Add tests for interpolated outputReport filenames.

Author: deryni

test/fixtures/error-multi-one.js

@@ -0,0 +1,2 @@
+// Offset line by one
+var inone = stuff

test/fixtures/error-multi-two.js

@@ -0,0 +1,3 @@
+// Offset line by two
+// Offset line by two
+var intwo = stuff

test/fixtures/error-multi.js

@@ -0,0 +1,3 @@
+var one = require('./error-multi-one.js');
+var two = require('./error-multi-two.js');
+var foo = stuff

test/formatter.js

@@ -106,3 +106,58 @@ function(t) {
     t.end()
   })
 })
+
+test("eslint-loader can be configured to write eslint results for more than one file",
+function(t) {
+
+  var outputFilename = "outputReport-[name].txt"
+  var outputFilenamesArr = [
+    "outputReport-error-multi.txt",
+    "outputReport-error-multi-one.txt",
+    "outputReport-error-multi-two.txt"
+  ]
+
+  webpack(assign({},
+    conf,
+    {
+      entry: "./test/fixtures/error-multi.js",
+      eslint: assign({}, conf.eslint, {
+        formatter: require("eslint/lib/formatters/checkstyle"),
+        outputReport: {
+          filePath: outputFilename,
+        },
+      }),
+    }
+  ),
+  function(err, state) {
+    if (err) {
+      throw err
+    }
+
+    console.log("### Here is the output of the formatter")
+    console.log(
+      "# " +
+      stats.compilation.errors[0].message
+        .split("\n")
+        .join("\n# ")
+    )
+
+    for (var i = 0; i < outputFilenamesArr.length; i++) {
+      fs.readfile(conf.output.path + outputFilenamesArr[i],
+        "utf8", function(err, contents) {
+          if (err) {
+            t.fail("Expected file to have been created")
+          }
+          else {
+            t.pass("File '" + outputFilenamesArr[i] + "' has been created")
+
+            t.equal(stats.compilation.errors[i].message, contents,
+              "File Contents should equal output")
+          }
+        }
+      )
+    }
+
+    t.end()
+  })
+})