diff --git a/packages/istanbul-reports/lib/cobertura/index.js b/packages/istanbul-reports/lib/cobertura/index.js
index 85375d47..e5574faa 100644
--- a/packages/istanbul-reports/lib/cobertura/index.js
+++ b/packages/istanbul-reports/lib/cobertura/index.js
@@ -11,8 +11,11 @@ class CoberturaReport extends ReportBase {
     constructor(opts) {
         super();
 
+        opts = opts || {};
+
         this.cw = null;
         this.xml = null;
+        this.timestamp = opts.timestamp || Date.now().toString();
         this.projectRoot = opts.projectRoot || process.cwd();
         this.file = opts.file || 'cobertura-coverage.xml';
     }
@@ -41,7 +44,7 @@ class CoberturaReport extends ReportBase {
             'branches-valid': metrics.branches.total,
             'branches-covered': metrics.branches.covered,
             'branch-rate': metrics.branches.pct / 100.0,
-            timestamp: Date.now().toString(),
+            timestamp: this.timestamp,
             complexity: '0',
             version: '0.1'
         });
@@ -52,15 +55,12 @@ class CoberturaReport extends ReportBase {
     }
 
     onSummary(node) {
-        if (node.isRoot()) {
-            return;
-        }
         const metrics = node.getCoverageSummary(true);
         if (!metrics) {
             return;
         }
         this.xml.openTag('package', {
-            name: escape(asJavaPackage(node)),
+            name: node.isRoot() ? 'main' : escape(asJavaPackage(node)),
             'line-rate': metrics.lines.pct / 100.0,
             'branch-rate': metrics.branches.pct / 100.0
         });
@@ -68,7 +68,8 @@ class CoberturaReport extends ReportBase {
     }
 
     onSummaryEnd(node) {
-        if (node.isRoot()) {
+        const metrics = node.getCoverageSummary(true);
+        if (!metrics) {
             return;
         }
         this.xml.closeTag('classes');
diff --git a/packages/istanbul-reports/test/cobertura/index.js b/packages/istanbul-reports/test/cobertura/index.js
new file mode 100644
index 00000000..2a39fe86
--- /dev/null
+++ b/packages/istanbul-reports/test/cobertura/index.js
@@ -0,0 +1,57 @@
+'use strict';
+/* globals describe, it, beforeEach, before, after */
+const fs = require('fs');
+const path = require('path');
+const isWindows = require('is-windows');
+const FileWriter = require('istanbul-lib-report/lib/file-writer');
+const istanbulLibReport = require('istanbul-lib-report');
+const istanbulLibCoverage = require('istanbul-lib-coverage');
+const CoberturaReport = require('../../lib/cobertura/index');
+
+require('chai').should();
+
+describe('CoberturaReport', () => {
+    before(() => {
+        FileWriter.startCapture();
+    });
+    after(() => {
+        FileWriter.stopCapture();
+    });
+    beforeEach(() => {
+        FileWriter.resetOutput();
+    });
+
+    function createTest(file) {
+        const fixture = require(path.resolve(
+            __dirname,
+            '../fixtures/specs/' + file
+        ));
+        it(fixture.title, function() {
+            if (isWindows()) {
+                // appveyor does not render console color.
