Adds basic tests.

test/test_common_functions.bats

@@ -0,0 +1,86 @@
+#!/usr/bin/env bats
+
+# test_common_functions.bats
+# Tests for the wild-common.sh library functions
+
+load 'test_helper'
+
+setup() {
+    setup_test_project "common-test"
+    cd "$TEST_PROJECT_DIR"
+}
+
+teardown() {
+    teardown_test_project "common-test"
+}
+
+@test "find_wc_home from project root" {
+    cd "$TEST_PROJECT_DIR"
+    WC_HOME_RESULT=$(find_wc_home)
+    assert_equal "$WC_HOME_RESULT" "$TEST_PROJECT_DIR"
+}
+
+@test "find_wc_home from nested subdirectory" {
+    mkdir -p "$TEST_PROJECT_DIR/deep/nested/path"
+    cd "$TEST_PROJECT_DIR/deep/nested/path"
+    WC_HOME_RESULT=$(find_wc_home)
+    assert_equal "$WC_HOME_RESULT" "$TEST_PROJECT_DIR"
+}
+
+@test "find_wc_home when no project found" {
+    cd /tmp
+    run find_wc_home
+    assert_failure
+}
+
+@test "init_wild_env sets WC_HOME correctly" {
+    mkdir -p "$TEST_PROJECT_DIR/deep/nested"
+    cd "$TEST_PROJECT_DIR/deep/nested"
+    unset WC_HOME WC_ROOT
+    init_wild_env
+    assert_equal "$WC_HOME" "$TEST_PROJECT_DIR"
+}
+
+@test "init_wild_env sets WC_ROOT correctly" {
+    cd "$TEST_PROJECT_DIR"
+    unset WC_HOME WC_ROOT
+    init_wild_env
+    # WC_ROOT is set (value depends on test execution context)
+    assert [ -n "$WC_ROOT" ]
+}
+
+@test "check_wild_directory passes when in project" {
+    cd "$TEST_PROJECT_DIR"
+    run check_wild_directory
+    assert_success
+}
+
+@test "print functions work correctly" {
+    cd "$TEST_PROJECT_DIR"
+    run bash -c '
+        source "$PROJECT_ROOT/bin/wild-common.sh"
+        print_header "Test Header"
+        print_info "Test info message"
+        print_warning "Test warning message"
+        print_success "Test success message"
+        print_error "Test error message"
+    '
+    assert_success
+    assert_output --partial "Test Header"
+    assert_output --partial "Test info message"
+}
+
+@test "command_exists works for existing command" {
+    run command_exists "bash"
+    assert_success
+}
+
+@test "command_exists fails for nonexistent command" {
+    run command_exists "nonexistent-command-xyz"
+    assert_failure
+}
+
+@test "generate_random_string produces correct length" {
+    RANDOM_STR=$(generate_random_string 16)
+    assert_equal "${#RANDOM_STR}" "16"
+}