Fix erroring out when solution file is not passed in explicitly.

Solution file should have been optional. Also now throws when commands executed return non-0 exit result.

.gitignore

@@ -1 +1,2 @@
+.idea/
 .DS_Store

index.js

@@ -21,26 +21,25 @@ class Action {
         return spawnSync(TOOL, ARGS, options)
     }
 
-    _executeInProcess(cmd) {
-        this._executeCommand(cmd, { encoding: "utf-8", stdio: [process.stdin, process.stdout, process.stderr] })
+    _executeInProcess(cmd, errmsg) {
+        if (this._executeCommand(cmd, { encoding: "utf-8", stdio: [process.stdin, process.stdout, process.stderr] }).status > 0)
+        {
+            this._printErrorAndExit(errmsg)
+        }
     }
 
     run() {
-        if (!this.solutionFile || !fs.existsSync(this.solutionFile)) {
-            this._printErrorAndExit("solution file not found")
-        }
-
-        this._executeInProcess(`dotnet restore${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`)
-        this._executeInProcess(`dotnet build -c Release --no-restore${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`)
+        this._executeInProcess(`dotnet restore${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`, `restore failed`)
+        this._executeInProcess(`dotnet build -c Release --no-restore${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`, `build failed`)
         if (this.test) {
-            this._executeInProcess(`dotnet test -c Release --no-build --no-restore${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`)
+            this._executeInProcess(`dotnet test -c Release --no-build --no-restore${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`, `testing failed`)
         }
 
         if (this.pack) {
             console.log(`Note: To package symbol packages as well as normal packages specify these msbuild properties inside of the project's csproj file or to an Directory.Build.props file that is automatically imported by the .NET SDK:`)
             console.log(`https://docs.microsoft.com/en-us/nuget/create-packages/symbol-packages-snupkg#creating-a-symbol-package`)
             console.log(`setting these will be honored when calling dotnet pack and dotnet nugget push.`)
-            this._executeInProcess(`dotnet pack --no-build --no-restore -c Release${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`)
+            this._executeInProcess(`dotnet pack --no-build --no-restore -c Release${this.solutionFile === "" ? this.solutionFile : ` ${this.solutionFile}`}`, `packing failed`)
         }
     }
 }