Fix: Manage severity of 1 with TAP reporter (fixes #11110) (#11221)

When using TAP reporter, both messages with severity of 1 or 2 were listed as errors (`not ok`). This changes aims at reporting warnings as `ok` messages.

lib/formatters/tap.js

@@ -20,7 +20,6 @@ function getMessageType(message) {
         return "error";
     }
     return "warning";
-
 }
 
 /**
@@ -50,19 +49,23 @@ module.exports = function(results) {
         let diagnostics = {};
 
         if (messages.length > 0) {
-            testResult = "not ok";
-
             messages.forEach(message => {
+                const severity = getMessageType(message);
                 const diagnostic = {
                     message: message.message,
-                    severity: getMessageType(message),
+                    severity,
                     data: {
                         line: message.line || 0,
                         column: message.column || 0,
                         ruleId: message.ruleId || ""
                     }
                 };
 
+                // This ensures a warning message is not flagged as error
+                if (severity === "error") {
+                    testResult = "not ok";
+                }
+
                 /*
                  * If we have multiple messages place them under a messages key
                  * The first error will be logged as message key

tests/lib/formatters/tap.js

@@ -72,15 +72,78 @@ describe("formatter:tap", () => {
             }]
         }];
 
-        it("should return a an error string", () => {
+        it("should return an error string", () => {
             const result = formatter(code);
 
             assert.include(result, "not ok");
             assert.include(result, "error");
         });
     });
 
-    describe("when passed multiple messages", () => {
+    describe("when passed a message with a severity of 1", () => {
+        const code = [{
+            filePath: "foo.js",
+            messages: [{
+                message: "Unexpected foo.",
+                severity: 1,
+                line: 5,
+                column: 10,
+                ruleId: "foo"
+            }]
+        }];
+
+        it("should return a warning string", () => {
+            const result = formatter(code);
+
+            assert.include(result, "ok");
+            assert.notInclude(result, "not ok");
+            assert.include(result, "warning");
+        });
+    });
+
+    describe("when passed multiple messages with a severity of 1", () => {
+        const code = [{
+            filePath: "foo.js",
+            messages: [{
+                message: "Foo.",
+                severity: 1,
+                line: 5,
+                column: 10,
+                ruleId: "foo"
+            }, {
+                message: "Bar.",
+                severity: 1,
+                line: 6,
+                column: 11,
+                ruleId: "bar"
+            }, {
+                message: "Baz.",
+                severity: 1,
+                line: 7,
+                column: 12,
+                ruleId: "baz"
+            }]
+        }];
+
+        it("should return a string with multiple entries", () => {
+            const result = formatter(code);
+
+            assert.include(result, "ok");
+            assert.notInclude(result, "not ok");
+            assert.include(result, "messages");
+            assert.include(result, "Foo.");
+            assert.include(result, "line: 5");
+            assert.include(result, "column: 10");
+            assert.include(result, "Bar.");
+            assert.include(result, "line: 6");
+            assert.include(result, "column: 11");
+            assert.include(result, "Baz.");
+            assert.include(result, "line: 7");
+            assert.include(result, "column: 12");
+        });
+    });
+
+    describe("when passed multiple messages with different error severity", () => {
         const code = [{
             filePath: "foo.js",
             messages: [{
@@ -146,7 +209,8 @@ describe("formatter:tap", () => {
             const result = formatter(code);
 
             assert.include(result, "not ok 1");
-            assert.include(result, "not ok 2");
+            assert.include(result, "ok 2");
+            assert.notInclude(result, "not ok 2");
         });
     });