+                return this.skip();
+            }
+            const context = istanbulLibReport.createContext({
+                dir: './',
+                coverageMap: istanbulLibCoverage.createCoverageMap(fixture.map)
+            });
+            const tree = context.getTree('pkg');
+            const report = new CoberturaReport({
+                file: '-',
+                timestamp: '123456789',
+                ...fixture.opts
+            });
+            tree.visit(report, context);
+            const output = FileWriter.getOutput();
+            output.should.equal(fixture.coberturaCoverageData);
+        });
+    }
+
+    fs.readdirSync(path.resolve(__dirname, '../fixtures/specs')).forEach(
+        file => {
+            if (file.indexOf('.json') !== -1) {
+                createTest(file);
+            }
+        }
+    );
+});
diff --git a/packages/istanbul-reports/test/fixtures/specs/100-line-100-branch.json b/packages/istanbul-reports/test/fixtures/specs/100-line-100-branch.json
index 2cbe41b0..b289394e 100644
--- a/packages/istanbul-reports/test/fixtures/specs/100-line-100-branch.json
+++ b/packages/istanbul-reports/test/fixtures/specs/100-line-100-branch.json
@@ -1,5 +1,9 @@
 {
     "title": "handles 100% branch and line coverage",
+    "opts": {
+        "maxCols": 80,
+        "projectRoot": "/Users/benjamincoe/oss/"
+    },
     "textReportExpected": "----------|---------|----------|---------|---------|-------------------\nFile      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s \n----------|---------|----------|---------|---------|-------------------\n\u001b[32;1mAll files\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m     100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[33;1m                 \u001b[0m \n\u001b[32;1m index.js\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m     100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[33;1m                 \u001b[0m \n----------|---------|----------|---------|---------|-------------------\n",
     "htmlSpaFiles": ["index.js.html", "index.html"],
     "htmlSpaCoverageData": {
@@ -81,6 +85,7 @@
             }
         ]
     },
+    "coberturaCoverageData": "<?xml version=\"1.0\" ?>\n<!DOCTYPE coverage SYSTEM \"http://cobertura.sourceforge.net/xml/coverage-04.dtd\">\n<coverage lines-valid=\"46\" lines-covered=\"46\" line-rate=\"1\" branches-valid=\"39\" branches-covered=\"39\" branch-rate=\"1\" timestamp=\"123456789\" complexity=\"0\" version=\"0.1\">\n  <sources>\n    <source>/Users/benjamincoe/oss/</source>\n  </sources>\n  <packages>\n    <package name=\"main\" line-rate=\"1\" branch-rate=\"1\">\n      <classes>\n        <class name=\"index.js\" filename=\"test-exclude/index.js\" line-rate=\"1\" branch-rate=\"1\">\n          <methods>\n            <method name=\"TestExclude\" hits=\"21\" signature=\"()V\">\n              <lines>\n                <line number=\"12\" hits=\"21\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_1)\" hits=\"21\" signature=\"()V\">\n              <lines>\n                <line number=\"50\" hits=\"21\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_2)\" hits=\"95\" signature=\"()V\">\n              <lines>\n                <line number=\"52\" hits=\"95\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_3)\" hits=\"56\" signature=\"()V\">\n              <lines>\n                <line number=\"61\" hits=\"56\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_4)\" hits=\"7\" signature=\"()V\">\n              <lines>\n                <line number=\"71\" hits=\"7\"/>\n              </lines>\n            </method>\n            <method name=\"prepGlobPatterns\" hits=\"26\" signature=\"()V\">\n              <lines>\n                <line number=\"84\" hits=\"26\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_6)\" hits=\"105\" signature=\"()V\">\n              <lines>\n                <line number=\"85\" hits=\"105\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_7)\" hits=\"21\" signature=\"()V\">\n              <lines>\n                <line number=\"100\" hits=\"21\"/>\n              </lines>\n            </method>\n          </methods>\n          <lines>\n            <line number=\"1\" hits=\"1\" branch=\"false\"/>\n            <line number=\"2\" hits=\"1\" branch=\"false\"/>\n            <line number=\"3\" hits=\"1\" branch=\"false\"/>\n            <line number=\"4\" hits=\"1\" branch=\"false\"/>\n            <line number=\"5\" hits=\"1\" branch=\"false\"/>\n            <line number=\"13\" hits=\"21\" branch=\"false\"/>\n            <line