diff --git a/tests/testthat/test-plot.R b/tests/testthat/test-plot.R
new file mode 100644
index 0000000..6a6263f
--- /dev/null
+++ b/tests/testthat/test-plot.R
@@ -0,0 +1,20 @@
+
+
+exper <- demo_joy() |>
+    mediation_data("PHQ", "treatment", starts_with("ASV"))
+ie <- multimedia(exper) |>
+    estimate(exper) |>
+    indirect_pathwise() |>
+    effect_summary()
+
+test_that("Plot mediators returns on standard pathwise output.", {
+  g <- plot_mediators(ie, exper)
+  expect_s3_class(g, "patchwork")
+})
+
+test_that("Can customize number of digits in plot_mediators output.", {
+  g <- plot_mediators(ie, exper, n_digit = 1)
+  expect_s3_class(g, "patchwork")
+  g <- plot_mediators(ie, exper, n_digit = 3)
+  expect_s3_class(g, "patchwork")
+})
\ No newline at end of file
diff --git a/tests/testthat/test-print.R b/tests/testthat/test-print.R
new file mode 100644
index 0000000..ef3a604
--- /dev/null
+++ b/tests/testthat/test-print.R
@@ -0,0 +1,28 @@
+
+test_that("ANSI handler converts R code to HTML tagged version", {
+    output <- ansi_aware_handler("test")
+    expect_equal(output, "<pre class=\"r-output\"><code>test</code></pre>")
+})
+
+test_that("Show methods give expected output for mediation data object.", {
+    exper <- mediation_data(demo_joy(), "PHQ", "treatment", starts_with("ASV"))
+    expect_output(print(exper), "\\[Mediation Data\\]")
+    expect_output(print(exper), "100 samples with measurements for,")
+})
+
+test_that("vec_sub correctly truncates long outputs", {
+    expect_equal(multimedia:::vec_sub(LETTERS[1:10]), "A, B, ...")
+    expect_equal(multimedia:::vec_sub(1:10), "1, 2, ...")
+})
+
+test_that("Show methods give expected output for a fitted multimedia object.", {
+    exper <- mediation_data(demo_joy(), "PHQ", "treatment", starts_with("ASV"))
+    model <- multimedia(exper) |>
+        estimate(exper)
+    expect_output(print(model), "\\[Multimedia Analysis\\]")
+    expect_output(print(model), "Treatments: treatment")
+    expect_output(print(model), "Mediators: ASV1, ASV2, ...")
+    expect_output(print(model), "\\[Models\\]")
+    expect_output(print(model), "mediation: A fitted")
+    expect_output(print(model), "outcome: A fitted")
+})
\ No newline at end of file