test: add 14 Oils-inspired spec test files (244 tests)

crates/bashkit/tests/spec_cases/bash/alias.test.sh

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+# Alias tests
+# Inspired by Oils spec/alias.test.sh
+# https://github.com/oilshell/oil/blob/master/spec/alias.test.sh
+
+### alias_basic
+# Basic alias definition and use
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias hi='echo hello world'
+hi
+### expect
+hello world
+### end
+
+### alias_override_builtin
+# alias can override builtin
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias echo='echo foo'
+echo bar
+### expect
+foo bar
+### end
+
+### alias_define_multiple
+# defining multiple aliases
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias echo_x='echo X' echo_y='echo Y'
+echo_x
+echo_y
+### expect
+X
+Y
+### end
+
+### alias_unalias
+# unalias removes alias
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias hi='echo hello'
+hi
+unalias hi
+hi 2>/dev/null
+echo status=$?
+### expect
+hello
+status=127
+### end
+
+### alias_unalias_all
+# unalias -a removes all
+### skip: TODO alias expansion not implemented
+alias foo=bar
+alias spam=eggs
+unalias -a
+alias 2>/dev/null | wc -l
+### expect
+0
+### end
+
+### alias_not_defined_error
+# alias for non-existent returns error
+### skip: TODO alias expansion not implemented
+alias nonexistentZZZ 2>/dev/null
+echo status=$?
+### expect
+status=1
+### end
+
+### alias_unalias_not_defined_error
+# unalias for non-existent returns error
+### skip: TODO alias expansion not implemented
+unalias nonexistentZZZ 2>/dev/null
+echo status=$?
+### expect
+status=1
+### end
+
+### alias_with_variable
+# Alias with variable expansion at use-time
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+x=early
+alias echo_x='echo $x'
+x=late
+echo_x
+### expect
+late
+### end
+
+### alias_trailing_space
+# alias with trailing space triggers expansion of next word
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias hi='echo hello world '
+alias punct='!!!'
+hi punct
+### expect
+hello world !!!
+### end
+
+### alias_recursive_first_word
+# Recursive alias expansion of first word
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias hi='e_ hello world'
+alias e_='echo __'
+hi
+### expect
+__ hello world
+### end
+
+### alias_must_be_unquoted
+# Alias must be an unquoted word
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias echo_alias_='echo'
+cmd=echo_alias_
+echo_alias_ X
+$cmd X 2>/dev/null
+echo status=$?
+### expect
+X
+status=127
+### end
+
+### alias_in_pipeline
+# Two aliases in pipeline
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias myseq='seq '
+alias mywc='wc '
+myseq 3 | mywc -l
+### expect
+3
+### end
+
+### alias_used_in_subshell
+# alias used in subshell
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias echo_='echo [ '
+( echo_ subshell; )
+echo $(echo_ commandsub)
+### expect
+[ subshell
+[ commandsub
+### end
+
+### alias_with_semicolon_pipeline
+# Alias that is && || ;
+### skip: TODO alias expansion not implemented
+shopt -s expand_aliases
+alias t1='echo one && echo two'
+t1
+### expect
+one
+two
+### end
+
+### alias_list_all
+# alias without args lists all
+### skip: TODO alias expansion not implemented
+alias ex=exit ll='ls -l'
+alias | grep -c 'ex\|ll'
+### expect
+2
+### end