number=\"21\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"22\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"24\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (5/5)\"/>\n            <line number=\"25\" hits=\"7\" branch=\"false\"/>\n            <line number=\"28\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"29\" hits=\"15\" branch=\"false\"/>\n            <line number=\"32\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"33\" hits=\"5\" branch=\"false\"/>\n            <line number=\"35\" hits=\"16\" branch=\"false\"/>\n            <line number=\"38\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"39\" hits=\"5\" branch=\"false\"/>\n            <line number=\"42\" hits=\"21\" branch=\"false\"/>\n            <line number=\"50\" hits=\"1\" branch=\"false\"/>\n            <line number=\"51\" hits=\"21\" branch=\"false\"/>\n            <line number=\"52\" hits=\"21\" branch=\"false\"/>\n            <line number=\"53\" hits=\"95\" branch=\"false\"/>\n            <line number=\"55\" hits=\"95\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"56\" hits=\"95\" branch=\"false\"/>\n            <line number=\"58\" hits=\"21\" branch=\"false\"/>\n            <line number=\"61\" hits=\"1\" branch=\"false\"/>\n            <line number=\"62\" hits=\"56\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"65\" hits=\"56\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"67\" hits=\"55\" branch=\"false\"/>\n            <line number=\"68\" hits=\"55\" branch=\"true\" condition-coverage=\"100% (3/3)\"/>\n            <line number=\"71\" hits=\"1\" branch=\"false\"/>\n            <line number=\"72\" hits=\"7\" branch=\"false\"/>\n            <line number=\"76\" hits=\"7\" branch=\"true\" condition-coverage=\"100% (5/5)\"/>\n            <line number=\"77\" hits=\"6\" branch=\"false\"/>\n            <line number=\"78\" hits=\"6\" branch=\"false\"/>\n            <line number=\"80\" hits=\"1\" branch=\"false\"/>\n            <line number=\"85\" hits=\"26\" branch=\"false\"/>\n            <line number=\"87\" hits=\"105\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"88\" hits=\"39\" branch=\"false\"/>\n            <line number=\"92\" hits=\"105\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"93\" hits=\"50\" branch=\"false\"/>\n            <line number=\"96\" hits=\"105\" branch=\"false\"/>\n            <line number=\"100\" hits=\"1\" branch=\"false\"/>\n            <line number=\"101\" hits=\"21\" branch=\"false\"/>\n            <line number=\"104\" hits=\"1\" branch=\"false\"/>\n            <line number=\"113\" hits=\"1\" branch=\"false\"/>\n          </lines>\n        </class>\n      </classes>\n    </package>\n  </packages>\n</coverage>\n",
     "map": {
         "/Users/benjamincoe/oss/test-exclude/index.js": {
             "path": "/Users/benjamincoe/oss/test-exclude/index.js",
diff --git a/packages/istanbul-reports/test/fixtures/specs/100-line-missing-branch.json b/packages/istanbul-reports/test/fixtures/specs/100-line-missing-branch.json
index e950f26a..c0561a71 100644
--- a/packages/istanbul-reports/test/fixtures/specs/100-line-missing-branch.json
+++ b/packages/istanbul-reports/test/fixtures/specs/100-line-missing-branch.json
@@ -1,6 +1,10 @@
 {
     "title": "100% line coverage, missing branch coverage",
     "textReportExpected": "----------|---------|----------|---------|---------|-------------------\nFile      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s \n----------|---------|----------|---------|---------|-------------------\n\u001b[32;1mAll files\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m   95.34\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[33;1m                 \u001b[0m \n\u001b[32;1m index.js\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m   95.34\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[33;1m21,29            \u001b[0m \n----------|---------|----------|---------|---------|-------------------\n",
+    "opts": {
+        "maxCols": 80,
+        "projectRoot": "/Users/benjamincoe/oss/"
+    },
     "htmlSpaFiles": ["index.js.html", "index.html"],
     "htmlSpaCoverageData": {
         "file": "",
@@ -81,6 +85,7 @@
             }
         ]
     },
