factored couch_test_runner.js out from couch_tests.js, made it usuable for unit testing views from design docs

git-svn-id: https://svn.apache.org/repos/asf/incubator/couchdb/trunk@718409 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 181 insertions, 0 deletions

diff --git a/share/www/script/couch_test_runner.js b/share/www/script/couch_test_runner.js
new file mode 100644
index 00000000..59eafcde
--- /dev/null
+++ b/share/www/script/couch_test_runner.js
@@ -0,0 +1,181 @@
+// 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.
+
+// *********************** Test Framework of Sorts ************************* //
+
+function loadTests(url) {  
+  document.write('<script src="'+url+'"></script>');
+};
+
+function patchTest(fun) {
+  var source = fun.toString();
+  var output = "";
+  var i = 0;
+  var testMarker = "T("
+  while (i < source.length) {
+    var testStart = source.indexOf(testMarker, i);
+    if (testStart == -1) {
+      output = output + source.substring(i, source.length);
+      break;
+    }
+    var testEnd = source.indexOf(");", testStart);
+    var testCode = source.substring(testStart + testMarker.length, testEnd);
+    output += source.substring(i, testStart) + "T(" + testCode + "," + JSON.stringify(testCode);
+    i = testEnd;
+  }
+  try {
+    return eval("(" + output + ")");
+  } catch (e) {
+    return null;
+  }
+}
+
+function runAllTests() {
+  var rows = $("#tests tbody.content tr");
+  $("td", rows).html("&nbsp;");
+  $("td.status", rows).removeClass("error").removeClass("failure").removeClass("success").text("not run");
+  var offset = 0;
+  function runNext() {
+    if (offset < rows.length) {
+      var row = rows.get(offset);
+      runTest($("th button", row).get(0), function() {
+        offset += 1;
+        setTimeout(runNext, 1000);
+      });
+    }
+  }
+  runNext();
+}
+
+var numFailures = 0;
+var currentRow = null;
+
+function runTest(button, callback, debug) {
+  if (currentRow != null) {
+    alert("Can not run multiple tests simultaneously.");
+    return;
+  }
+  var row = currentRow = $(button).parents("tr").get(0);
+  $("td.status", row).removeClass("error").removeClass("failure").removeClass("success");
+  $("td", row).html("&nbsp;");
+  var testFun = tests[row.id];
+  function run() {
+    numFailures = 0;
+    var start = new Date().getTime();
+    try {
+      if (debug == undefined || !debug) {
+        testFun = patchTest(testFun) || testFun;
+      }
+      testFun(debug);
+      var status = numFailures > 0 ? "failure" : "success";
+    } catch (e) {
+      var status = "error";
+      if ($("td.details ol", row).length == 0) {
+        $("<ol></ol>").appendTo($("td.details", row));
+      }
+      $("<li><b>Exception raised:</b> <code class='error'></code></li>")
+        .find("code").text(JSON.stringify(e)).end()
+        .appendTo($("td.details ol", row));
+      if (debug) {
+        currentRow = null;
+        throw e;
+      }
+    }
+    if ($("td.details ol", row).length) {
+      $("<a href='#'>Run with debugger</a>").click(function() {
+        runTest(this, undefined, true);
+      }).prependTo($("td.details ol", row));
+    }
+    var duration = new Date().getTime() - start;
+    $("td.status", row).removeClass("running").addClass(status).text(status);
+    $("td.duration", row).text(duration + "ms");
+    updateTestsFooter();
+    currentRow = null;
+    if (callback) callback();
+  }
+  $("td.status", row).addClass("running").text("running…");
+  setTimeout(run, 100);
+}
+
+function showSource(cell) {
+  var name = $(cell).text();
+  var win = window.open("", name, "width=700,height=500,resizable=yes,scrollbars=yes");
+  win.document.title = name;
+  $("<pre></pre>").text(tests[name].toString()).appendTo(win.document.body).fadeIn();
+}
+
+function updateTestsListing() {
+  for (var name in tests) {
+    if (!tests.hasOwnProperty(name)) continue;
+    var testFunction = tests[name];
+    var row = $("<tr><th></th><td></td><td></td><td></td></tr>")
+      .find("th").text(name).attr("title", "Show source").click(function() {
+        showSource(this);
+      }).end()
+      .find("td:nth(0)").addClass("status").text("not run").end()
+      .find("td:nth(1)").addClass("duration").html("&nbsp;").end()
+      .find("td:nth(2)").addClass("details").html("&nbsp;").end();
+    $("<button type='button' class='run' title='Run test'></button>").click(function() {
+      this.blur();
+      runTest(this);
+      return false;
+    }).prependTo(row.find("th"));
+    row.attr("id", name).appendTo("#tests tbody.content");
+  }
+  $("#tests tr").removeClass("odd").filter(":odd").addClass("odd");
+  updateTestsFooter();
+}
+
+function updateTestsFooter() {
+  var tests = $("#tests tbody.content tr td.status");
+  var testsRun = tests.not(":contains('not run'))");
+  var testsFailed = testsRun.not(".success");
+  $("#tests tbody.footer td").text(testsRun.length + " of " + tests.length +
+    " test(s) run, " + testsFailed.length + " failures");
+}
+
+// Use T to perform a test that returns false on failure and if the test fails,
+// display the line that failed.
+// Example:
+// T(MyValue==1);
+function T(arg1, arg2) {
+  if (!arg1) {
+    if (currentRow) {
+      if ($("td.details ol", currentRow).length == 0) {
+        $("<ol></ol>").appendTo($("td.details", currentRow));
+      }
+      $("<li><b>Assertion failed:</b> <code class='failure'></code></li>")
+        .find("code").text((arg2 != null ? arg2 : arg1).toString()).end()
+        .appendTo($("td.details ol", currentRow));
+    }
+    numFailures += 1
+  }
+}
+
+function equals(a,b) {
+  if (a === b) return true;
+  try {
+    return repr(a) === repr(b);
+  } catch (e) {
+    return false;
+  }
+}
+
+function repr(val) {
+  if (val === undefined) {
+    return null;
+  } else if (val === null) {
+    return "null";
+  } else {
+    return JSON.stringify(val);
+  }
+}
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