Responses to feedback, including making testStdinPipe helper log details of errors copying data to stdin.

Note: We cannot call t.Fatal from a non-test goroutine.

Author: SarahFrench

internal/command/command_test.go

@@ -657,7 +657,11 @@ func testStdinPipe(t *testing.T, src io.Reader) func() {
 	// Copy the data from the reader to the pipe
 	go func() {
 		defer w.Close()
-		io.Copy(w, src)
+		_, err := io.Copy(w, src)
+		if err != nil {
+			t.Logf("error when copying data from testStdinPipe reader argument to stdin: %s", err)
+			t.Fail()
+		}
 	}()
 
 	return func() {

internal/command/meta_backend.go

@@ -1862,7 +1862,7 @@ func (m *Meta) createDefaultWorkspace(c *configs.StateStore, b backend.Backend)
 	defaultSMgr, sDiags := b.StateMgr(backend.DefaultStateName)
 	diags = diags.Append(sDiags)
 	if sDiags.HasErrors() {
-		diags = diags.Append(fmt.Errorf("Failed to create a state manager for state store %q in  provider %s (%q). This is a bug in Terraform and should be reported: %w",
+		diags = diags.Append(fmt.Errorf("Failed to create a state manager for state store %q in provider %s (%q). This is a bug in Terraform and should be reported: %w",
 			c.Type,
 			c.Provider.Name,
 			c.ProviderAddr,