+    "coberturaCoverageData": "<?xml version=\"1.0\" ?>\n<!DOCTYPE coverage SYSTEM \"http://cobertura.sourceforge.net/xml/coverage-04.dtd\">\n<coverage lines-valid=\"46\" lines-covered=\"46\" line-rate=\"1\" branches-valid=\"43\" branches-covered=\"41\" branch-rate=\"0.9534999999999999\" timestamp=\"123456789\" complexity=\"0\" version=\"0.1\">\n  <sources>\n    <source>/Users/benjamincoe/oss/</source>\n  </sources>\n  <packages>\n    <package name=\"main\" line-rate=\"1\" branch-rate=\"0.9534999999999999\">\n      <classes>\n        <class name=\"index.js\" filename=\"test-exclude/index.js\" line-rate=\"1\" branch-rate=\"0.9534999999999999\">\n          <methods>\n            <method name=\"TestExclude\" hits=\"21\" signature=\"()V\">\n              <lines>\n                <line number=\"12\" hits=\"21\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_1)\" hits=\"21\" signature=\"()V\">\n              <lines>\n                <line number=\"50\" hits=\"21\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_2)\" hits=\"95\" signature=\"()V\">\n              <lines>\n                <line number=\"52\" hits=\"95\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_3)\" hits=\"56\" signature=\"()V\">\n              <lines>\n                <line number=\"61\" hits=\"56\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_4)\" hits=\"7\" signature=\"()V\">\n              <lines>\n                <line number=\"71\" hits=\"7\"/>\n              </lines>\n            </method>\n            <method name=\"prepGlobPatterns\" hits=\"26\" signature=\"()V\">\n              <lines>\n                <line number=\"84\" hits=\"26\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_6)\" hits=\"105\" signature=\"()V\">\n              <lines>\n                <line number=\"85\" hits=\"105\"/>\n              </lines>\n            </method>\n            <method name=\"(anonymous_7)\" hits=\"21\" signature=\"()V\">\n              <lines>\n                <line number=\"100\" hits=\"21\"/>\n              </lines>\n            </method>\n          </methods>\n          <lines>\n            <line number=\"1\" hits=\"1\" branch=\"false\"/>\n            <line number=\"2\" hits=\"1\" branch=\"false\"/>\n            <line number=\"3\" hits=\"1\" branch=\"false\"/>\n            <line number=\"4\" hits=\"1\" branch=\"false\"/>\n            <line number=\"5\" hits=\"1\" branch=\"false\"/>\n            <line number=\"13\" hits=\"21\" branch=\"false\"/>\n            <line number=\"21\" hits=\"21\" branch=\"true\" condition-coverage=\"75% (3/4)\"/>\n            <line number=\"22\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"24\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (5/5)\"/>\n            <line number=\"25\" hits=\"7\" branch=\"false\"/>\n            <line number=\"28\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"29\" hits=\"15\" branch=\"true\" condition-coverage=\"50% (1/2)\"/>\n            <line number=\"32\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"33\" hits=\"5\" branch=\"false\"/>\n            <line number=\"35\" hits=\"16\" branch=\"false\"/>\n            <line number=\"38\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"39\" hits=\"5\" branch=\"false\"/>\n            <line number=\"42\" hits=\"21\" branch=\"false\"/>\n            <line number=\"50\" hits=\"1\" branch=\"false\"/>\n            <line number=\"51\" hits=\"21\" branch=\"false\"/>\n            <line number=\"52\" hits=\"21\" branch=\"false\"/>\n            <line number=\"53\" hits=\"95\" branch=\"false\"/>\n            <line number=\"55\" hits=\"95\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"56\" hits=\"95\" branch=\"false\"/>\n            <line number=\"58\" hits=\"21\" branch=\"false\"/>\n            <line number=\"61\" hits=\"1\" branch=\"false\"/>\n            <line number=\"62\" hits=\"56\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"65\" hits=\"56\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"67\" hits=\"55\" branch=\"false\"/>\n            <line number=\"68\" hits=\"55\" branch=\"true\" condition-coverage=\"100% (3/3)\"/>\n            <line number=\"71\" hits=\"1\" branch=\"false\"/>\n            <line number=\"72\" hits=\"7\" branch=\"false\"/>\n            <line number=\"76\" hits=\"7\" branch=\"true\" condition-coverage=\"100% (5/5)\"/>\n            <line number=\"77\" hits=\"6\" branch=\"false\"/>\n            <line number=\"78\" hits=\"6\" branch=\"false\"/>\n            <line number=\"80\" hits=\"1\" branch=\"false\"/>\n            <line number=\"85\" hits=\"26\" branch=\"false\"/>\n            <line number=\"87\" hits=\"105\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"88\" hits=\"39\" branch=\"false\"/>\n            <line number=\"92\" hits=\"105\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"93\" hits=\"50\" branch=\"false\"/>\n            <line number=\"96\" hits=\"105\" branch=\"false\"/>\n            <line number=\"100\" hits=\"1\" branch=\"false\"/>\n            <line number=\"101\" hits=\"21\" branch=\"false\"/>\n            <line number=\"104\" hits=\"1\" branch=\"false\"/>\n            <line number=\"113\" hits=\"1\" branch=\"false\"/>\n          </lines>\n        </class>\n      </classes>\n    </package>\n  </packages>\n</coverage>\n",
