Properly exclude some classes in code coverage.

Using a custom task to create the filter based on the
app packages for the main project and its library projects and
the list of class to exclude.

Change-Id: Id37862bf53656bd17991b5c307d772ed2019650b

1 files changed, 95 insertions, 0 deletions

diff --git a/anttasks/src/com/android/ant/GetEmmaFilterTask.java b/anttasks/src/com/android/ant/GetEmmaFilterTask.java
new file mode 100644
index 0000000..f449f8d
--- /dev/null
+++ b/anttasks/src/com/android/ant/GetEmmaFilterTask.java
@@ -0,0 +1,95 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.android.ant;
+
+import org.apache.tools.ant.BuildException;
+import org.apache.tools.ant.Task;
+
+/**
+ * Task building an emma filter to remove all build-only classes.
+ *
+ * Currently ignore:
+ * app.package.R
+ * app.package.R$*
+ * app.package.Manifest
+ * app.package.BuildConfig
+ *
+ */
+public class GetEmmaFilterTask extends Task {
+
+    private static final String[] FILTER_CLASSES = new String[] {
+        "R", "R$*", "Manifest", "BuildConfig"
+    };
+
+    private String mAppPackage;
+    private String mLibraryPackagesRefId;
+    private String mFilterOut;
+
+
+    public void setAppPackage(String appPackage) {
+        mAppPackage = appPackage;
+    }
+
+    public void setLibraryPackagesRefId(String libraryPackagesRefId) {
+        mLibraryPackagesRefId = libraryPackagesRefId;
+    }
+
+    public void setFilterOut(String filterOut) {
+        mFilterOut = filterOut;
+    }
+
+    @Override
+    public void execute() throws BuildException {
+        if (mAppPackage == null) {
+            throw new BuildException("Missing attribute appPackage");
+        }
+        if (mLibraryPackagesRefId == null) {
+            throw new BuildException("Missing attribute libraryPackagesRefId");
+        }
+        if (mFilterOut == null) {
+            throw new BuildException("Missing attribute filterOut");
+        }
+
+        StringBuilder sb = new StringBuilder();
+
+        String libraryPackagesValue = getProject().getProperty(mLibraryPackagesRefId);
+
+        if (libraryPackagesValue != null && libraryPackagesValue.length() > 0) {
+            // split the app packages.
+            String[] libPackages = libraryPackagesValue.split(";");
+
+            for (String libPackage : libPackages) {
+                if (libPackage.length() > 0) {
+                    for (String filterClass : FILTER_CLASSES) {
+                        sb.append(libPackage).append('.').append(filterClass).append(',');
+                    }
+                }
+            }
+        }
+
+        // add the app package:
+        final int count = FILTER_CLASSES.length;
+        for (int i = 0 ; i < count ; i++) {
+            sb.append(mAppPackage).append('.').append(FILTER_CLASSES[i]);
+            if (i < count - 1) {
+                sb.append(',');
+            }
+        }
+
+        getProject().setProperty(mFilterOut, sb.toString());
+    }
+}