chore: import upstream snapshot with attribution

internal/llm/provider/opencode/opencode_test.go

@@ -0,0 +1,70 @@
+package opencode
+
+import (
+	"context"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+
+	"github.com/zzet/gortex/internal/llm"
+)
+
+func fakeBin(t *testing.T, stdout string) (bin, argsLog string) {
+	t.Helper()
+	if runtime.GOOS == "windows" {
+		t.Skip("fake-binary harness uses /bin/sh")
+	}
+	dir := t.TempDir()
+	bin = filepath.Join(dir, "fake-opencode.sh")
+	argsLog = filepath.Join(dir, "args.txt")
+	body := "#!/bin/sh\nprintf '%s\\n' \"$@\" > '" + argsLog + "'\ncat >/dev/null\nprintf '%s' '" + stdout + "'\n"
+	if err := os.WriteFile(bin, []byte(body), 0o755); err != nil {
+		t.Fatal(err)
+	}
+	return bin, argsLog
+}
+
+func TestNew_NotFound(t *testing.T) {
+	if _, err := New(llm.CLIConfig{Binary: "no-such-opencode-binary-xyz"}); err == nil {
+		t.Fatal("expected an error when the binary is missing")
+	}
+}
+
+func TestComplete_InvokesOpencodeRunWithPositionalPromptAndModel(t *testing.T) {
+	bin, argsLog := fakeBin(t, "from opencode")
+	p, err := New(llm.CLIConfig{Binary: bin, Model: "anthropic/claude-sonnet-4-6"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	if p.Name() != "opencode" {
+		t.Errorf("Name()=%q", p.Name())
+	}
+	if _, err := p.Complete(context.Background(), llm.CompletionRequest{
+		Messages: []llm.Message{{Role: llm.RoleUser, Content: "hi"}},
+	}); err != nil {
+		t.Fatal(err)
+	}
+	args := readLines(t, argsLog)
+	joined := strings.Join(args, "|")
+	if args[0] != "run" {
+		t.Errorf("expected `run` subcommand first, argv=%q", joined)
+	}
+	if !strings.Contains(joined, "--model|anthropic/claude-sonnet-4-6") {
+		t.Errorf("expected --model flag, argv=%q", joined)
+	}
+	// The prompt is the trailing positional argument.
+	if args[len(args)-1] != "User: hi" {
+		t.Errorf("expected prompt as the trailing positional, argv=%q", joined)
+	}
+}
+
+func readLines(t *testing.T, path string) []string {
+	t.Helper()
+	raw, err := os.ReadFile(path)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return strings.Split(strings.TrimRight(string(raw), "\n"), "\n")
+}