     "map": {
         "/Users/benjamincoe/oss/test-exclude/index.js": {
             "path": "/Users/benjamincoe/oss/test-exclude/index.js",
diff --git a/packages/istanbul-reports/test/fixtures/specs/coalescence.json b/packages/istanbul-reports/test/fixtures/specs/coalescence.json
index 14095de7..34de9692 100644
--- a/packages/istanbul-reports/test/fixtures/specs/coalescence.json
+++ b/packages/istanbul-reports/test/fixtures/specs/coalescence.json
@@ -1,7 +1,8 @@
 {
     "title": "coalescense ranges of missing lines",
     "opts": {
-        "maxCols": 80
+        "maxCols": 80,
+        "projectRoot": "/"
     },
     "textReportExpected": "----------|---------|----------|---------|---------|----------------------\nFile      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s    \n----------|---------|----------|---------|---------|----------------------\n\u001b[31;1mAll files\u001b[0m | \u001b[31;1m     30\u001b[0m | \u001b[32;1m     100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[31;1m  33.33\u001b[0m | \u001b[31;1m                    \u001b[0m \n\u001b[31;1m index.js\u001b[0m | \u001b[31;1m     30\u001b[0m | \u001b[32;1m     100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[31;1m  33.33\u001b[0m | \u001b[31;1m2,4,9,21-28,32,35-37\u001b[0m \n----------|---------|----------|---------|---------|----------------------\n",
     "htmlSpaFiles": ["index.js.html", "index.html"],
@@ -84,6 +85,7 @@
             }
         ]
     },
+    "coberturaCoverageData": "<?xml version=\"1.0\" ?>\n<!DOCTYPE coverage SYSTEM \"http://cobertura.sourceforge.net/xml/coverage-04.dtd\">\n<coverage lines-valid=\"18\" lines-covered=\"6\" line-rate=\"0.3333\" branches-valid=\"0\" branches-covered=\"0\" branch-rate=\"1\" timestamp=\"123456789\" complexity=\"0\" version=\"0.1\">\n  <sources>\n    <source>/</source>\n  </sources>\n  <packages>\n    <package name=\"main\" line-rate=\"0.3333\" branch-rate=\"1\">\n      <classes>\n        <class name=\"index.js\" filename=\"index.js\" line-rate=\"0.3333\" branch-rate=\"1\">\n          <methods>\n          </methods>\n          <lines>\n            <line number=\"1\" hits=\"1\" branch=\"false\"/>\n            <line number=\"2\" hits=\"0\" branch=\"false\"/>\n            <line number=\"3\" hits=\"1\" branch=\"false\"/>\n            <line number=\"4\" hits=\"0\" branch=\"false\"/>\n            <line number=\"5\" hits=\"1\" branch=\"false\"/>\n            <line number=\"9\" hits=\"0\" branch=\"false\"/>\n            <line number=\"13\" hits=\"1\" branch=\"false\"/>\n            <line number=\"21\" hits=\"0\" branch=\"false\"/>\n            <line number=\"22\" hits=\"0\" branch=\"false\"/>\n            <line number=\"23\" hits=\"0\" branch=\"false\"/>\n            <line number=\"24\" hits=\"0\" branch=\"false\"/>\n            <line number=\"28\" hits=\"0\" branch=\"false\"/>\n            <line number=\"29\" hits=\"1\" branch=\"false\"/>\n            <line number=\"32\" hits=\"0\" branch=\"false\"/>\n            <line number=\"33\" hits=\"1\" branch=\"false\"/>\n            <line number=\"35\" hits=\"0\" branch=\"false\"/>\n            <line number=\"36\" hits=\"0\" branch=\"false\"/>\n            <line number=\"37\" hits=\"0\" branch=\"false\"/>\n          </lines>\n        </class>\n      </classes>\n    </package>\n  </packages>\n</coverage>\n",
     "map": {
         "/index.js": {
             "path": "/index.js",
diff --git a/packages/istanbul-reports/test/fixtures/specs/different-path-files.json b/packages/istanbul-reports/test/fixtures/specs/different-path-files.json
new file mode 100644
index 00000000..a7ab398d
--- /dev/null
+++ b/packages/istanbul-reports/test/fixtures/specs/different-path-files.json
@@ -0,0 +1,338 @@
+{
+    "title": "different path files in seperate packages",
+    "opts": {
+      "maxCols": 80,
+      "projectRoot": "/Users/jschmidle/oss/istanbuljs-test/"
+    },
