allow --in-source-map inline (#1490)

- limited to one input file (or `stdin`)
- only works with built-in parser

fixes #520

test/mocha/minify.js

@@ -1,5 +1,6 @@
 var Uglify = require('../../');
 var assert = require("assert");
+var readFileSync = require("fs").readFileSync;
 
 describe("minify", function() {
     it("Should test basic sanity of minify with default options", function() {
@@ -75,6 +76,51 @@ describe("minify", function() {
             assert.equal(map.sourcesContent[0],
                 'let foo = x => "foo " + x;\nconsole.log(foo("bar"));');
         });
+        it("Should process inline source map", function() {
+            var code = Uglify.minify("./test/input/issue-520/input.js", {
+                inSourceMap: "inline",
+                sourceMapInline: true
+            }).code + "\n";
+            assert.strictEqual(code, readFileSync("test/input/issue-520/output.js", "utf8"));
+        });
+        it("Should warn for missing inline source map", function() {
+            var warn_function = Uglify.AST_Node.warn_function;
+            var warnings = [];
+            Uglify.AST_Node.warn_function = function(txt) {
+                warnings.push(txt);
+            };
+            try {
+                var result = Uglify.minify("./test/input/issue-1323/sample.js", {
+                    inSourceMap: "inline",
+                    mangle: false,
+                });
+                assert.strictEqual(result.code, "var bar=function(){function foo(bar){return bar}return foo}();");
+                assert.strictEqual(warnings.length, 1);
+                assert.strictEqual(warnings[0], "inline source map not found");
+            } finally {
+                Uglify.AST_Node.warn_function = warn_function;
+            }
+        });
+        it("Should fail with multiple input and inline source map", function() {
+            assert.throws(function() {
+                Uglify.minify([
+                    "./test/input/issue-520/input.js",
+                    "./test/input/issue-520/output.js"
+                ], {
+                    inSourceMap: "inline",
+                    sourceMapInline: true
+                });
+            }, "multiple input and inline source map");
+        });
+        it("Should fail with SpiderMonkey and inline source map", function() {
+            assert.throws(function() {
+                Uglify.minify("./test/input/issue-520/input.js", {
+                    inSourceMap: "inline",
+                    sourceMapInline: true,
+                    spidermonkey: true
+                });
+            }, "SpiderMonkey and inline source map");
+        });
     });
 
     describe("sourceMapInline", function() {