crates/bashkit/tests/spec_cases/bash/arith-dynamic.test.sh

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+# Dynamic arithmetic tests
+# Inspired by Oils spec/arith-dynamic.test.sh
+# https://github.com/oilshell/oil/blob/master/spec/arith-dynamic.test.sh
+
+### arith_dyn_var_reference
+# Variable references in arithmetic
+x='1'
+echo $(( x + 2 * 3 ))
+### expect
+7
+### end
+
+### arith_dyn_var_expression
+# Variable containing expression is re-evaluated
+### skip: TODO arithmetic variable re-evaluation of expressions not implemented
+x='1 + 2'
+echo $(( x * 3 ))
+### expect
+9
+### end
+
+### arith_dyn_substitution
+# $x in arithmetic
+x='1 + 2'
+echo $(( $x * 3 ))
+### expect
+7
+### end
+
+### arith_dyn_quoted_substitution
+# "$x" in arithmetic
+### skip: TODO double-quoted substitution in arithmetic not implemented
+x='1 + 2'
+echo $(( "$x" * 3 ))
+### expect
+7
+### end
+
+### arith_dyn_nested_var
+# Nested variable reference in arithmetic
+### skip: TODO recursive variable dereferencing in arithmetic not implemented
+a=3
+b=a
+echo $(( b + 1 ))
+### expect
+4
+### end
+
+### arith_dyn_array_index
+# Dynamic array index
+### skip: TODO array access in arithmetic expressions not implemented
+arr=(10 20 30 40)
+i=2
+echo $(( arr[i] ))
+### expect
+30
+### end
+
+### arith_dyn_array_index_expr
+# Expression as array index
+### skip: TODO array access in arithmetic expressions not implemented
+arr=(10 20 30 40)
+echo $(( arr[1+1] ))
+### expect
+30
+### end
+
+### arith_dyn_conditional
+# Ternary operator
+x=5
+echo $(( x > 3 ? 1 : 0 ))
+echo $(( x < 3 ? 1 : 0 ))
+### expect
+1
+0
+### end
+
+### arith_dyn_comma
+# Comma operator
+echo $(( 1, 2, 3 ))
+### expect
+3
+### end
+
+### arith_dyn_assign_in_expr
+# Assignment within arithmetic expression
+echo $(( x = 5 + 3 ))
+echo $x
+### expect
+8
+8
+### end
+
+### arith_dyn_pre_post_increment
+# Pre/post increment in dynamic context
+x=5
+echo $(( x++ ))
+echo $x
+echo $(( ++x ))
+echo $x
+### expect
+5
+6
+7
+7
+### end
+
+### arith_dyn_compound_assign
+# Compound assignment operators
+x=10
+echo $(( x += 5 ))
+echo $(( x -= 3 ))
+echo $(( x *= 2 ))
+echo $(( x /= 4 ))
+echo $(( x %= 2 ))
+### expect
+15
+12
+24
+6
+0
+### end
+
+### arith_dyn_unset_var_is_zero
+# Unset variable in arithmetic treated as 0
+unset arith_undef_xyz
+echo $(( arith_undef_xyz + 5 ))
+### expect
+5
+### end
+
+### arith_dyn_string_var_is_zero
+# Non-numeric string in arithmetic treated as 0
+x=hello
+echo $(( x + 5 ))
+### expect
+5
+### end

crates/bashkit/tests/spec_cases/bash/empty-bodies.test.sh

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+# Empty body tests
+# Inspired by Oils spec/empty-bodies.test.sh
+# https://github.com/oilshell/oil/blob/master/spec/empty-bodies.test.sh
+
+### empty_case_esac
+# Empty case/esac is valid
+case foo in
+esac
+echo empty
+### expect
+empty
+### end
+
+### empty_while_do_done
+# Empty while body - bash treats as parse error, bashkit allows it
+### skip: TODO empty while body not rejected as parse error
+bash -c 'while false; do
+done
+echo empty' 2>/dev/null
+echo status=$?
+### expect
+status=2
+### end
+
+### empty_if_then_fi
+# Empty then body - bash treats as parse error, bashkit allows it
+### skip: TODO empty if body not rejected as parse error
+bash -c 'if true; then
+fi
+echo empty' 2>/dev/null
+echo status=$?
+### expect
+status=2
+### end
+
+### empty_else_clause
+# Empty else clause - bash treats as parse error, bashkit allows it
+### skip: TODO empty else body not rejected as parse error
+bash -c 'if false; then echo yes; else
+fi' 2>/dev/null
+echo status=$?
+### expect
+status=2
+### end
+
+### empty_for_body
+# Empty for body - bash treats as parse error, bashkit allows it
+### skip: TODO empty for body not rejected as parse error
+bash -c 'for i in 1 2 3; do
+done' 2>/dev/null
+echo status=$?
+### expect
+status=2
+### end
+
+### empty_function_body
+# Empty function body - bash treats as parse error, bashkit allows it
+### skip: TODO empty function body not rejected as parse error
+bash -c 'f() { }' 2>/dev/null
+echo status=$?
+### expect
+status=2
+### end
+
+### case_with_empty_clause
+# case with empty clauses is valid
+case foo in
+  bar)
+    ;;
+  foo)
+    echo matched
+    ;;
+esac
+### expect
+matched
+### end
+
+### case_empty_fallthrough
+# case with empty clause and fallthrough
+case x in
+  x)
+    ;;
+  *)
+    echo no
+    ;;
+esac
+echo done
+### expect
+done
+### end