+    "textReportExpected": "-------------------|---------|----------|---------|---------|-------------------\nFile               | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s \n-------------------|---------|----------|---------|---------|-------------------\nAll files          |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n istanbuljs-test   |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n  rootfile.js      |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n ...-test/package1 |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n  package1file.js  |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n ...ge1/subpackage |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n  ...ackagefile.js |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n ...-test/package2 |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n  package2file.js  |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n-------------------|---------|----------|---------|---------|-------------------\n",
+    "htmlSpaFiles": [
+        ["package1","package1file.js.html"],
+        ["package1","subpackage","subpackagefile.js.html"],
+        ["package2","package2file.js.html"],
+        "rootfile.js.html",
+        "index.html"
+    ],
+    "htmlSpaCoverageData": {
+        "file": "",
+        "isEmpty": true,
+        "metrics": {
+          "statements": {
+            "total": 0,
+            "covered": 0,
+            "skipped": 0,
+            "pct": 0,
+            "classForPercent": "empty"
+          },
+          "branches": {
+            "total": 0,
+            "covered": 0,
+            "skipped": 0,
+            "pct": 0,
+            "classForPercent": "empty"
+          },
+          "functions": {
+            "total": 0,
+            "covered": 0,
+            "skipped": 0,
+            "pct": 0,
+            "classForPercent": "empty"
+          },
+          "lines": {
+            "total": 0,
+            "covered": 0,
+            "skipped": 0,
+            "pct": 0,
+            "classForPercent": "empty"
+          }
+        },
+        "children": [
+          {
+            "file": "package1",
+            "isEmpty": true,
+            "metrics": {
+              "statements": {
+                "total": 0,
+                "covered": 0,
+                "skipped": 0,
+                "pct": 0,
+                "classForPercent": "empty"
+              },
+              "branches": {
+                "total": 0,
+                "covered": 0,
+                "skipped": 0,
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+    "map": {
+        "/Users/jschmidle/oss/istanbuljs-test/rootfile.js": {
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+}
diff --git a/packages/istanbul-reports/test/fixtures/specs/empty-file-skip-empty.json b/packages/istanbul-reports/test/fixtures/specs/empty-file-skip-empty.json
index 42454434..1eb5a9f1 100644
--- a/packages/istanbul-reports/test/fixtures/specs/empty-file-skip-empty.json
+++ b/packages/istanbul-reports/test/fixtures/specs/empty-file-skip-empty.json
@@ -1,7 +1,9 @@
 {
     "title": "empty file - skip empty",
     "opts": {
-        "skipEmpty": true
+        "skipEmpty": true,
+        "maxCols": 80,
+        "projectRoot": "/dev/git/istanbuljs/packages/istanbul-reports"
     },
     "textReportExpected": "----------|---------|----------|---------|---------|-------------------\nFile      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s \n----------|---------|----------|---------|---------|-------------------\n----------|---------|----------|---------|---------|-------------------\n",
     "htmlSpaFiles": ["empty.js.html", "index.html"],
@@ -84,6 +86,7 @@
             }
         ]
     },
+    "coberturaCoverageData": "<?xml version=\"1.0\" ?>\n<!DOCTYPE coverage SYSTEM \"http://cobertura.sourceforge.net/xml/coverage-04.dtd\">\n<coverage lines-valid=\"0\" lines-covered=\"0\" line-rate=\"1\" branches-valid=\"0\" branches-covered=\"0\" branch-rate=\"1\" timestamp=\"123456789\" complexity=\"0\" version=\"0.1\">\n  <sources>\n    <source>/dev/git/istanbuljs/packages/istanbul-reports</source>\n  </sources>\n  <packages>\n    <package name=\"main\" line-rate=\"1\" branch-rate=\"1\">\n      <classes>\n        <class name=\"empty.js\" filename=\"lib/text/empty.js\" line-rate=\"1\" branch-rate=\"1\">\n          <methods>\n          </methods>\n          <lines>\n          </lines>\n        </class>\n      </classes>\n    </package>\n  </packages>\n</coverage>\n",
     "map": {
         "/dev/git/istanbuljs/packages/istanbul-reports/lib/text/empty.js": {
             "path": "/dev/git/istanbuljs/packages/istanbul-reports/lib/text/empty.js",
diff --git a/packages/istanbul-reports/test/fixtures/specs/empty-file.json b/packages/istanbul-reports/test/fixtures/specs/empty-file.json
index d092e60c..c6e0eae4 100644
--- a/packages/istanbul-reports/test/fixtures/specs/empty-file.json
