Add jacoco filter tests

Add tests for converting jacoco filters to command line arguments
to soong_zip.

Bug: 64836607
Test: jacoco_test.go
Change-Id: I969fa877e4be19bb92dcab5a796a4e4ec3fc166a

java/jacoco_test.go

@@ -0,0 +1,84 @@
+// Copyright 2017 Google Inc. All rights reserved.
+//
+// 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 java
+
+import "testing"
+
+func TestJacocoFilterToSpecs(t *testing.T) {
+	testCases := []struct {
+		name, in, out string
+	}{
+		{
+			name: "class wildcard",
+			in:   "package.Class*",
+			out:  "package/Class*.class",
+		},
+		{
+			name: "package wildcard",
+			in:   "package.*",
+			out:  "package/**/*.class",
+		},
+		{
+			name: "all wildcard",
+			in:   "*",
+			out:  "**/*.class",
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			got, err := jacocoFilterToSpec(testCase.in)
+			if err != nil {
+				t.Error(err)
+			}
+			if got != testCase.out {
+				t.Errorf("expected %q got %q", testCase.out, got)
+			}
+		})
+	}
+}
+
+func TestJacocoFiltersToZipCommand(t *testing.T) {
+	testCases := []struct {
+		name               string
+		includes, excludes []string
+		out                string
+	}{
+		{
+			name:     "implicit wildcard",
+			includes: []string{},
+			out:      "**/*.class",
+		},
+		{
+			name:     "only include",
+			includes: []string{"package/Class.class"},
+			out:      "package/Class.class",
+		},
+		{
+			name:     "multiple includes",
+			includes: []string{"package/Class.class", "package2/Class.class"},
+			out:      "package/Class.class package2/Class.class",
+		},
+	}
+
+	for _, testCase := range testCases {
+		t.Run(testCase.name, func(t *testing.T) {
+			got := jacocoFiltersToZipCommand(testCase.includes, testCase.excludes)
+			if got != testCase.out {
+				t.Errorf("expected %q got %q", testCase.out, got)
+			}
+		})
+	}
+}