fix: add necessary envs (if has) to validate executable binary in the PATH (#137)

## Description
fix: add necessary envs (if has) to validate executable binary in the
PATH

**Related issue (if any):** amend the fix made in
#134

## Checklist

- [x] I have followed this repository's contributing guidelines.
- [x] I will adhere to the project's code of conduct.

## Additional information

Author: soul2zimate

src/main/java/com/redhat/exhort/providers/JavaScriptProvider.java

@@ -62,7 +62,7 @@ public abstract class JavaScriptProvider extends Provider {
 
   public JavaScriptProvider(Path manifest, Ecosystem.Type ecosystem, String cmd) {
     super(ecosystem, manifest);
-    this.cmd = Operations.getExecutable(cmd, "-v");
+    this.cmd = Operations.getExecutable(cmd, "-v", getExecEnv());
     try {
       this.manifest = new Manifest(manifest);
     } catch (IOException e) {

src/main/java/com/redhat/exhort/tools/Operations.java

@@ -242,10 +242,17 @@ public int getExitCode() {
    * @throws RuntimeException if the executable cannot be found, is not executable, or exits with an
    *     error code
    */
-  public static String getExecutable(String command, String args) {
+  public static String getExecutable(
+      String command, String args, final Map<String, String> envMap) {
     String cmdExecutable = Operations.getCustomPathOrElse(command);
     try {
-      Process process = new ProcessBuilder(cmdExecutable, args).redirectErrorStream(true).start();
+      ProcessBuilder processBuilder = new ProcessBuilder();
+      processBuilder.command(cmdExecutable, args);
+      if (envMap != null) {
+        processBuilder.environment().putAll(envMap);
+      }
+      Process process = processBuilder.start();
+
       int exitCode = process.waitFor();
       if (exitCode != 0) {
         throw new IOException(
@@ -265,4 +272,8 @@ public static String getExecutable(String command, String args) {
     }
     return cmdExecutable;
   }
+
+  public static String getExecutable(String command, String args) {
+    return getExecutable(command, args, null);
+  }
 }

src/test/java/com/redhat/exhort/providers/Javascript_Envs_Test.java

@@ -17,7 +17,11 @@
 
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNull;
+import static org.mockito.ArgumentMatchers.anyMap;
+import static org.mockito.ArgumentMatchers.anyString;
+import static org.mockito.Mockito.mockStatic;
 
+import com.redhat.exhort.tools.Operations;
 import com.redhat.exhort.utils.Environment;
 import java.io.File;
 import java.nio.file.Path;
@@ -37,18 +41,28 @@ public class Javascript_Envs_Test {
   @SetSystemProperty(key = "NODE_HOME", value = "test-node-home")
   @SetSystemProperty(key = "PATH", value = "test-path")
   void test_javascript_get_envs() {
-    var envs = new JavaScriptNpmProvider(MANIFEST_PATH).getExecEnv();
-    assertEquals(
-        Collections.singletonMap("PATH", "test-path" + File.pathSeparator + "test-node-home"),
-        envs);
+    try (MockedStatic<Operations> mockedOperations = mockStatic(Operations.class)) {
+      // Configure the mock to return "npm" when getExecutable is called
+      mockedOperations
+          .when(() -> Operations.getExecutable(anyString(), anyString(), anyMap()))
+          .thenReturn("npm");
+      var envs = new JavaScriptNpmProvider(MANIFEST_PATH).getExecEnv();
+      assertEquals(
+          Collections.singletonMap("PATH", "test-path" + File.pathSeparator + "test-node-home"),
+          envs);
+    }
   }
 
   @Test
   @SetSystemProperty(key = "NODE_HOME", value = "test-node-home")
   void test_javascript_get_envs_no_path() {
     try (MockedStatic<Environment> mockEnv =
-        Mockito.mockStatic(Environment.class, Mockito.CALLS_REAL_METHODS)) {
+            mockStatic(Environment.class, Mockito.CALLS_REAL_METHODS);
+        MockedStatic<Operations> mockOps = mockStatic(Operations.class)) {
       mockEnv.when(() -> Environment.get("PATH")).thenReturn(null);
+      mockOps
+          .when(() -> Operations.getExecutable(anyString(), anyString(), anyMap()))
+          .thenReturn("npm");
       var envs = new JavaScriptNpmProvider(MANIFEST_PATH).getExecEnv();
       assertEquals(Collections.singletonMap("PATH", "test-node-home"), envs);
     }