Split workspace-specific tests out of BlazeRuntimeTest

This creates a new class BlazeWorkspaceTest, and removes the initCommand method
from BlazeRuntime.

PiperOrigin-RevId: 158396032

src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java

diff --git a/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java b/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java
index 10812a4..f09843f 100644
--- a/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java
+++ b/src/main/java/com/google/devtools/build/lib/runtime/BlazeRuntime.java
@@ -194,7 +194,7 @@
     this.pathToUriConverter = pathToUriConverter;
   }
 
-  public void initWorkspace(BlazeDirectories directories, BinTools binTools)
+  public BlazeWorkspace initWorkspace(BlazeDirectories directories, BinTools binTools)
       throws AbruptExitException {
     Preconditions.checkState(this.workspace == null);
     WorkspaceBuilder builder = new WorkspaceBuilder(directories, binTools);
@@ -203,6 +203,7 @@
     }
     this.workspace = builder.build(
         this, packageFactory, ruleClassProvider, getProductName(), eventBusExceptionHandler);
+    return workspace;
   }
 
   @Nullable public CoverageReportActionFactory getCoverageReportActionFactory(
@@ -239,16 +240,6 @@
     }
   }
 
-  /**
-   * Initializes a CommandEnvironment to execute a command in this server.
-   *
-   * <p>This method should be called from the "main" thread on which the command will execute;
-   * that thread will receive interruptions if a module requests an early exit.
-   */
-  public CommandEnvironment initCommand() {
-    return workspace.initCommand();
-  }
-
   @Nullable
   public InvocationPolicy getModuleInvocationPolicy() {
     return moduleInvocationPolicy;