+++ b/packages/istanbul-reports/test/fixtures/specs/empty-file.json
@@ -1,5 +1,9 @@
 {
     "title": "empty file - show 0%",
+    "opts": {
+        "maxCols": 80,
+        "projectRoot": "/dev/git/istanbuljs/packages/istanbul-reports"
+    },
     "textReportExpected": "----------|---------|----------|---------|---------|-------------------\nFile      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s \n----------|---------|----------|---------|---------|-------------------\nAll files |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n empty.js |       0 |        0 |       0 |       0 | \u001b[31;1m                 \u001b[0m \n----------|---------|----------|---------|---------|-------------------\n",
     "htmlSpaFiles": ["empty.js.html", "index.html"],
     "htmlSpaCoverageData": {
@@ -81,6 +85,7 @@
             }
         ]
     },
+    "coberturaCoverageData": "<?xml version=\"1.0\" ?>\n<!DOCTYPE coverage SYSTEM \"http://cobertura.sourceforge.net/xml/coverage-04.dtd\">\n<coverage lines-valid=\"0\" lines-covered=\"0\" line-rate=\"1\" branches-valid=\"0\" branches-covered=\"0\" branch-rate=\"1\" timestamp=\"123456789\" complexity=\"0\" version=\"0.1\">\n  <sources>\n    <source>/dev/git/istanbuljs/packages/istanbul-reports</source>\n  </sources>\n  <packages>\n    <package name=\"main\" line-rate=\"1\" branch-rate=\"1\">\n      <classes>\n        <class name=\"empty.js\" filename=\"lib/text/empty.js\" line-rate=\"1\" branch-rate=\"1\">\n          <methods>\n          </methods>\n          <lines>\n          </lines>\n        </class>\n      </classes>\n    </package>\n  </packages>\n</coverage>\n",
     "map": {
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diff --git a/packages/istanbul-reports/test/fixtures/specs/maxcols.json b/packages/istanbul-reports/test/fixtures/specs/maxcols.json
index b6e5cc5f..a8d0210a 100644
--- a/packages/istanbul-reports/test/fixtures/specs/maxcols.json
+++ b/packages/istanbul-reports/test/fixtures/specs/maxcols.json
@@ -1,7 +1,8 @@
 {
     "title": "maxCols - too much uncovered lines",
     "opts": {
-        "maxCols": 80
+        "maxCols": 80,
+        "projectRoot": "/"
     },
     "textReportExpected": "----------|---------|----------|---------|---------|----------------------------\nFile      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s          \n----------|---------|----------|---------|---------|----------------------------\n\u001b[31;1mAll files\u001b[0m | \u001b[31;1m     40\u001b[0m | \u001b[32;1m     100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[31;1m     40\u001b[0m | \u001b[31;1m                          \u001b[0m \n\u001b[31;1m index.js\u001b[0m | \u001b[31;1m     40\u001b[0m | \u001b[32;1m     100\u001b[0m | \u001b[32;1m    100\u001b[0m | \u001b[31;1m     40\u001b[0m | \u001b[31;1m...11,15,19,23,27,31,35,39\u001b[0m \n----------|---------|----------|---------|---------|----------------------------\n",
     "htmlSpaFiles": ["index.js.html", "index.html"],
@@ -84,6 +85,7 @@
             }
         ]
     },
+    "coberturaCoverageData": "<?xml version=\"1.0\" ?>\n<!DOCTYPE coverage SYSTEM \"http://cobertura.sourceforge.net/xml/coverage-04.dtd\">\n<coverage lines-valid=\"20\" lines-covered=\"8\" line-rate=\"0.4\" branches-valid=\"0\" branches-covered=\"0\" branch-rate=\"1\" timestamp=\"123456789\" complexity=\"0\" version=\"0.1\">\n  <sources>\n    <source>/</source>\n  </sources>\n  <packages>\n    <package name=\"main\" line-rate=\"0.4\" branch-rate=\"1\">\n      <classes>\n        <class name=\"index.js\" filename=\"index.js\" line-rate=\"0.4\" branch-rate=\"1\">\n          <methods>\n          </methods>\n          <lines>\n            <line number=\"1\" hits=\"0\" branch=\"false\"/>\n            <line number=\"2\" hits=\"0\" branch=\"false\"/>\n            <line number=\"3\" hits=\"0\" branch=\"false\"/>\n            <line number=\"4\" hits=\"0\" branch=\"false\"/>\n            <line number=\"5\" hits=\"1\" branch=\"false\"/>\n            <line number=\"11\" hits=\"0\" branch=\"false\"/>\n            <line number=\"13\" hits=\"1\" branch=\"false\"/>\n            <line number=\"15\" hits=\"0\" branch=\"false\"/>\n            <line number=\"17\" hits=\"1\" branch=\"false\"/>\n            <line number=\"19\" hits=\"0\" branch=\"false\"/>\n            <line number=\"21\" hits=\"1\" branch=\"false\"/>\n            <line number=\"23\" hits=\"0\" branch=\"false\"/>\n            <line number=\"25\" hits=\"1\" branch=\"false\"/>\n            <line number=\"27\" hits=\"0\" branch=\"false\"/>\n            <line number=\"29\" hits=\"1\" branch=\"false\"/>\n            <line number=\"31\" hits=\"0\" branch=\"false\"/>\n            <line number=\"33\" hits=\"1\" branch=\"false\"/>\n            <line number=\"35\" hits=\"0\" branch=\"false\"/>\n            <line number=\"37\" hits=\"1\" branch=\"false\"/>\n            <line number=\"39\" hits=\"0\" branch=\"false\"/>\n          </lines>\n        </class>\n      </classes>\n    </package>\n  </packages>\n</coverage>\n",
