){}
+}
diff --git a/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipEntry.java b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipEntry.java
new file mode 100644
index 00000000000..83ab406142d
--- /dev/null
+++ b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipEntry.java
@@ -0,0 +1,152 @@
+// Generated automatically from org.apache.tools.zip.ZipEntry for testing purposes
+
+package org.apache.tools.zip;
+
+import java.io.File;
+import java.util.Date;
+import org.apache.tools.zip.GeneralPurposeBit;
+import org.apache.tools.zip.UnparseableExtraFieldData;
+import org.apache.tools.zip.ZipExtraField;
+import org.apache.tools.zip.ZipShort;
+
+public class ZipEntry extends java.util.zip.ZipEntry implements Cloneable {
+    protected ZipEntry() {
+        super("");
+    }
+
+    protected void setExtra() {}
+
+    protected void setName(String p0) {}
+
+    protected void setName(String p0, byte[] p1) {}
+
+    protected void setPlatform(int p0) {}
+
+    public Date getLastModifiedDate() {
+        return null;
+    }
+
+    public GeneralPurposeBit getGeneralPurposeBit() {
+        return null;
+    }
+
+    public Object clone() {
+        return null;
+    }
+
+    public String getName() {
+        return null;
+    }
+
+    public UnparseableExtraFieldData getUnparseableExtraFieldData() {
+        return null;
+    }
+
+    public ZipEntry(File p0, String p1) {
+        super("");
+    }
+
+    public ZipEntry(String p0) {
+        super("");
+    }
+
+    public ZipEntry(java.util.zip.ZipEntry p0) {
+        super("");
+    }
+
+    public ZipEntry(org.apache.tools.zip.ZipEntry p0) {
+        super("");
+    }
+
+    public ZipExtraField getExtraField(ZipShort p0) {
+        return null;
+    }
+
+    public ZipExtraField[] getExtraFields() {
+        return null;
+    }
+
+    public ZipExtraField[] getExtraFields(boolean p0) {
+        return null;
+    }
+
+    public boolean equals(Object p0) {
+        return false;
+    }
+
+    public boolean isDirectory() {
+        return false;
+    }
+
+    public byte[] getCentralDirectoryExtra() {
+        return null;
+    }
+
+    public byte[] getLocalFileDataExtra() {
+        return null;
+    }
+
+    public byte[] getRawName() {
+        return null;
+    }
+
+    public int getInternalAttributes() {
+        return 0;
+    }
+
+    public int getMethod() {
+        return 0;
+    }
+
+    public int getPlatform() {
+        return 0;
+    }
+
+    public int getUnixMode() {
+        return 0;
+    }
+
+    public int hashCode() {
+        return 0;
+    }
+
+    public long getExternalAttributes() {
+        return 0;
+    }
+
+    public long getSize() {
+        return 0;
+    }
+
+    public static int CRC_UNKNOWN = 0;
+    public static int PLATFORM_FAT = 0;
+    public static int PLATFORM_UNIX = 0;
+
+    public void addAsFirstExtraField(ZipExtraField p0) {}
+
+    public void addExtraField(ZipExtraField p0) {}
+
+    public void removeExtraField(ZipShort p0) {}
+
+    public void removeUnparseableExtraFieldData() {}
+
+    public void setCentralDirectoryExtra(byte[] p0) {}
+
+    public void setComprSize(long p0) {}
+
+    public void setExternalAttributes(long p0) {}
+
+    public void setExtra(byte[] p0) {}
+
+    public void setExtraFields(ZipExtraField[] p0) {}
+
+    public void setGeneralPurposeBit(GeneralPurposeBit p0) {}
+
+    public void setInternalAttributes(int p0) {}
+
+    public void setMethod(int p0) {}
+
+    public void setSize(long p0) {}
+
+    public void setUnixMode(int p0) {}
+}
diff --git a/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipExtraField.java b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipExtraField.java
new file mode 100644
index 00000000000..9fbac163529
--- /dev/null
+++ b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipExtraField.java
@@ -0,0 +1,15 @@
+// Generated automatically from org.apache.tools.zip.ZipExtraField for testing purposes
+
+package org.apache.tools.zip;
+
+import org.apache.tools.zip.ZipShort;
+
+public interface ZipExtraField
+{
+    ZipShort getCentralDirectoryLength();
+    ZipShort getHeaderId();
+    ZipShort getLocalFileDataLength();
+    byte[] getCentralDirectoryData();
+    byte[] getLocalFileDataData();
+    void parseFromLocalFileData(byte[] p0, int p1, int p2);
+}
diff --git a/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipShort.java b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipShort.java
new file mode 100644
index 00000000000..7d60df12c47
--- /dev/null
+++ b/java/ql/test/stubs/apache-ant-1.10.13/org/apache/tools/zip/ZipShort.java
@@ -0,0 +1,22 @@
+// Generated automatically from org.apache.tools.zip.ZipShort for testing purposes
+
+package org.apache.tools.zip;
+
+
+public class ZipShort implements Cloneable
+{
+    protected ZipShort() {}
+    public Object clone(){ return null; }
+    public String toString(){ return null; }
+    public ZipShort(byte[] p0){}
+    public ZipShort(byte[] p0, int p1){}
+    public ZipShort(int p0){}
+    public boolean equals(Object p0){ return false; }
+    public byte[] getBytes(){ return null; }
+    public int getValue(){ return 0; }
+    public int hashCode(){ return 0; }
+    public static byte[] getBytes(int p0){ return null; }
+    public static int getValue(byte[] p0){ return 0; }
+    public static int getValue(byte[] p0, int p1){ return 0; }
+    public static void putShort(int p0, byte[] p1, int p2){}
+}