test: added the first test

I am not very good at unit testing but we need to start writing them

client/client_test.go

@@ -0,0 +1,52 @@
+package client_test
+
+import (
+	"testing"
+
+	"coopcloud.tech/abra/client"
+	dContext "github.com/docker/cli/cli/context"
+	dCliContextStore "github.com/docker/cli/cli/context/store"
+)
+
+type TestContext struct {
+	context           dCliContextStore.Metadata
+	expected_endpoint string
+}
+
+func dockerContext(host, key string) TestContext {
+	dockerContext := dCliContextStore.Metadata{
+		Name:     "foo",
+		Metadata: nil,
+		Endpoints: map[string]interface{}{
+			key: dContext.EndpointMetaBase{
+				Host:          host,
+				SkipTLSVerify: false,
+			},
+		},
+	}
+	return TestContext{
+		context:           dockerContext,
+		expected_endpoint: host,
+	}
+}
+
+func TestGetContextEndpoint(t *testing.T) {
+	var testDockerContexts = []TestContext{
+		dockerContext("ssh://foobar", "docker"),
+		dockerContext("ssh://foobar", "k8"),
+	}
+	for _, context := range testDockerContexts {
+		endpoint, err := client.GetContextEndpoint(context.context)
+		if err != nil {
+			if err.Error() != "context lacks Docker endpoint" {
+				t.Error(err)
+			}
+		} else {
+			if endpoint != context.expected_endpoint {
+				t.Errorf("did not get correct context endpoint. Expected: %s, received: %s", context.expected_endpoint, endpoint)
+			}
+		}
+
+	}
+
+}