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diff --git a/packages/istanbul-reports/test/fixtures/specs/missing-line-missing-branch.json b/packages/istanbul-reports/test/fixtures/specs/missing-line-missing-branch.json
index f53b2fec..db2e18da 100644
--- a/packages/istanbul-reports/test/fixtures/specs/missing-line-missing-branch.json
+++ b/packages/istanbul-reports/test/fixtures/specs/missing-line-missing-branch.json
@@ -1,6 +1,10 @@
 {
     "title": "missing line and branch coverage",
     "textReportExpected": "----------|---------|----------|---------|---------|-------------------\nFile      | % Stmts | % Branch | % Funcs | % Lines | Uncovered Line #s \n----------|---------|----------|---------|---------|-------------------\n\u001b[32;1mAll files\u001b[0m | \u001b[32;1m  98.03\u001b[0m | \u001b[32;1m   95.34\u001b[0m | \u001b[32;1m  88.88\u001b[0m | \u001b[32;1m  97.87\u001b[0m | \u001b[31;1m                 \u001b[0m \n\u001b[32;1m index.js\u001b[0m | \u001b[32;1m  98.03\u001b[0m | \u001b[32;1m   95.34\u001b[0m | \u001b[32;1m  88.88\u001b[0m | \u001b[32;1m  97.87\u001b[0m | \u001b[31;1m9                \u001b[0m \n----------|---------|----------|---------|---------|-------------------\n",
+    "opts": {
+        "maxCols": 80,
+        "projectRoot": "/Users/benjamincoe/oss"
+    },
     "htmlSpaFiles": ["index.js.html", "index.html"],
     "htmlSpaCoverageData": {
         "file": "",
@@ -81,6 +85,7 @@
             }
         ]
     },
+    "coberturaCoverageData": "<?xml version=\"1.0\" ?>\n<!DOCTYPE coverage SYSTEM \"http://cobertura.sourceforge.net/xml/coverage-04.dtd\">\n<coverage lines-valid=\"47\" lines-covered=\"46\" line-rate=\"0.9787\" branches-valid=\"43\" branches-covered=\"41\" branch-rate=\"0.9534999999999999\" timestamp=\"123456789\" complexity=\"0\" version=\"0.1\">\n  <sources>\n    <source>/Users/benjamincoe/oss</source>\n  </sources>\n  <packages>\n    <package name=\"main\" line-rate=\"0.9787\" branch-rate=\"0.9534999999999999\">\n      <classes>\n        <class name=\"index.js\" filename=\"test-exclude/index.js\" line-rate=\"0.9787\" branch-rate=\"0.9534999999999999\">\n          <methods>\n            <method name=\"foo\" hits=\"0\" signature=\"()V\">\n              <lines>\n                <line number=\"8\" hits=\"0\"/>\n              </lines>\n            </method>\n            <method name=\"TestExclude\" hits=\"21\" signature=\"()V\">\n              <lines>\n                <line 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condition-coverage=\"75% (3/4)\"/>\n            <line number=\"22\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (2/2)\"/>\n            <line number=\"24\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (5/5)\"/>\n            <line number=\"25\" hits=\"7\" branch=\"false\"/>\n            <line number=\"28\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"29\" hits=\"15\" branch=\"true\" condition-coverage=\"50% (1/2)\"/>\n            <line number=\"32\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"33\" hits=\"5\" branch=\"false\"/>\n            <line number=\"35\" hits=\"16\" branch=\"false\"/>\n            <line number=\"38\" hits=\"21\" branch=\"true\" condition-coverage=\"100% (4/4)\"/>\n            <line number=\"39\" hits=\"5\" branch=\"false\"/>\n            <line number=\"42\" hits=\"21\" branch=\"false\"/>\n            <line number=\"50\" hits=\"1\" branch=\"false\"/>\n    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diff --git a/packages/istanbul-reports/test/html-spa/index.js b/packages/istanbul-reports/test/html-spa/index.js
index ca767c8c..a227f7ea 100644
--- a/packages/istanbul-reports/test/html-spa/index.js
+++ b/packages/istanbul-reports/test/html-spa/index.js
@@ -161,7 +161,7 @@ describe('html-spa', () => {
                 operations
                     .filter(op => op.type === 'write')
                     .map(op => path.join(op.baseDir, op.file)),
-                fixture.htmlSpaFiles
+                fixture.htmlSpaFiles.map(p => path.join(...[].concat(p)))
             );
 
             assert.deepEqual(